What if

GROUP BUILDS => THE RE-ENGINE IT GB => Topic started by: zenrat on August 05, 2023, 03:20:57 AM

Title: Airco DH2. Finished Pics Pg 10.
Post by: zenrat on August 05, 2023, 03:20:57 AM
Biggles wandered into the back of the hanger and stopped short with amazement.
  "Bertie!" he exclaimed "by the anti clockwise propeller of my sainted aunt, what the deuce has The Professor done to this poor old DH2?"
  "Well old chap" Bertie replied adjusting his monocle "he's jolly well gone and fitted it with what he calls a 'jet' engine.  Says it's going the be the coming thing and pretty soon every bally kite will be flying around looking like its tails on fire".
  "Hah!  That'll be the day.  I'm sure this'll just be another flash in the pan.  That's if it even works at all.  Shall we take it up?  Come on, give me a hand pushing it out.  I don't suppose you know how to start it do you?"
  "I suppose we just light the blue touch paper.  Here, take my lighter..."

The starting point.  A bagged Revell 1/72 DH2 and an almost built A&A Klimov VK-1

(https://live.staticflickr.com/65535/53060942736_bf8482efcd_b.jpg) (https://flic.kr/p/2oQPcEh)Airco DH2 + Klimov VK-1 (https://flic.kr/p/2oQPcEh) by Fred Maillardet (https://www.flickr.com/photos/156376527@N06/), on Flickr

And here is todays progress.  You can see that the engine is in three large parts - not completely built.

(https://live.staticflickr.com/65535/53095173438_28a50ebe92_b.jpg) (https://flic.kr/p/2oTQDfN)DH2 Jet WIP 05-08-2023 (https://flic.kr/p/2oTQDfN) by Fred Maillardet (https://www.flickr.com/photos/156376527@N06/), on Flickr

First issue is engine positioning.  In order to retain a CoG roughly similar to that with the original rotary engine I shall have to make room by removing the rear portion of the fuselage nacelle.
The rudder will also be an issue being directly in line with the jet exhaust.

Title: Re: Airco DH2.
Post by: PR19_Kit on August 05, 2023, 04:50:23 AM
Quote from: zenrat on August 05, 2023, 03:20:57 AMThe rudder will also be an issue being directly in line with the jet exhaust.


It won't be for very long.................  ;D
Title: Re: Airco DH2.
Post by: Old Wombat on August 05, 2023, 05:43:29 AM
Reckon I have a pretty good idea of where you got Klimov's Nene. ;)  :thumbsup:

I thought the original use was the waste of a good engine, too. Mine's floating around in the spare parts, somewhere. ;D
Title: Re: Airco DH2.
Post by: NARSES2 on August 05, 2023, 06:33:46 AM
 ;D  ;D
Title: Re: Airco DH2.
Post by: Rheged on August 05, 2023, 06:43:54 AM
Unusual, most creative but not totally unexpected;  this being whiffworld!   

 Can we expect  "Biggles Baffles the Boche" (1915) "Biggles Bewilders the Bolsheviks" (1919)  or possibly  just  "Biggles Flies Apart"  as a result of this creation?
Title: Re: Airco DH2.
Post by: PR19_Kit on August 05, 2023, 06:45:47 AM
Possibly "Biggles goes into Orbit"?
Title: Re: Airco DH2.
Post by: Wardukw on August 05, 2023, 02:05:38 PM
Holy crap Fred ..this will be the fastest DH2 ever built..admittedly not for very long but I love this  ;D  :wacko:  :wacko:
Title: Re: Airco DH2.
Post by: zenrat on August 05, 2023, 10:28:57 PM
Biggles Burns Up?

You are correct Womby.  No way I was hiding such a nicely detailed little gem inside that fuselage.
Trouble is the DH2 doesn't do it justice being fairly crude (and having ejector pin marks everywhere including on the wing undersides).
I'm hoping adding detail and rigging will help.

Title: Re: Airco DH2.
Post by: NARSES2 on August 06, 2023, 01:27:26 AM
Quote from: zenrat on August 05, 2023, 10:28:57 PMBiggles Burns Up?


Biggles Last Flight ?
Title: Re: Airco DH2.
Post by: zenrat on August 06, 2023, 04:12:45 AM
Today I cut down the cockpit nacelle and painted the engine silver (as a base coat for various metalisers).

Cockpit detail is completely non-existent so I need to find a suitable seat (whicker not bang) and instrument panel.

Title: Re: Airco DH2.
Post by: jcf on August 06, 2023, 10:25:44 AM
Are you going to add a few more instruments to the panel? :wacko:

DEHAVILLAND_2_COCKPIT.JPG
Title: Re: Airco DH2.
Post by: perttime on August 06, 2023, 11:31:18 AM
Apparently, there were at least 3 ways to put a fuel tank on a DH.2. Which one are you going to pick - or all of them?
Title: Re: Airco DH2.
Post by: loupgarou on August 06, 2023, 12:33:27 PM
Quote from: perttime on August 06, 2023, 11:31:18 AMApparently, there were at least 3 ways to put a fuel tank on a DH.2. Which one are you going to pick - or all of them?

With a jet engine, maybe all 3 will be necessary.
I am curious about where the air intake will go, and hope for Biggles safety that the wing structure had been suitably reinforced...
Title: Re: Airco DH2.
Post by: Wardukw on August 06, 2023, 12:34:14 PM
Quote from: perttime on August 06, 2023, 11:31:18 AMApparently, there were at least 3 ways to put a fuel tank on a DH.2. Which one are you going to pick - or all of them?
Jet powered..all three I think  ;D
Maybe even more.
Title: Re: Airco DH2.
Post by: frank2056 on August 06, 2023, 07:26:20 PM
Compared to the Opel Rak.1 (https://en.wikipedia.org/wiki/Opel_RAK.1), this DH.2 sounds like a rational design.
Title: Re: Airco DH2.
Post by: zenrat on August 07, 2023, 05:00:15 AM
Not many instruments there.  I may add a Machmeter...  ;)

I haven't thought as far ahead as the fuel tank(s).  But they'll be gravity fed obviously.  :mellow:

Engine will be uncowled (why hide all that detail) so there will not be an intake in the conventional sense.  The centrifugal compressor will draw air in through the inlets like those seen here (mesh covered) on this Rolls Royce copy of the original Soviet Klimov design.
(https://upload.wikimedia.org/wikipedia/commons/8/84/Rolls_Royce_Nene.jpg)
Not sure how powerful the "suck" would be but Biggles might like to ensure he is strapped in.
Title: Re: Airco DH2.
Post by: mexchiwa on August 07, 2023, 07:48:57 AM
Next re-engine a Vampire with a Gnome-Rhône
Title: Re: Airco DH2.
Post by: Dizzyfugu on August 07, 2023, 10:57:53 AM
 ;D

(https://live.staticflickr.com/65535/49713045952_52c8df6947_c.jpg) (https://flic.kr/p/2iJYmzW)
1:72 Yokosuka Naval Air Technical Arsenal J1Y3 "アカエイ" (Allied reporting name "Ron"); aircraft "(210-)20" of the 210th Kokutai, Imperial Japanese Navy Air Service (IJN); Kokubu airfield (Japan), April 1945 (Whif/converted Heller D.H. Vampire kit) (https://flic.kr/p/2iJYmzW) by Dizzyfugu (https://www.flickr.com/photos/dizzyfugu/), on Flickr
Title: Re: Airco DH2.
Post by: PR19_Kit on August 07, 2023, 10:59:35 AM
 :thumbsup:  :thumbsup:  :thumbsup:  :thumbsup:  :thumbsup:  :thumbsup:

Needs the cowling stripped back though.
Title: Re: Airco DH2.
Post by: jcf on August 07, 2023, 04:24:33 PM
Quote from: zenrat on August 07, 2023, 05:00:15 AMNot many instruments there.  I may add a Machmeter...  ;)

I haven't thought as far ahead as the fuel tank(s).  But they'll be gravity fed obviously.  :mellow:

Engine will be uncowled (why hide all that detail) so there will not be an intake in the conventional sense.  The centrifugal compressor will draw air in through the inlets like those seen here (mesh covered) on this Rolls Royce copy of the original Soviet Klimov design.
(https://upload.wikimedia.org/wikipedia/commons/8/84/Rolls_Royce_Nene.jpg)
Not sure how powerful the "suck" would be but Biggles might like to ensure he is strapped in.

;D ;D

The funny thing about the Nene - VK-1 thing is that Klimov was well into the design process before an example
of the Nene had arrived in the Soviet Union or he had actually seen one. Klimov based the design on information,
including a general arrangement drawing, published in aviation journals he used the general layout of the Nene
and enlarged it slightly - primarily to compensate for known and potential materials issues, but it wasn't really a
direct copy of the R-R engine. Somewhat amusingly, the first examples of the VK-1 were undergoing tests before
the first RD-45 was ready, which was a direct copy. 

Less than 10% of the parts were interchangeable between the VK-1 and the RD-45, those that were interchangeable
were primarily standardized things like electrical and plumbing connectors, fasteners etc., many of the basic parts that
are even interchangeable with a piston engine.
Title: Re: Airco DH2.
Post by: RAFF-35 on August 08, 2023, 12:18:23 AM
I love this idea! Is the tail going to be made from metal or is it going to be a twin boomer?
Title: Re: Airco DH2.
Post by: zenrat on August 08, 2023, 02:56:32 AM
Good question.
I will retain a single rudder but relocate it above the horizontal tail elements.  The jet efflux will pass below this through the open end of the tail framework.  Some of which will be made of metal.

