Tiny Turbo for car.

[S4E Jord]

Hi Guys,

I have a 1/5th scale FG car which is fast but I have always loved the idea of popping a turbo on it. I have had a little look on the net and came across a forum where they saying that you can get hold of a very small turbo from a Diesel Generator. Apparently you can hold the whole thing in your hand. it’s very small. I haven’t seen any pictures of these.

If you guys can think of anything that may help it would be much appreciated!

It needs to be as small as possible.

Thanks in advance.

Jordan.

[love machine]

[S4E Jord]

love machine said:

lol, but seriously if anyone can help it would be much appreciated

[GiorgioGT]

the new fiat bravo has a turbo the size of a 2p if thats any use to you

[Davi]

Have a look at rc heli shops, you can get turbo's and superchargers for the RC heli's - not a great deal bigger than a £2 coin.

I've yet to try one personally, I'll get around to it eventually, fun to play with no doubt, but I doubt it's abilities somewhat.

Edited by Davi on Friday 12th October 12:26

[Roop]

Someone fitted one to a .21 sized on road car complete with tiny intercooler...! remember reading a review on a forum somewhere. Not sure of an FG (26cc ish...?) sized one.

[S4E Jord]

iv had a good look over the net and some people have created one from scratch...

not really too sure what to do now...

[Ultra Violent]

Tried this before on a kyosho GP10. There was a engine fan cooling option that blasted air over the engine head driven from the drive shaft of the engine.

I tried to fashion a compressor wheel to replace the fan wheel. 2 problems. It was too hard to make the compressor from scratch, and what little compression I got caused issues with fueling.

[bramley]

I read about someone that supercharged a small nitro engine from an rc car and it came in for lots of criticism due to the way the inlet and exhaust gases worked. I can't remember the exact detail but the gist of it was that it was impossible to get any additional air into the cylinder (beyond that which naturally was present) as the exhaust gas port was 'open' right up until the moment of ignition so the air pressure in the cylinder couldn't be raised.

Sorry - that probably makes no sense!

[PJR]

bramley said:

I read about someone that supercharged a small nitro engine from an rc car and it came in for lots of criticism due to the way the inlet and exhaust gases worked. I can't remember the exact detail but the gist of it was that it was impossible to get any additional air into the cylinder (beyond that which naturally was present) as the exhaust gas port was 'open' right up until the moment of ignition so the air pressure in the cylinder couldn't be raised.

Sorry - that probably makes no sense!

I think what you are getting at, is the inherent problem with force feeding a 2 stroke engine.. The additional pressure from the charger just blows a lot of the fuel and air mix straight back out the exhaust port, completely unburned. As both inlet and exhaust are open for quite some time on a 2 stroke motor (Hence why you dont see so many 2 stroke motors on motorbikes now, as they are crap for emissions). And again, as both ports stay open simultaneously for a considerable time, you cant maintain charge pressure in the cylinder either. So force feeding becomes largely pointless for 2 stroke engines.
Im no engineer either, but thats about the strength of it (I think!). 4 stroke motors can take a charger no problem though of course.

P,

[Davi]

whilst true there are issues with the ports, it is perfectly possible to turbo a 2 stroke, it's just hellishly difficult compared to a four stroke - a google will turn up plenty of references for you.