World's Smallest V-12

[scooter]

 

Here

[PR19_Kit]

Most impressive! 

Unusual position for the camshafts though, way down each side of the camshaft, and the individual cylinder heads were different, but superbly done.

[Leading Observer]

Impressive engineering - you can't help but admire his skill

[Captain Canada]

Wow ! That is wild ! Wonder how many ponies she puts out ?

[scooter]

Wow ! That is wild ! Wonder how many ponies she puts out ?

She's only 12cc displacement, so not much

[eatthis]

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  of course it would need to be 4 stroke so i could supercharge it 

[Hobbes]

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/

[zenrat]

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  of course it would need to be 4 stroke so i could supercharge it 

You can supercharge a 2 stroke.

[Hobbes]

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.

[kitnut617]

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  of course it would need to be 4 stroke so i could supercharge it 

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 --

[PR19_Kit]

With a sleeve valve you can get around the problem that Hobbes mentioned, unlike a port timed 2-stroke.

[kitnut617]

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