Title: Re: Airco DH2.
Post by: jcf on August 08, 2023, 09:49:08 AM
Something like the engine/propeller fairing/rear fuselage of the Vickers Type 161?

161_COW_01.jpg

TYPE_161_COW_01.png



Title: Re: Airco DH2.
Post by: Wardukw on August 08, 2023, 10:17:24 AM
Jon that's a cool looking plane ..they tried their  best to stream line it it seems.
Title: Re: Airco DH2.
Post by: zenrat on August 09, 2023, 04:16:08 AM
Quote from: jcf on August 08, 2023, 09:49:08 AMSomething like the engine/propeller fairing/rear fuselage of the Vickers Type 161?...

Ummmmm, no.  Not really.
But I do like the COW gun.
Title: Re: Airco DH2.
Post by: NARSES2 on August 09, 2023, 05:57:19 AM
I've always liked the look of the 161, but the position of that roundel gives it a cartoonish air  ;D

I think the COW gun, did anyone call the RSPCA ?  :angel: , was used on a couple of flying boats as an anti U-Boat weapon, but it wasn't up to much. It was developed into the "S" gun though. It does look good though  :thumbsup:
Title: Re: Airco DH2.
Post by: jcf on August 09, 2023, 07:07:15 AM
Quote from: zenrat on August 09, 2023, 04:16:08 AM
Quote from: jcf on August 08, 2023, 09:49:08 AMSomething like the engine/propeller fairing/rear fuselage of the Vickers Type 161?...

Ummmmm, no.  Not really.
But I do like the COW gun.
I meant the jetpipe running in a similar fashion to the empennage in terms of appearance.
Title: Re: Airco DH2.
Post by: PR19_Kit on August 09, 2023, 08:07:53 AM
Was that some sort of Shrage Musik installation, meant to fire upwards into the enemy bombers/Zeppelins?
Title: Re: Airco DH2.
Post by: NARSES2 on August 09, 2023, 08:18:33 AM
Quote from: PR19_Kit on August 09, 2023, 08:07:53 AMWas that some sort of Shrage Musik installation, meant to fire upwards into the enemy bombers/Zeppelins?

Similar yup.
Title: Re: Airco DH2.
Post by: jcf on August 09, 2023, 10:53:33 AM
Quote from: PR19_Kit on August 09, 2023, 08:07:53 AMWas that some sort of Shrage Musik installation, meant to fire upwards into the enemy bombers/Zeppelins?
Primarily bombers rather than airships, as by the time 161 and its more convention Westland counterpart were designed and flew, 1931 and 1930 respectively, the airship was no longer considered as a realistic offensive weapon.
Title: Re: Airco DH2.
Post by: zenrat on August 10, 2023, 04:32:44 AM
Quote from: jcf on August 09, 2023, 07:07:15 AM
Quote from: zenrat on August 09, 2023, 04:16:08 AM
Quote from: jcf on August 08, 2023, 09:49:08 AMSomething like the engine/propeller fairing/rear fuselage of the Vickers Type 161?...

Ummmmm, no.  Not really.
But I do like the COW gun.
I meant the jetpipe running in a similar fashion to the empennage in terms of appearance.

I got that.  The jet pipe from the donor kit is short but has detail moulded into the surface which I want to keep.  It'll end at a point not far behind the trailing edge and the burning hot gases will then mostly pass through a space under the stabiliser and between the ends of the booms - hopefully not charring too much on its way.
Title: Re: Airco DH2.
Post by: PR19_Kit on August 10, 2023, 04:34:52 AM
I like the 'hopefully' bit................

I expect Biggles does too!
Title: Re: Airco DH2.
Post by: zenrat on August 10, 2023, 05:12:10 AM
Detail painting on the engine today which needs to be done before it can be assembled completely which needs to be done before I can organise mountings etc.
Title: Re: Airco DH2.
Post by: Wardukw on August 10, 2023, 11:56:38 AM
This is sounding better and better even you post something Fred . ;D  ;D
Title: Re: Airco DH2.
Post by: zenrat on August 12, 2023, 05:40:30 AM
Engine is in one piece.
Now I need to figure out some mounts.
Title: Re: Airco DH2.
Post by: Rheged on August 12, 2023, 05:50:54 AM
Quote from: zenrat on August 12, 2023, 05:40:30 AMEngine is in one piece.
Now I need to figure out some mounts.


Exceptionally strong, fireproof, string?
Title: Re: Airco DH2.
Post by: Wardukw on August 12, 2023, 12:40:08 PM
Quote from: zenrat on August 12, 2023, 05:40:30 AMEngine is in one piece.
Now I need to figure out some mounts.

Square made of tube with 8 more tubes..2 at each corner to mount to the fuselage.
Title: Re: Airco DH2.
Post by: zenrat on August 13, 2023, 05:17:48 AM
I was thinking gaffer tape and occy straps... ;)
Title: Re: Airco DH2.
Post by: Wardukw on August 13, 2023, 11:25:12 AM
Quote from: zenrat on August 13, 2023, 05:17:48 AMI was thinking gaffer tape and occy straps... ;)
It's a shame cable ties weren't invented yet 😊
Title: Re: Airco DH2.
Post by: scooter on August 13, 2023, 12:06:07 PM
(https://images-wixmp-ed30a86b8c4ca887773594c2.wixmp.com/f/090f15e1-f6d1-4d5d-9c73-007d0c9695c6/dg5gveg-864417ba-b1f1-4b6f-aa89-405e56b4a435.png/v1/fit/w_828,h_586,q_70,strp/airco_dh_2_by_aoiwaffle0608_dg5gveg-414w-2x.jpg?token=eyJ0eXAiOiJKV1QiLCJhbGciOiJIUzI1NiJ9.eyJzdWIiOiJ1cm46YXBwOjdlMGQxODg5ODIyNjQzNzNhNWYwZDQxNWVhMGQyNmUwIiwiaXNzIjoidXJuOmFwcDo3ZTBkMTg4OTgyMjY0MzczYTVmMGQ0MTVlYTBkMjZlMCIsIm9iaiI6W1t7ImhlaWdodCI6Ijw9Mjg5NCIsInBhdGgiOiJcL2ZcLzA5MGYxNWUxLWY2ZDEtNGQ1ZC05YzczLTAwN2QwYzk2OTVjNlwvZGc1Z3ZlZy04NjQ0MTdiYS1iMWYxLTRiNmYtYWE4OS00MDVlNTZiNGE0MzUucG5nIiwid2lkdGgiOiI8PTQwOTMifV1dLCJhdWQiOlsidXJuOnNlcnZpY2U6aW1hZ2Uub3BlcmF0aW9ucyJdfQ.yZnmpPWMb91RQwG4Q4dDJqj_DPs6LiC-ylPm3U0wc8Y)
>>LINK<<! (https://www.deviantart.com/aoiwaffle0608/art/Airco-DH-2-976644088)

Also
(https://images-wixmp-ed30a86b8c4ca887773594c2.wixmp.com/f/090f15e1-f6d1-4d5d-9c73-007d0c9695c6/dg5gvtb-10d91073-5c6d-4965-9fcb-1a66a0b94c84.png/v1/fit/w_828,h_586,q_70,strp/airco_dh_2_full_body_version_by_aoiwaffle0608_dg5gvtb-414w-2x.jpg?token=eyJ0eXAiOiJKV1QiLCJhbGciOiJIUzI1NiJ9.eyJzdWIiOiJ1cm46YXBwOjdlMGQxODg5ODIyNjQzNzNhNWYwZDQxNWVhMGQyNmUwIiwiaXNzIjoidXJuOmFwcDo3ZTBkMTg4OTgyMjY0MzczYTVmMGQ0MTVlYTBkMjZlMCIsIm9iaiI6W1t7ImhlaWdodCI6Ijw9Mjg5NCIsInBhdGgiOiJcL2ZcLzA5MGYxNWUxLWY2ZDEtNGQ1ZC05YzczLTAwN2QwYzk2OTVjNlwvZGc1Z3Z0Yi0xMGQ5MTA3My01YzZkLTQ5NjUtOWZjYi0xYTY2YTBiOTRjODQucG5nIiwid2lkdGgiOiI8PTQwOTMifV1dLCJhdWQiOlsidXJuOnNlcnZpY2U6aW1hZ2Uub3BlcmF0aW9ucyJdfQ.cMneiHeY_g2OCWIu97ov5fQvuxc_Bu-0uvYpLlxWlj8)
>>>LINK!<<< (https://www.deviantart.com/aoiwaffle0608/art/Airco-DH-2-full-body-version-976644623)


Artist notes:
One of my favorite fighter in WW1
I draw this for my friend's project, which is about drawing weapon girls like other games but only from WW1, because no one does! what a nice concept, isn't it?
Title: Re: Airco DH2.
Post by: zenrat on August 14, 2023, 04:34:05 AM
 :thumbsup:
Title: Re: Airco DH2.
Post by: zenrat on August 18, 2023, 04:36:54 AM
Progress.
Engine is together and had been offered up the the rear of the cutdown fuselage nacelle.
This has allowed me to plot the way ahead.
I will need to construct a jig to hold the upper and lower wings in the correct position relative to each other while the 8 individual interplane struts glue dries.
Today I also removed ejector pin marks from under both upper and lower wings.  This also removed the moulded on fabric pattern (not necessarily a bad thing as it is very coarse).
I can see why this kit has a bad reputation.
Does anyone do a decent 1/72 DH.2?
Title: Re: Airco DH2.
Post by: NARSES2 on August 18, 2023, 05:59:49 AM
Eduard did one, which you can probably pick up on line, but even that's one of their first kits and nearly 20 years old.  Other than that Pegasus did one, but that comes with the normal Pegasus baggage.
Title: Re: Airco DH2.
Post by: jcf on August 18, 2023, 11:24:09 AM
Quote from: NARSES2 on August 18, 2023, 05:59:49 AMEduard did one, which you can probably pick up on line, but even that's one of their first kits and nearly 20 years old.  Other than that Pegasus did one, but that comes with the normal Pegasus baggage.
Pigasus would be more appropriate for some of those kits. 
;D :wacko:
Title: Re: Airco DH2.
Post by: zenrat on August 19, 2023, 03:47:48 AM
Thanks.  I might look out for an Eduard one. 

