Author Topic: Boosted Brewster Buffalo  (Read 68 times)

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Offline Scotaidh

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Boosted Brewster Buffalo
« on: Today at 11:08:47 am »
A few weeks ago in one of the aviation discussion threads, someone - it may have been me, I dis-remember - said something about re-engining a Buffalo or a Boomerang with the engine off a Corsair.  Having a Matchbox Buffalo handy with no particular plans for it, I thought I'd have a bash.  After all, to quote my favourite line from Top Gear - How hard could it be?



So I ordered a couple of cheap Corsairs from Squadron with the intention of pillaging their corncobs ... Yeah, no.  The Corsair's engine is of smaller diameter than whatever the Buffa-slow had, so that wouldn't work.  With the recent demise of my tame aeronautical engineer I lost my ready reference for answers to questions like What would happen it a closely-cowled radial was put in a looser cowling, one larger than wot it were designed for, like?

So I decided I just need to stack styrene discs of the correct diameter between the back edge of the cowling and the firewall, to make up the missing thickness/length of the Corsair engine.  I therefore assembled my sheet plastic, circle punch, glue, and the cowled engines to make sure sufficient depth of plastic was achieved. 



At first I used a 1" punch, then figured out I'd be grinding away just about half of each disc 'cos it was too wide/big a diameter.  I needed, apparently, a .75" punch ... now try to find one.  <grrrr!>

So I purchased a 1/2" punch, resigned to much PSR to build out the required thickness.  So there it is - the 1" stack nearby, the first 1/2" stack already in place.  Now, I was going to just glue the stack to the rear of the cowling, but I can't - the cowling is oval, the stack circular.  I'd have had about 1/8" glue area to hold the thing steady ... I had my doubts.  The top of the 1/2" stack was therefore ground away with a dremel-tool so it fits into the cowling, and is full-face glued to the back of the engine disc supplied by the kit.  Therefore more discs are required to make up the distance - that smaller stack is awaiting glue-dryness to be added to the engine assembly.



I've not really planned out how I'm going to lengthen the fuselage behind the cockpit - that'll be fun!  :)
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Offline Leading Observer

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Re: Boosted Brewster Buffalo
« Reply #1 on: Today at 11:14:44 am »
Could the Corsair help there as well?
LO


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Offline Wardukw-NZ

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Re: Boosted Brewster Buffalo
« Reply #2 on: Today at 11:31:52 am »
I like where this is going Scot but i am surprised about the difference in engine sizes..the buffalos is a small little engine compared to the monster the corsair was powered by ..like ya said it could be the close fitting cowls which is where the difference lays .
Ahhhh Clarksons famous last words  ;D..another big Top Gear fan here and me mum too..and shes 87  :lol:
Ive lengthened both aircraft ive stuck on here so if ya need an idea how its done check em out ...theres pics on what i did ..im keeping a close eye on this build cause its very cool and as the old rule goes...there's no replacement for displacement  ;D
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Offline frank2056

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Re: Boosted Brewster Buffalo
« Reply #3 on: Today at 11:45:54 am »
According to Wikipedia, the Wright R-1820 Cyclone in the Buffalo had a diameter: 54.25 in (1,378 mm) vs 52.8 in (1,342 mm) for the Pratt & Whitney R-2800 Double Wasp in the Corsair... so it's probably a minor scale difference/loose cowl.

The main question is what'll happen to the rest of the airframe when you give it an engine with twice the performance...

Offline Wardukw-NZ

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Re: Boosted Brewster Buffalo
« Reply #4 on: Today at 12:21:40 pm »
Frank the airframe will either handle 2000hp ..or it wont..either way its gonna be fun  :wacko:
Hell it'd be bloody fast tho..lets see a Zero keep up with it ..if it holds together long enough :lol:
If it aint broke ,,fix it until it is .
Over kill is often very understated .
I know the voices in my head ain't real but they do come up with some great ideas .

Offline Scotaidh

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Re: Boosted Brewster Buffalo
« Reply #5 on: Today at 12:32:40 pm »
According to Wikipedia, the Wright R-1820 Cyclone in the Buffalo had a diameter: 54.25 in (1,378 mm) vs 52.8 in (1,342 mm) for the Pratt & Whitney R-2800 Double Wasp in the Corsair... so it's probably a minor scale difference/loose cowl.

The main question is what'll happen to the rest of the airframe when you give it an engine with twice the performance...

The Corsair kits are Hobby Boss.  Each consists of almost a dozen pieces, once of which is the cowling with engine molded into it.

To answer your main question - the basic airframe will receive a sprayed overlay of Whiffiam with the highly stressed areas getting actual reinforcement -  triangular fillets of unobtanium welded into place.  It shouldn't be too big a project - we all know how unobtanium literally melds into whiffiam at 350 degrees f ...  ;)

Creative B/S aside, this would be a trial aircraft, a prototype.  As such the air frame would be pretty much hand-built.  Since the air frame is already being stretched to preserve the CG, not to mention being reinforced to carry the much heavier and much 'torquier' engine.  It's going to need more vertical stabilizer area to fly straight and larger control surfaces to manouvre.  The total wing area might be OK, but the wing-loading will be much greater, too.  It would probably be very unpleasant to fly.  :)

But this is just for fun.  :)

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Offline The Rat

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Re: Boosted Brewster Buffalo
« Reply #6 on: Today at 01:12:32 pm »
This should be mega-fun! You might want to enlarge the vertical stabiliser and rudder to account for the extra torque.
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Online buzzbomb

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Re: Boosted Brewster Buffalo
« Reply #7 on: Today at 01:40:17 pm »
Nice.. I am waiting to see how long the snout becomes.. either way, the look of the Buffalo will change. Name change to Pinocchio ?