:blink:
Here (http://youtu.be/3YfTtGCsiD8?list=PLE827E752BB52E1C1)
Most impressive! :thumbsup: :bow:
Unusual position for the camshafts though, way down each side of the camshaft, and the individual cylinder heads were different, but superbly done.
Impressive engineering - you can't help but admire his skill :thumbsup:
Wow ! That is wild ! Wonder how many ponies she puts out ?
Quote from: Captain Canada on November 16, 2014, 01:09:39 PM
Wow ! That is wild ! Wonder how many ponies she puts out ?
She's only 12cc displacement, so not much
seen a few rc v12 motors and theyr all brilliant! in fact when i get round to finishing my rc spitfire the only motor i want in it is a v12 ;D of course it would need to be 4 stroke so i could supercharge it :thumbsup:
This one runs on compressed air.
If you're after a V12 for an RC project, Artus builds a nice one (but it'll have to be a large model): http://www.artus-motor.com/artus-v12-motor/ (http://www.artus-motor.com/artus-v12-motor/)
Quote from: eatthis on November 16, 2014, 01:46:12 PM
seen a few rc v12 motors and theyr all brilliant! in fact when i get round to finishing my rc spitfire the only motor i want in it is a v12 ;D of course it would need to be 4 stroke so i could supercharge it :thumbsup:
You can supercharge a 2 stroke.
IIRC it's really inefficient though; part of the air-fuel mixture gets blown right out the exhaust. Diesel two-stroke engines avoid this because the diesel isn't injected in the inlet trajectory but in the cylinder.
Quote from: zenrat on November 18, 2014, 03:25:17 AM
Quote from: eatthis on November 16, 2014, 01:46:12 PM
seen a few rc v12 motors and theyr all brilliant! in fact when i get round to finishing my rc spitfire the only motor i want in it is a v12 ;D of course it would need to be 4 stroke so i could supercharge it :thumbsup:
You can supercharge a 2 stroke.
The RR Crecy was a supercharged 2-Stroke --- a V-12, sleeve valve 2-Stroke too about the same size as a Merlin. Mind you, it didn't work quite the same way as the modern motorcycle 2-Stroke engines we have today --
With a sleeve valve you can get around the problem that Hobbes mentioned, unlike a port timed 2-stroke.
Even on the Crecy there was un-burnt fuel mix going out the exhaust pipes, RR' solution to that was to add some fresh fuel into the exhaust fumes and re-light it ------ hence the real reason for the ""exhaust turbine"" RR designed for the Crecy.
Suzuki on the other hand had a disc valve on their high powered 2-Strokes which worked similar to the sleeve valve but it was only on the 'intake' side of things, it still had blow-by