Built jigs and attached the upper wing to the lower today.  Only Interplane Struts were glued.
My original jig design would have held the wings in alignment very rigidly and would have been impossible to remove once the glue had dried.
Luckilly I realised this BEFORE I spent too much time building it.

(https://live.staticflickr.com/65535/53126738951_64d4fe68b1_z.jpg) (https://flic.kr/p/2oWCqzM)DH2 Jet WIP 19-08-2023 (https://flic.kr/p/2oWCqzM) by Fred Maillardet (https://www.flickr.com/photos/156376527@N06/), on Flickr

Now this is done the plan is to construct an engine mounting frame which includes cabane struts and which will slide perfectly into place between the wings behind the nacelle.
Of course, we all know the old saying about plans and their survival...

I'm pondering some sort of Dieselpunk (or is it Keropunk?) 'chute powered ejector seat.
Title: Re: Airco DH2.
Post by: NARSES2 on August 19, 2023, 04:59:35 AM
Impressed with your work sir, I can vaguely remember just how fiddly that was  :unsure:

Quote from: zenrat on August 19, 2023, 03:47:48 AMI'm pondering some sort of Dieselpunk (or is it Keropunk?) 'chute powered ejector seat.


All RFC/RAF got parachutes or just James Bigglesworth esq. ?  :angel:
Title: Re: Airco DH2.
Post by: zenrat on August 19, 2023, 05:09:25 AM
Well this is The Professor's prototype, so just this one.
I'm thinking about a seat mounted to rails attached to the upper wing.  A packed chute is mounted on the upper wing which when opened drags the seat out of the nacelle up the rails and away.
Title: Re: Airco DH2.
Post by: scooter on August 19, 2023, 05:38:03 AM
Quote from: zenrat on August 19, 2023, 05:09:25 AMI'm thinking about a seat mounted to rails attached to the upper wing.  A packed chute is mounted on the upper wing which when opened drags the seat out of the nacelle up the rails and away.


An elegantly Kerbal Space Program-esque solution.

But will the parachute pack say ACME?
Title: Re: Airco DH2.
Post by: PR19_Kit on August 19, 2023, 05:59:05 AM
I can't help thinking that some hefty elastic bands should be involved somewhere................  ;D
Title: Re: Airco DH2.
Post by: zenrat on August 19, 2023, 06:44:04 AM
Quote from: scooter on August 19, 2023, 05:38:03 AM
Quote from: zenrat on August 19, 2023, 05:09:25 AMI'm thinking about a seat mounted to rails attached to the upper wing.  A packed chute is mounted on the upper wing which when opened drags the seat out of the nacelle up the rails and away.


An elegantly Kerbal Space Program-esque solution.

But will the parachute pack say ACME?

It will now.  :thumbsup:
Title: Re: Airco DH2.
Post by: Old Wombat on August 19, 2023, 07:59:23 AM
I'm assuming the parachute will be a re-purposed 'chute from an observation dirigible? :unsure:
Title: Re: Airco DH2.
Post by: Rheged on August 19, 2023, 09:57:00 AM
Quote from: PR19_Kit on August 19, 2023, 05:59:05 AMI can't help thinking that some hefty elastic bands should be involved somewhere................  ;D

Right again, Kit! A very early collaboration between Messers Martin and Baker.    The M&B spring-loaded elastic whoopee cushion!  The prototype model was constructed, or so it is believed, from Valentine Baker's grandfather's "Everite" braces (one source claims that the elastic from Baker's grandmother's underwear was used)  and a  large second hand bedspring  from a redundant mattress..

When the ejector pin was withdrawn, the combined power of the compressed spring and elastic in tension hurled the intrepid aviator  violently upwards  along the seat rails, over the upper wing  and out to the left (thus avoiding the  propellor  of the DH2)  whilst a further  long elastic band pulled the ripcord  on the parachute pack when the ejected individual was a reasonable distance from the stricken machine.  Manufacture was sub-contracted to the Aeroplane  Construction and Maintenance Establishment at Farnborough...............hence the letters A C M E  stencilled on every installation.  Pilots were told that if the aeroplane was in terminal difficulties,  "pull the pin and twang out to safety"

Other members of the group will (I hope) add further information on this unique piece of kit.
Title: Re: Airco DH2.
Post by: PR19_Kit on August 19, 2023, 02:48:51 PM
 ;D  ;D  ;D  ;D  ;D
Title: Re: Airco DH2.
Post by: buzzbomb on August 19, 2023, 05:29:08 PM
Sounds a bit like the mechanism in Billy Connolly's Jobbie Weecha  ;D
Title: Re: Airco DH2.
Post by: zenrat on August 20, 2023, 03:52:58 AM
Hmmm, yes.
Very good technical description Rheged.
:thumbsup:

Having removed the jigs and offered up the engine I realised the main mounting point for it could be a pin fitted between a hole drilled in the back of the engine and the original rotary motors boss which is moulded on the back of the firewall.  This means that the engine subframe doesn't have to actually mount the engine securely, just look like it does.
This is a good thing.

(https://live.staticflickr.com/65535/53129227739_d657f14ff8_z.jpg) (https://flic.kr/p/2oWRbpV)DH2 Jet WIP  20-08-2023 (https://flic.kr/p/2oWRbpV) by Fred Maillardet (https://www.flickr.com/photos/156376527@N06/), on Flickr
Title: Re: Airco DH2.
Post by: NARSES2 on August 20, 2023, 06:05:08 AM
Can I ask where the jet's air intake is ? Or does it come in between the pilots legs ? Curry night in  the Mess Thursday's ?  :angel:
Title: Re: Airco DH2.
Post by: perttime on August 20, 2023, 08:38:26 AM
No rockets involved in the ejection system?

wiley.jpg
Title: Re: Airco DH2.
Post by: Wardukw on August 20, 2023, 10:48:46 AM
With out your hand there in the pics mate I had no real idea just how small this is ...it's small!!!
Even more qudos to ya for the size Fred  :thumbsup:  :thumbsup:
It's looking pretty good so far to ..by the way  ;)
Title: Re: Airco DH2.
Post by: Old Wombat on August 21, 2023, 02:28:07 AM
Quote from: NARSES2 on August 20, 2023, 06:05:08 AMCan I ask where the jet's air intake is ? Or does it come in between the pilots legs ? Curry night in  the Mess Thursday's ?  :angel:

The ring just forward of the wing strut, with lots of "V" shaped supports & simulated mesh, is where the air enters the engine, the front is made up of sundry systems drawing power from the turbine shaft.

(https://live.staticflickr.com/5530/9637784181_72a6b98f15_h.jpg)

(https://upload.wikimedia.org/wikipedia/commons/0/0e/Klimow_WK-1_side.jpg)
CFBV
Title: Re: Airco DH2.
Post by: NARSES2 on August 21, 2023, 05:57:05 AM
Quote from: Old Wombat on August 21, 2023, 02:28:07 AM
Quote from: NARSES2 on August 20, 2023, 06:05:08 AMCan I ask where the jet's air intake is ? Or does it come in between the pilots legs ? Curry night in  the Mess Thursday's ?  :angel:

The ring just forward of the wing strut, with lots of "V" shaped supports & simulated mesh, is where the air enters the engine, the front is made up of sundry systems drawing power from the turbine shaft.


Ah, right  :thumbsup:
Title: Re: Airco DH2.
Post by: frank2056 on August 21, 2023, 09:50:41 AM
(https://qph.cf2.quoracdn.net/main-qimg-063579ab74c32c7e9ca03b29f2aa7f78-lq)
Title: Re: Airco DH2.
Post by: zenrat on August 22, 2023, 04:47:05 AM
Intake issue already explained on pg.2.

Quote from: zenrat on August 07, 2023, 05:00:15 AM...Engine will be uncowled (why hide all that detail) so there will not be an intake in the conventional sense.  The centrifugal compressor will draw air in through the inlets like those seen here (mesh covered) on this Rolls Royce copy of the original Soviet Klimov design.
(https://upload.wikimedia.org/wikipedia/commons/8/84/Rolls_Royce_Nene.jpg)
Not sure how powerful the "suck" would be but Biggles might like to ensure he is strapped in.

Title: Re: Airco DH2.
Post by: jcf on August 22, 2023, 02:10:18 PM
"Radial flow"?  :o

Compressors of that sort are usually referred to as "centrifugal" flow and have been for a very long time and well before the invention of the turbo-jet engine. I don't believe I've ever seen one referred to as "radial flow" in any of my books about engines, aircraft, ground vehicle or marine, piston or turbine. 
Title: Re: Airco DH2.
Post by: killnoizer on August 26, 2023, 03:15:58 AM
Quote from: zenrat on August 20, 2023, 03:52:58 AMHmmm, yes.
Very good technical description Rheged.
:thumbsup:

Having removed the jigs and offered up the engine I realised the main mounting point for it could be a pin fitted between a hole drilled in the back of the engine and the original rotary motors boss which is moulded on the back of the firewall.  This means that the engine subframe doesn't have to actually mount the engine securely, just look like it does.
This is a good thing.

(https://live.staticflickr.com/65535/53129227739_d657f14ff8_z.jpg) (https://flic.kr/p/2oWRbpV)DH2 Jet WIP  20-08-2023 (https://flic.kr/p/2oWRbpV) by Fred Maillardet (https://www.flickr.com/photos/156376527@N06/), on Flickr

This
Is
Wonderful !!
Title: Re: Airco DH2.
Post by: zenrat on August 26, 2023, 05:59:16 AM
Engine subframe roughed out.  Needs a few fillets on the corners but it's basically done.
Now to move on to the tail.
Title: Re: Airco DH2.
Post by: buzzbomb on August 26, 2023, 04:21:36 PM
Every time I see this I smile.. it is a great wacky idea.

I really do like that engine, as you allude to... it would be quite useful in a lot of builds
Title: Re: Airco DH2.
Post by: zenrat on August 27, 2023, 04:08:55 AM
Progress pic.
(https://live.staticflickr.com/65535/53144786614_2fc9dab4b2_z.jpg) (https://flic.kr/p/2oYdVwo)DH2 Jet WIP 27-08-23 (https://flic.kr/p/2oYdVwo) by Fred Maillardet (https://www.flickr.com/photos/156376527@N06/), on Flickr




"Bertie" Biggles asked "is that my armchair from the mess?"
"Yes old chap."  Bertie polished his monocle " The Professor said it was better used here than it was supporting your jolly old backside in front of the fire"
"That's debatable.  But why is it attached to that length of rail wth what look like a couple of pairs of roller skates?"
Title: Re: Airco DH2.
Post by: Wardukw on August 27, 2023, 12:21:39 PM
That looks scary Fred...love it 😅
Title: Re: Airco DH2.
Post by: jcf on August 27, 2023, 03:59:39 PM
Are you going to paint the engine cage so that it looks like bamboo?  ;)
Title: Re: Airco DH2.
Post by: zenrat on August 28, 2023, 05:27:05 AM
Quote from: jcf on August 27, 2023, 03:59:39 PMAre you going to paint the engine cage so that it looks like bamboo?  ;)

I am now.  Excellent idea Jon.   :thumbsup:
Title: Re: Airco DH2.
Post by: zenrat on August 31, 2023, 04:23:41 AM
Airframe modifications are now complete and what little PSR that is required (mostly on the cockpit nacelle) has begun.  Carefully for this is one fragile build.
The straight sections of the engine cradle have been painted and look like either bamboo or over-ripe banananas.


"Bertie."
"Yes Biggles."
"Is that bamboo?"
"Bamboo?"
"Yes.  On the frame holding that, whatchermacallit, jet? engine  Is that bamboo?"
"Absolutely old bean.  Absorbs vibration according to The Professor.  Clever chap.  Remember theArt Deco Aluminium coffee service Mlle Yvonne used to use to bring us our coffee in bed every morning?  Well he melted it down and cast the fittings that holds the jolly old Chinese sticks."

Title: Re: Airco DH2.
Post by: Old Wombat on August 31, 2023, 06:47:53 AM
 ;D
Title: Re: Airco DH2.
Post by: Rheged on August 31, 2023, 07:12:12 AM
This gets better every time I look at it ...............and it was an amazing idea in the first place.
Title: Re: Airco DH2.
Post by: Wardukw on August 31, 2023, 12:57:34 PM
Quote from: Rheged on August 31, 2023, 07:12:12 AMThis gets better every time I look at it ...............and it was an amazing idea in the first place.
Agreed and the size still gets me ..I'd destroy that if I hiccupped  :o
Great work Fred 👏 👍
Title: Re: Airco DH2.
Post by: zenrat on September 01, 2023, 07:42:27 PM
Thanks folks.

Have you thought that maybe I have really big hands?

(https://live.staticflickr.com/65535/53158195894_d60a4d7367_z.jpg) (https://flic.kr/p/2oZpDCS)DH2 Jet WIP 02-08-23 01 (https://flic.kr/p/2oZpDCS) by Fred Maillardet (https://www.flickr.com/photos/156376527@N06/), on Flickr

(https://live.staticflickr.com/65535/53157410262_bc0c22d97e_z.jpg) (https://flic.kr/p/2oZkC6u)DH2 Jet WIP 02-08-23 03 (https://flic.kr/p/2oZkC6u) by Fred Maillardet (https://www.flickr.com/photos/156376527@N06/), on Flickr

The Professor engineered a gap in the rear bracing for the jet exhaust.

(https://live.staticflickr.com/65535/53158195889_2f7c28b5ed_z.jpg) (https://flic.kr/p/2oZpDCM)DH2 Jet WIP 02-08-23 04 (https://flic.kr/p/2oZpDCM) by Fred Maillardet (https://www.flickr.com/photos/156376527@N06/), on Flickr
Title: Re: Airco DH2.
Post by: scooter on September 01, 2023, 08:04:52 PM
Quote from: zenrat on September 01, 2023, 07:42:27 PMThe Professor engineered a gap in the rear bracing for the jet exhaust.
(https://i.pinimg.com/originals/6a/03/10/6a0310ff4b76b22f8bfec6a29b71b7c8.jpg)
"Well, of course I had to.  Can't have the tail be burned off by the engine.  You'd never get airborne, like that madman Roshon's multiplane.  Then we'd be right out and the airscrew would never be replaced.  And we can't have that, now can we?"
Title: Re: Airco DH2.
Post by: Captain Canada on September 01, 2023, 10:09:56 PM
Woah ! This is amazing ! Not just the crazy/cool idea, the whole thing ! Great job so far.
Title: Re: Airco DH2.
Post by: Wardukw on September 02, 2023, 02:41:54 AM
This does have a  very large coolness factor because it's so damn small.
Title: Re: Airco DH2.
Post by: Pellson on September 02, 2023, 03:13:42 AM
I'm not sure whether it's the Biggles story or the jetification of that old DH2 that's entertaining me more here..  :wub:  :o
Title: Re: Airco DH2.
Post by: Rheged on September 02, 2023, 03:29:20 AM
It has occurred to me (and no doubt to many others) that there is a  Gnôme Monosoupape 9-cylinder rotary engine  lying around unused from this wondrous conversion.  I am wondering where that will appear...............perhaps as the motive power for a coastal motor boat, or a hydrofoil, or ........................................   Suggestions, please!
Title: Re: Airco DH2.
Post by: PR19_Kit on September 02, 2023, 04:43:49 AM
Quote from: Rheged on September 02, 2023, 03:29:20 AM...............perhaps as the motive power for a coastal motor boat, or a hydrofoil, or ........................................   Suggestions, please!


A Whiffed X-15 perhaps?  ;)
Title: Re: Airco DH2.
Post by: zenrat on September 02, 2023, 05:32:26 AM
The 1/72 Monosoupape is indeed spare but TBH it's not much more than an oddly shaped blob.

Still, waste not want not.  Where's that 3d printed dinghy...
Title: Re: Airco DH2.
Post by: Old Wombat on September 02, 2023, 08:55:58 AM
Quote from: zenrat on September 01, 2023, 07:42:27 PMHave you thought that maybe I have really big hands?

(https://live.staticflickr.com/65535/53158195894_d60a4d7367_z.jpg) (https://flic.kr/p/2oZpDCS)DH2 Jet WIP 02-08-23 01 (https://flic.kr/p/2oZpDCS) by Fred Maillardet (https://www.flickr.com/photos/156376527@N06/), on Flickr

No, because I know how big (small) that engine is. ;D
Title: Re: Airco DH2.
Post by: NARSES2 on September 03, 2023, 03:54:12 AM
Quote from: zenrat on September 01, 2023, 07:42:27 PMThe Professor engineered a gap in the rear bracing for the jet exhaust.

(https://live.staticflickr.com/65535/53158195889_2f7c28b5ed_z.jpg) (https://flic.kr/p/2oZpDCM)DH2 Jet WIP 02-08-23 04 (https://flic.kr/p/2oZpDCM) by Fred Maillardet (https://www.flickr.com/photos/156376527@N06/), on Flickr


Neat solution  :thumbsup:
Title: Re: Airco DH2.
Post by: zenrat on September 03, 2023, 06:58:09 AM
Yeah, but i didn't think to check if there should be any rigging between the booms.

Still, it's non existence can explain the fact that the tail is slightly twisted.
Title: Re: Airco DH2.
Post by: Wardukw on September 03, 2023, 11:52:59 AM
Quote from: zenrat on September 03, 2023, 06:58:09 AMYeah, but i didn't think to check if there should be any rigging between the booms.

Still, it's non existence can explain the fact that the tail is slightly twisted.
Ahhh just think of it as overpowered slightly and in flight it straightens up  :thumbsup:
Title: Re: Airco DH2.
Post by: jcf on September 03, 2023, 12:51:40 PM
Quote from: zenrat on September 03, 2023, 06:58:09 AMYeah, but i didn't think to check if there should be any rigging between the booms.

Still, it's non existence can explain the fact that the tail is slightly twisted.
Add diagonals between the verticals.
;)
Title: Re: Airco DH2.
Post by: perttime on September 03, 2023, 09:12:34 PM
Quote from: Wardukw on September 03, 2023, 11:52:59 AM
Quote from: zenrat on September 03, 2023, 06:58:09 AMYeah, but i didn't think to check if there should be any rigging between the booms.

Still, it's non existence can explain the fact that the tail is slightly twisted.
Ahhh just think of it as overpowered slightly and in flight it straightens up  :thumbsup:
I like the way you think  :mellow:  :lol:  ;D
Title: Re: Airco DH2.
Post by: NARSES2 on September 04, 2023, 06:14:56 AM
Quote from: zenrat on September 03, 2023, 06:58:09 AMStill, it's non existence can explain the fact that the tail is slightly twisted.

As possibly is it's builder ?  :angel:  ;D
Title: Re: Airco DH2.
Post by: zenrat on September 04, 2023, 06:30:27 AM
 :mellow:
Title: Re: Airco DH2.
Post by: zenrat on September 06, 2023, 05:48:41 AM
Paint on today.  Not having any suitable undoped linen paint for the fabric covering I have painted it all with Vallejo Deck Tan.  I may mask all the ribs on the upper wing and give it a coat of lightened paint like i've seen done in all the magazine Wingnut builds.  But there's a lot of ribs to tape.  I'm certainly not bothering to do the underside or the lower wing.
Title: Re: Airco DH2.
Post by: NARSES2 on September 06, 2023, 06:16:38 AM
You can use lots of shades for unpainted linen, it's not as though there was an official spec.
Title: Re: Airco DH2.
Post by: Wardukw on September 06, 2023, 10:52:13 AM
And remember Fred those Wingnut birds are all 32nd scale..not 72nd..much easier to do with the big birds...reckon it would look great if ya did tho..would break up a solid single colour 👍
Title: Re: Airco DH2.
Post by: zenrat on September 07, 2023, 06:16:11 AM
1/32?  That would be even weirder than 1/48!   :wacko:

Tis done.  Wasn't too hard as I just did the top of the upper wing and the horizontal tail.  Rigging it will be harder.
I just cut strips of 0.5 mm tape and stuck them down over the moulded ridges where the ribs were.
Title: Re: Airco DH2.
Post by: jcf on September 07, 2023, 10:09:46 AM
Quote from: NARSES2 on September 06, 2023, 06:16:38 AMYou can use lots of shades for unpainted linen, it's not as though there was an official spec.
Technically speaking clear-doped linen (CDL) is painted.  ;)
Title: Re: Airco DH2.
Post by: Wardukw on September 07, 2023, 12:04:11 PM
Quote from: zenrat on September 07, 2023, 06:16:11 AM1/32?  That would be even weirder than 1/48!   :wacko:

Tis done.  Wasn't too hard as I just did the top of the upper wing and the horizontal tail.  Rigging it will be harder.
I just cut strips of 0.5 mm tape and stuck them down over the moulded ridges where the ribs were.

At your age I don't want to shock you to much Fred but there's many many many different scales out there not just 72nd.
I know you'll say "Say it isn't so" but I'm afraid to say my good friend that yes it's ture.  :wacko:  :wacko:
Title: Re: Airco DH2.
Post by: zenrat on September 08, 2023, 05:47:52 AM
Quote from: jcf on September 07, 2023, 10:09:46 AM
Quote from: NARSES2 on September 06, 2023, 06:16:38 AMYou can use lots of shades for unpainted linen, it's not as though there was an official spec.
Technically speaking clear-doped linen (CDL)is painted.  ;)

I know that.  I forgot what it was called.  Senior moment.

Quote from: Wardukw on September 07, 2023, 12:04:11 PM
Quote from: zenrat on September 07, 2023, 06:16:11 AM1/32?  That would be even weirder than 1/48!   :wacko:

Tis done.  Wasn't too hard as I just did the top of the upper wing and the horizontal tail.  Rigging it will be harder.
I just cut strips of 0.5 mm tape and stuck them down over the moulded ridges where the ribs were.

At your age I don't want to shock you to much Fred but there's many many many different scales out there...

Yes.  Other than 1/72 for aircraft there is 1/144 for bigger aircraft (and ekranoplans), 1/25 for cars, 1/35 for armoured cars, and 1/48 for...

...tanks.   ;D

Title: Re: Airco DH2.
Post by: NARSES2 on September 08, 2023, 06:10:14 AM
Quote from: jcf on September 07, 2023, 10:09:46 AM
Quote from: NARSES2 on September 06, 2023, 06:16:38 AMYou can use lots of shades for unpainted linen, it's not as though there was an official spec.
Technically speaking clear-doped linen (CDL)is painted.  ;)

Technically speaking, yes  ;D
Title: Re: Airco DH2.
Post by: Old Wombat on September 08, 2023, 08:17:21 AM
Quote from: zenrat on September 08, 2023, 05:47:52 AM
Quote from: Wardukw on September 07, 2023, 12:04:11 PM
Quote from: zenrat on September 07, 2023, 06:16:11 AM1/32?  That would be even weirder than 1/48!   :wacko:

At your age I don't want to shock you to much Fred but there's many many many different scales out there...

Yes.  Other than 1/72 for aircraft there is 1/144 for bigger aircraft (and ekranoplans), 1/25 for cars, 1/35 for armoured cars, and 1/48 for...

...tanks.   ;D

You're a weird, weird man, Fred! :rolleyes:
Title: Re: Airco DH2.
Post by: PR19_Kit on September 08, 2023, 10:31:34 AM
Quote from: Old Wombat on September 08, 2023, 08:17:21 AM
Quote from: zenrat on September 08, 2023, 05:47:52 AMYes.  Other than 1/72 for aircraft there is 1/144 for bigger aircraft (and ekranoplans), 1/25 for cars, 1/35 for armoured cars, and 1/48 for...

...tanks.  ;D


You're a weird, weird man, Fred! :rolleyes:


Sounds perfectly normal to me.  ;D
Title: Re: Airco DH2.
Post by: Wardukw on September 08, 2023, 05:06:07 PM
Quote from: PR19_Kit on September 08, 2023, 10:31:34 AM
Quote from: Old Wombat on September 08, 2023, 08:17:21 AM
Quote from: zenrat on September 08, 2023, 05:47:52 AMYes.  Other than 1/72 for aircraft there is 1/144 for bigger aircraft (and ekranoplans), 1/25 for cars, 1/35 for armoured cars, and 1/48 for...

...tanks.  ;D


You're a weird, weird man, Fred! :rolleyes:


Sounds perfectly normal to me.  ;D
Nope I'm with Guy on this one  :o  :unsure:
Title: Re: Airco DH2.
Post by: zenrat on September 09, 2023, 05:17:08 AM
Quote from: Old Wombat on September 08, 2023, 08:17:21 AMYou're a weird, weird man, Fred! :rolleyes:

You only just worked that out?

Title: Re: Airco DH2.
Post by: Old Wombat on September 09, 2023, 05:20:23 AM
Quote from: zenrat on September 09, 2023, 05:17:08 AM
Quote from: Old Wombat on September 08, 2023, 08:17:21 AMYou're a weird, weird man, Fred! :rolleyes:

You only just worked that out?

Oh, Hell, no, it's just the first time I've felt the need to express it. :wacko:
Title: Re: Airco DH2.
Post by: Rick Lowe on September 09, 2023, 02:37:23 PM
Quote from: Old Wombat on September 09, 2023, 05:20:23 AM
Quote from: zenrat on September 09, 2023, 05:17:08 AM
Quote from: Old Wombat on September 08, 2023, 08:17:21 AMYou're a weird, weird man, Fred! :rolleyes:

You only just worked that out?

Oh, Hell, no, it's just the first time I've felt the need to express it. :wacko:

Yeah, it's all about not shattering someone's long-held self-delusions...  ;D  ;D
Title: Re: Airco DH2.
Post by: zenrat on September 10, 2023, 04:21:22 AM
I still have the school report my form tutor wrote when I left school.
"Fred is eccentric..."
My proudest moment.

Transfers on the DH2.  Luckilly one of the two rudder options could be flipped.
Presumably the roundels were that size so the Fokkers could find them easilly...
You can just see where I masked the rib tapes.  It's very subtle.

(https://live.staticflickr.com/65535/53176896066_7810f83b44_z.jpg) (https://flic.kr/p/2p24uxC)DH2 Jet WIP 10-09-23 (https://flic.kr/p/2p24uxC) by Fred Maillardet (https://www.flickr.com/photos/156376527@N06/), on Flickr
Title: Re: Airco DH2.
Post by: Vulcan7 on September 10, 2023, 04:31:50 AM
looking really good  :thumbsup:
Title: Re: Airco DH2.
Post by: Old Wombat on September 10, 2023, 04:36:53 AM
The ribbing is subtle but very good! :thumbsup:
Title: Re: Airco DH2.
Post by: NARSES2 on September 10, 2023, 06:47:58 AM
That's looking very good mate  :thumbsup:

Quote from: zenrat on September 10, 2023, 04:21:22 AMI still have the school report my form tutor wrote when I left school.
"Fred is eccentric..."
My proudest moment.


My favourite was at the end of my second year and written in vivid green ink by Mr Callaghan our GMD (technical drawing) master who wrote " Edwards has neither interest nor aptitude for the subject and thus spends most of the lesson in attempts to keep the rest of the class amused. He's very good at this." I dropped GMD at the end of that year   :angel:
Title: Re: Airco DH2.
Post by: Wardukw on September 10, 2023, 11:52:36 AM
We had report cards here and I still remember one of the most contradictory remarks I've ever had on one card from 2 different so called teachers.
One said I work great by myself and needs to learn to work better in a team .
The other..complete opposite..on the same card..even mum and dad were scratching their heads.
Title: Re: Airco DH2.
Post by: Old Wombat on September 11, 2023, 02:52:03 AM
Quote from: Wardukw on September 10, 2023, 11:52:36 AMWe had report cards here and I still remember one of the most contradictory remarks I've ever had on one card from 2 different so called teachers.
One said I work great by myself and needs to learn to work better in a team .
The other..complete opposite..on the same card..even mum and dad were scratching their heads.

Different subjects, different interest levels, different aptitude; all can play their part. ;)
Title: Re: Airco DH2.
Post by: zenrat on September 24, 2023, 04:13:46 AM
Painting is mostly complete.  More colours on it now including some fake wood effect on the struts.

(https://live.staticflickr.com/65535/53209827333_3bea7f28c5_z.jpg) (https://flic.kr/p/2p4YgS6)DH2 Jet WIP 24-09-2023 (https://flic.kr/p/2p4YgS6) by Fred Maillardet (https://www.flickr.com/photos/156376527@N06/), on Flickr

Title: Re: Airco DH2.
Post by: Old Wombat on September 24, 2023, 04:50:01 AM
Lookin' good! ;D  :thumbsup:
Title: Re: Airco DH2.
Post by: zenrat on September 24, 2023, 04:58:40 AM
Thanks mate.
It just needs some clear on the bare metal areas (I satin cleared over them  :banghead: } and then I can permanently attach the engine and begin the Joy Of Rigging.   :mellow:
Title: Re: Airco DH2.
Post by: Vulcan7 on September 24, 2023, 09:48:24 AM
You should get extra points for doing rigging  ;D  :thumbsup:  looking a beauty  :thumbsup:
Title: Re: Airco DH2.
Post by: buzzbomb on September 24, 2023, 03:08:57 PM
Hitting the mark there Fred.. very good work
Title: Re: Airco DH2.
Post by: Wardukw on September 24, 2023, 08:10:18 PM
Brilliant stuff Fred...this will be fun with the rigging..but man it's gonna look amazing 😉
Title: Re: Airco DH2.
Post by: zenrat on September 25, 2023, 03:41:37 AM
I can't not rig it.  But it'll be more a suggestion of full rigging than an accurate full on t's crossed i's dotted effort.  Enough wires to look like there are enough wires.
Title: Re: Airco DH2.
Post by: NARSES2 on September 25, 2023, 06:32:03 AM
Quote from: zenrat on September 25, 2023, 03:41:37 AMI can't not rig it.  But it'll be more a suggestion of full rigging than an accurate full on t's crossed i's dotted effort.  Enough wires to look like there are enough wires.


Sensible  :thumbsup:
Title: Re: Airco DH2.
Post by: PR19_Kit on September 25, 2023, 06:47:18 AM
Do you have a scale budgerigar to put in there before you rig it?

My Dad swore they put one inside the rigging of the Audaxes when he was on 4 (AC) Sqdn, before a re-rig, and if the bird got out afterwards they knew they'd missed a wire............
Title: Re: Airco DH2.
Post by: Wardukw on September 25, 2023, 12:19:36 PM
When I build my Gotha bomber it's kinda strange but I'm looking to the rigging side of it ..it's just not complete without it and it looks like something is missing..yeah the rigging  :banghead:  :wacko:
Title: Re: Airco DH2.
Post by: Steel Penguin on September 25, 2023, 12:24:55 PM
its looking good so far Fred, its going to be Jewel like in its beauty when finished  :thumbsup:
Title: Re: Airco DH2.
Post by: zenrat on September 26, 2023, 05:22:13 AM
Still plenty of chances for me to f**k it up...
Title: Re: Airco DH2.
Post by: zenrat on September 29, 2023, 05:45:54 AM
Rigged.

As I said above, not all the wires but enough wires to look like there are enough wires.

My rigging technique is improving but some touching up now required.
Title: Re: Airco DH2.
Post by: PR19_Kit on September 29, 2023, 06:08:30 AM
Quote from: zenrat on September 29, 2023, 05:45:54 AMAs I said above, not all the wires but enough wires to look like there are enough wires.


 ;D  ;D  ;D  ;D  ;D  ;D  ;D  ;D  ;D  ;D  ;D  :thumbsup:  :thumbsup:  :thumbsup:
Title: Re: Airco DH2.
Post by: NARSES2 on September 29, 2023, 06:33:28 AM
Quote from: zenrat on September 29, 2023, 05:45:54 AMRigged.

As I said above, not all the wires but enough wires to look like there are enough wires.


In 1/72 that's exactly the way to do it. (To miss-quote Punch and Madness  :angel: ) In 1/72 "accurate" rigging can quite often look far to cluttered.

Title: Re: Airco DH2.
Post by: zenrat on September 30, 2023, 05:08:36 AM
Quote from: NARSES2 on September 29, 2023, 06:33:28 AM
Quote from: zenrat on September 29, 2023, 05:45:54 AMRigged.

As I said above, not all the wires but enough wires to look like there are enough wires.


In 1/72 that's exactly the way to do it. (To miss-quote Punch and Madness  :angel: ) In 1/72 "accurate" rigging can quite often look far to cluttered.



In 1/72 accurate rigging on a DH2 would drive one insane.

If one were to use accurately scaled wires to rig a 1/72 biplane would they be visible to the naked eye?
Title: Re: Airco DH2.
Post by: PR19_Kit on September 30, 2023, 05:30:07 AM
Quote from: zenrat on September 30, 2023, 05:08:36 AMIf one were to use accurately scaled wires to rig a 1/72 biplane would they be visible to the naked eye?


Maybe not. This is a 1/72 Hawker Audax I built for my Dad from an Airfix Hart and an Aeroclub conversion originally produced for this model by John Adams, and later incorporated in his range of lovely stuff. John recommended some of his rigging stuff for it, which I used, and it was VERY fiddly, but I managed it, and you can see (or not....) that it's only JUST visible.

(https://imagizer.imageshack.com/img923/2903/YF8bBy.jpg)
Title: Re: Airco DH2.
Post by: NARSES2 on September 30, 2023, 06:15:25 AM
Quote from: zenrat on September 30, 2023, 05:08:36 AMIn 1/72 accurate rigging on a DH2 would drive one insane.

If one were to use accurately scaled wires to rig a 1/72 biplane would they be visible to the naked eye?


To do accurate rigging you'd also need to use turnbuckles for a lot of aircraft.  I think some types had the attachment point "buried" in the wing, but I'm not sure. I've seen them done in 1/32 and the occasional 1/48 model, but not in 1/72.
Title: Re: Airco DH2.
Post by: NARSES2 on September 30, 2023, 06:15:49 AM
Nice Audax Kit  :thumbsup:
Title: Re: Airco DH2.
Post by: PR19_Kit on September 30, 2023, 07:46:28 AM
Thanks Chris, it's the one and only biplane I've ever built.

I did it as an 80th b'day pressie for my Dad, and he came closest to breaking down when I gave it to him that I ever saw. It was his fave aircraft by far.  ;D
Title: Re: Airco DH2.
Post by: zenrat on October 03, 2023, 04:28:16 AM
Audax looks great Kit.
 :thumbsup:

So, one GB build done and dusted and this one is close.

I've got the escape-seat in place and today carved and sanded a parachute pack from a blob of hardened putty.
I've painted a gun and am adding black wash to add depth to the decal (as they like to say in the magazines).
Joystick needs a touch of paint and can then be attached.
Title: Re: Airco DH2.
Post by: zenrat on October 04, 2023, 03:08:53 AM
I found an AI generated text website and decided to see what is could come up with in the way of a back story.
I typed in "Biggles and the Dastardly Hun".

Biggles was an ace pilot dusring WWI, a brave and heroic figure who fought against the forces of the dastardly Hun. Biggles was a master of aerial combat, and he was known to never back down from a challenge. He flew a number of different aircraft, from the Sopwith Camel to the De Havilland DH.2, and he was an expert at out-maneuvering and out-flying his opponents. He was also a master of deception, often leading the enemy into traps and ambushes, and he was known to be extremely daring and courageous in the face of danger. He was constantly on the look-out for new and innovative ways to beat the enemy, and was always ready to take on any challenge. Biggles was a true hero of the skies, and his bravery and skill made him an inspiration to generations of pilots who followed him.

I won't be using it, but it shows what they can do now...

Title: Re: Airco DH2.
Post by: scooter on October 04, 2023, 04:07:20 AM
Write like a primary schooler?
Title: Re: Airco DH2.
Post by: zenrat on October 04, 2023, 04:11:29 AM
Write like me on a slow day.

Title: Re: Airco DH2.
Post by: PR19_Kit on October 04, 2023, 04:25:55 AM
What could it come up with when asked to include the jet engine in the story though?  ;)  ;D
Title: Re: Airco DH2.
Post by: zenrat on October 05, 2023, 02:59:53 AM
Quote from: PR19_Kit on October 04, 2023, 04:25:55 AMWhat could it come up with when asked to include the jet engine in the story though?  ;)  ;D

Maybe i'll find out.

Finished this today.  No pics yet.  Well other than one on my phone which you'll only get to see if you are at Adelaide Model Expo on Satyrday.  :mellow:
And because i'll be in Adelaide over the weekend there will be no more pics taken until next week.

Title: Re: Airco DH2.
Post by: zenrat on October 05, 2023, 03:05:54 AM
OK, here's a different website's attempt at a Biggles story.

I typed in the title and the AI did the rest.  This took under a minute to produce.  All I have edited is to correct from american spellings.

Biggles Flies a Jet Powered DH2.

Introduction:
In the world of aviation, few names command as much respect and admiration as Squadron Leader James Bigglesworth, better known as Biggles.  Throughout his illustrious career, Biggles has piloted a wide array of aircraft, leaving his mark on the history of flight.  Among his numerous daring exploits and ground-breaking missions, one particular adventure stands out – the time when Biggles flew a jet-powered DH2.  This unprecedented undertaking not only pushed the boundaries of what was previously thought possible but also showcased Biggles' exceptional skill and bravery in the face of adversity.  Join us on this incredible journey as we delve into the story of Biggles' extraordinary flight powered by a jet-propelled De Havilland DH2.

Chapter 1: The Genesis of a Revolutionary Idea.
It all began one stormy night at Hangar 17, a place where Biggles and his resourceful team would brainstorm their wildest aviation dreams.  Fuelled by innovative ideas, they pondered the notion of marrying a ground-breaking jet engine with the legendary De Havilland DH2, a biplane known for its exceptional manoeuvrability and stability.  Little did they know that this idea would birth one of the most audacious and awe-inspiring flights in aviation history.

Chapter 2: Converting the DH2
With the genesis of their idea, Biggles and his team set to work, meticulously planning the modifications required to convert the DH2 into a jet-powered marvel.  The aircraft's wings were redesigned to accommodate the jet engines, which necessitated substantial reinforcement for the added weight and enhanced performance.  The cockpit underwent significant changes to ensure optimal control and navigation, making room for additional dials, switches, and levers required for jet propulsion.

Chapter 3: The Test Flight
After countless hours of dedicated work and multiple setbacks, the moment of truth arrived.  Biggles took to the skies in the newly modified DH2, ready to test his ground-breaking creation.  As the engine roared to life and the jet propulsion kicked in, Biggles experienced an exhilarating rush like never before.  The aircraft soared through the clouds, effortlessly gliding through the air with immense speed and precision. It was a sight to behold, a testament to Biggles' ingenuity and audacity.

Chapter 4: Facing Challenges
As with any remarkable undertaking, Biggles encountered unforeseen challenges during his jet-powered DH2 flight.  One such hurdle came in the form of the aircraft's increased weight due to the added jet engines.  Biggles had to masterfully adapt his piloting techniques to compensate for the altered centre of gravity and maintain stability.  Additionally, the newfound speed brought unexpected turbulence, pushing Biggles' skills to their limits.  Yet his unwavering determination and undying passion for flight propelled him forward, steadily overcoming each obstacle in his path.

Chapter 5: Triumph and Legacy
In the end, Biggles' flight in the jet-powered DH2 was an unequivocal triumph.  He successfully demonstrated the incredible potential of combining jet propulsion with a classic biplane design, forever opening new doors in aviation innovation and inspiring future generations of pilots to push the boundaries of what is possible.  Biggles' audacious feat stands as a testament to the indomitable spirit of human exploration and serves as a reminder that dreams can become reality with determination, skill, and a little bit of daring.

Conclusion:
Biggles' flight in the jet-powered DH2 remains one of the most significant milestones in the history of aviation.  It showcased the power of innovation and determination, proving that even a legendary aircraft like the DH2 could be transformed into something entirely new and awe-inspiring.  This ambitious endeavour not only solidified Biggles' place in aviation folklore but also left an indelible mark on the future of flight.  Through his daring and adventurous spirit, Biggles continues to motivate generations of aviators to push the boundaries of what is possible, forever inspiring us to reach for the skies and beyond.



Title: Re: Airco DH2.
Post by: Flyer on October 05, 2023, 03:08:23 AM
Cool, waiting patiently to see it. Unfortunately there is no way I'll be able to attend the show. Will you be driving over to Adelaide via the coastal route by any chance?
Title: Re: Airco DH2.
Post by: zenrat on October 05, 2023, 03:54:59 AM
Quote from: Flyer on October 05, 2023, 03:08:23 AMCool, waiting patiently to see it. Unfortunately there is no way I'll be able to attend the show. Will you be driving over to Adelaide via the coastal route by any chance?

Inland probly.  We are transporting a 14yr old niece over and are on a deadline.  Leaving at 5am tomorrow to avoid city traffic.
Title: Re: Airco DH2.
Post by: Flyer on October 05, 2023, 03:59:27 AM
Bugger. Nutha time then. :thumbsup:
Title: Re: Airco DH2.
Post by: zenrat on October 05, 2023, 04:05:53 AM
Quote from: Flyer on October 05, 2023, 03:59:27 AMBugger. Nutha time then. :thumbsup:

Definitely.  When we have more time.  I prefer the scenic route but it does take longer.
Title: Re: Airco DH2.
Post by: PR19_Kit on October 05, 2023, 04:26:56 AM
That 2nd Biggles story is somewhat worrying.  :-\

If a MACHINE can come up with that in a few seconds, what are the prospects for any future authors? It reads just as if one of us had written it, except it's a trifle 'wordy', a few too many syllables perhaps, but otherwise it's pretty good.
Title: Re: Airco DH2.
Post by: scooter on October 05, 2023, 04:38:22 AM
Quote from: PR19_Kit on October 05, 2023, 04:26:56 AMThat 2nd Biggles story is somewhat worrying.  :-\

If a MACHINE can come up with that in a few seconds, what are the prospects for any future authors? It reads just as if one of us had written it, except it's a trifle 'wordy', a few too many syllables perhaps, but otherwise it's pretty good.

That's why WGA (resolved), SAG-AFTRA, and SAG-AFTRA (for computer games) went on strike; while several authors, including Grisham and GRRM are suing AI writing sites for copyright infringement.
Title: Re: Airco DH2.
Post by: NARSES2 on October 05, 2023, 06:13:08 AM
I've now got to decide if we can award AI a Whiffie ?  :angel:  ;)
Title: Re: Airco DH2.
Post by: Rick Lowe on October 06, 2023, 01:25:51 AM
Quote from: NARSES2 on October 05, 2023, 06:13:08 AMI've now got to decide if we can award AI a Whiffie ?  :angel:  ;)

If she looks like Caprica 6 or Boomer, I say give them anything they want...  :wub:  :wub:
Title: Re: Airco DH2.
Post by: scooter on October 06, 2023, 01:36:22 AM
Quote from: Rick Lowe on October 06, 2023, 01:25:51 AM
Quote from: NARSES2 on October 05, 2023, 06:13:08 AMI've now got to decide if we can award AI a Whiffie ?  :angel:  ;)

If she looks like Caprica 6 or Boomer, I say give them anything they want...  :wub:  :wub:
:thumbsup:
Or #3  :wub:
Title: Re: Airco DH2.
Post by: Rick Lowe on October 06, 2023, 01:45:35 AM
Quote from: scooter on October 06, 2023, 01:36:22 AM
Quote from: Rick Lowe on October 06, 2023, 01:25:51 AM
Quote from: NARSES2 on October 05, 2023, 06:13:08 AMI've now got to decide if we can award AI a Whiffie ?  :angel:  ;)

If she looks like Caprica 6 or Boomer, I say give them anything they want...  :wub:  :wub:
:thumbsup:
Or #3  :wub:

True - I had forgotten Lucy...  :wub:  and she's a Kiwi Gal, too! :thumbsup:
Title: Re: Airco DH2.
Post by: zenrat on October 11, 2023, 04:38:50 AM
No AI here.  Just me.

Airco DH2 Jet.

(https://live.staticflickr.com/65535/53250768844_dced9521b4_b.jpg) (https://flic.kr/p/2p8A7md)Airco DH-2 Jet - 1 (https://flic.kr/p/2p8A7md) by Fred Maillardet (https://www.flickr.com/photos/156376527@N06/), on Flickr

Biggles wandered into the back of the 266 squadron hanger and stopped short with amazement.
"Bertie!" he exclaimed "by the anti clockwise propeller of my sainted aunt, what the deuce has The Professor done to this poor old DH2?"
"Well old chap" Bertie replied adjusting his monocle "he's jolly well gone and fitted it with what he calls a 'jet' engine.  Says it's going the be the coming thing and pretty soon every bally kite will be flying around looking like its tails on fire".
"Hah!  That'll be the day.  I'm sure this'll just be another flash in the pan.  That's if it even works at all.  Shall we take it up?  Come on, give me a hand pushing it out.  I don't suppose you know how to start it do you?"
"I suppose we just light the blue touch paper.  Here, take my lighter..."

(https://live.staticflickr.com/65535/53250703803_4804f027b4_b.jpg) (https://flic.kr/p/2p8zM1P)Airco DH-2 Jet - 21 (https://flic.kr/p/2p8zM1P) by Fred Maillardet (https://www.flickr.com/photos/156376527@N06/), on Flickr

"Bertie" Biggles asked "is that my armchair from the mess?"
"Yes old chap."  Bertie polished his monocle " The Professor said it was better used here than it was supporting your jolly old backside in front of the fire"
"That's debatable.  But why is it attached to that length of rail with what look like a couple of pairs of roller skates?"
"It's what he calls an Evacuator Seat.  Says that it's a major contribution to air safety.  Says that pretty soon we'll all be flying in them.  Apparently what y'do is pull on this cord here which causes the ACME (Aeroplane  Construction and Maintenance Establishment) parachute up there to open, dragging the seat up the length of rail whence it will fly clear of the plane.  He says you'll then drift down to earth safely ensconced in a comfy chair.  See, it even has straps to hold you in.  Probably got a pot of tea and a plate of bikkies as well so you can have a spot of tiffin on the way down.

(https://live.staticflickr.com/65535/53250704068_c84a5ba3f0_b.jpg) (https://flic.kr/p/2p8zM6o)Airco DH-2 Jet - 9 (https://flic.kr/p/2p8zM6o) by Fred Maillardet (https://www.flickr.com/photos/156376527@N06/), on Flickr

"Bertie."
"Yes Biggles."
"Is that bamboo?"
"Bamboo?"
"Yes.  On the frame holding that, whatchermacallit, jet? engine  Is that bamboo?"
"Absolutely old bean.  Absorbs vibration according to The Professor.  Bally clever chap.  Remember the Art Deco Aluminium coffee service that cute little Mlle Yvonne used to use to bring us our coffee in in bed every morning?  Well he melted it down and cast the fittings that holds the jolly old Chinese sticks."

(https://live.staticflickr.com/65535/53249528622_66034c09ce_b.jpg) (https://flic.kr/p/2p8tKF5)Airco DH-2 Jet - 17 (https://flic.kr/p/2p8tKF5) by Fred Maillardet (https://www.flickr.com/photos/156376527@N06/), on Flickr

"Bertie" said Biggles "pass me a cigarette would you".
"Sorry old chap, no can do.  This edition has just been reprinted in 1975 in a children's book cub edition and you're off the jolly old smokes now until at least 1996 when nostalgia brings back unbowdlerised texts for the adult market".
"Heck's bells that's unexpectedly disappointing" ejaculated Biggles with a scowl "I'm so darned annoyed I'm off to the mess for a stiff glass of pink lemonade.  Oh dear, not that as well.  Gosh!.."
And with that he shrugged on his leather flying coat, knotted his silk scarf around his neck, lit the blue touch paper and roared off into a crisp Flanders dawn to hunt down Von Stalhein because he knew that while the prigs and the do-gooders might take away his fags and his gin, deep in their shrivelled little black hearts they still had one thing in common with him, the joy of shooting a racially stereotyped arch enemy out of the sky in a ball of fire.

(https://live.staticflickr.com/65535/53250703798_b350f3fb57_b.jpg) (https://flic.kr/p/2p8zM1J)Airco DH-2 Jet - 22 (https://flic.kr/p/2p8zM1J) by Fred Maillardet (https://www.flickr.com/photos/156376527@N06/), on Flickr

The Model.

Revell 1/72 Airco DH2.
A&A Klimov VK-1 engine (from 1/72 Lavochkin La200b).

(https://live.staticflickr.com/65535/53250703783_ac5e836aee_b.jpg) (https://flic.kr/p/2p8zM1t)Airco DH-2 Jet - 23 (https://flic.kr/p/2p8zM1t) by Fred Maillardet (https://www.flickr.com/photos/156376527@N06/), on Flickr
Title: Re: Airco DH2. Finished Pics Pg 10.
Post by: Steel Penguin on October 11, 2023, 04:50:35 AM
 :thumbsup:
just utterly brilliant,  and the backstory is smile raising as well.
Title: Re: Airco DH2. Finished Pics Pg 10.
Post by: Dizzyfugu on October 11, 2023, 04:51:40 AM
Sweet!  :wub:
Title: Re: Airco DH2. Finished Pics Pg 10.
Post by: Old Wombat on October 11, 2023, 05:01:26 AM
Having had a sneak preview of this on the weekend, it certainly doesn't disappoint! :thumbsup:  :thumbsup:

Backstory(Lies/BS/Confabulation)'s right on the money, too! ;D  ;D
Title: Re: Airco DH2. Finished Pics Pg 10.
Post by: Vulcan7 on October 11, 2023, 05:47:42 AM
BRILLIANT BUILD!  ;D  :mellow:  :mellow:  :mellow:  :tornado:  :thumbsup:  :thumbsup:  :thumbsup:  :thumbsup:
Title: Re: Airco DH2. Finished Pics Pg 10.
Post by: NARSES2 on October 11, 2023, 06:31:10 AM
Absolutely marvellous old boy  ;)  :bow:  :bow:
Title: Re: Airco DH2. Finished Pics Pg 10.
Post by: PR19_Kit on October 11, 2023, 07:25:10 AM
OUTSTANDING!

One of the best ever models ever seen on here Fred. Absolutely the BUSINESS.

And the backstory is an absolute hoot too, superb.  :thumbsup:  :thumbsup:  :thumbsup:  :thumbsup:  :thumbsup:
Title: Re: Airco DH2. Finished Pics Pg 10.
Post by: Wardukw on October 11, 2023, 11:08:30 AM
Out standing..absolutely outstanding build  :thumbsup:  :thumbsup:
Backstory is a great read 😀 👍
Love this Fred 😁😁
Title: Re: Airco DH2. Finished Pics Pg 10.
Post by: Rick Lowe on October 11, 2023, 11:26:21 AM
As has already been noted, old chap!  ;D  :thumbsup:

Pip-pip!
Title: Re: Airco DH2. Finished Pics Pg 10.
Post by: Rheged on October 11, 2023, 01:26:32 PM
Superb!!  A cracking good model and a well constructed backstory.   Whiffery as it should be done.
Title: Re: Airco DH2. Finished Pics Pg 10.
Post by: buzzbomb on October 11, 2023, 02:17:42 PM
Just following along with the previous accolades... superb build in all respects :wub:
Title: Re: Airco DH2. Finished Pics Pg 10.
Post by: Flyer on October 12, 2023, 12:10:08 AM
Sweet! :thumbsup:

Seriously tempted to build something very similar for R/C.  :mellow:  not having financial means of owning a model turbine though I'd have to substitute with an electric ducted fan for propulsion.
Title: Re: Airco DH2. Finished Pics Pg 10.
Post by: zenrat on October 12, 2023, 02:19:05 AM
Thanks folks for all the compliments.

I've been thinking about a jet biplane for years (keen reader of the Trigan Empire comic strip) so when I saw the quality of the engine included in the La 200b it just had to be done.
Title: Re: Airco DH2. Finished Pics Pg 10.
Post by: DogfighterZen on October 12, 2023, 08:26:06 AM
Brilliant in every way! Bravo, Fred!  :bow:  :bow:  :bow:
Title: Re: Airco DH2. Finished Pics Pg 10.
Post by: frank2056 on October 12, 2023, 09:32:13 AM
Fantastic build! The rigging itself would have made it outstanding.
Title: Re: Airco DH2. Finished Pics Pg 10.
Post by: sandiego89 on October 12, 2023, 04:06:02 PM
That is incredible! Brilliant.

Dave
Title: Re: Airco DH2. Finished Pics Pg 10.
Post by: Captain Canada on October 12, 2023, 05:27:20 PM
Now that is really something ! Thanks for the laugh as well. Cheers
Title: Re: Airco DH2. Finished Pics Pg 10.
Post by: zenrat on October 13, 2023, 04:26:46 AM
Thank you men.

Title: Re: Airco DH2. Finished Pics Pg 10.
Post by: killnoizer on October 13, 2023, 05:04:02 AM
Quote from: zenrat on October 12, 2023, 02:19:05 AMThanks folks for all the compliments.

I've been thinking about a jet biplane for years (keen reader of the Trigan Empire comic strip) so when I saw the quality of the engine included in the La 200b it just had to be done.

Very fine idea and build , everything works on that for me ,  biplanes are very interesting , that Steam and Dieselpunk style offers a lot of ways  :thumbsup: 
Title: Re: Airco DH2. Finished Pics Pg 10.
Post by: Joe C-P on October 15, 2023, 12:40:52 PM
AI doesn't stand a chance against the proper insanity of a bonkers human mind in a right state boosted by tea and egged on by co-conspirators of equal or greater dementedness. 

Though I expect that tail wouldn't last the first flight, no matter what dope one slathers on.   :wacko:
Title: Re: Airco DH2. Finished Pics Pg 10.
Post by: philp on October 15, 2023, 09:49:09 PM
OK, did a double take when I saw it posted in the Chance to Sway the Whiffies thread so I just had to come take a look.

I love the evacuator seat being produced by ACME but looking at the fuel tank I really don't think it will make it to the end of the runway before running out.

Backstory is also great.

Thanks for the smile.
Title: Re: Airco DH2. Finished Pics Pg 10.
Post by: kitbasher on October 15, 2023, 11:06:33 PM
Fantastic!
Title: Re: Airco DH2. Finished Pics Pg 10.
Post by: Rick Lowe on October 16, 2023, 12:29:07 AM
Quote from: JoeP on October 15, 2023, 12:40:52 PMAI doesn't stand a chance against the proper insanity of a bonkers human mind in a right state boosted by tea and egged on by co-conspirators of equal or greater dementedness. 

I suspect/think/hope you're right... though if AI ever is able to do so, we're in a whole lot more trouble than we are already... ;)
Title: Re: Airco DH2. Finished Pics Pg 10.
Post by: Robomog on December 24, 2023, 01:09:56 AM
Beautifully bonkers build and a great story to go with it

Love it !

 :wub:  :wub:  :wub:
Title: Re: Airco DH2. Finished Pics Pg 10.
Post by: zenrat on December 24, 2023, 03:34:53 AM
Thanks folks.

Phil - I thought that too so I added an extra fuel tank.   ;D