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HomeAircraftHelicopterGasser Model RC HelicoptersOther › Fuel injection on a gasser, Why? Why not? good? bad? Ugly?
05-02-2010 11:48 PM  8 years agoPost 1

rrElite Veteran

All over the place!

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Just wondering why there isn't fuel injection for gassers invented yet? Or if already invented, the good bad of it? Anyone know? Has it already been tried and failed?

Which is worse, ignorance or apathy? I don't know and I don't care!

05-03-2010 01:01 AM  8 years agoPost 2
Carey Shurley

rrElite Veteran

Orlando, FL - USA

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OS had (and maybe still has) a fuel injection system for some of their glow motors.

It was found to not work so well on helicopters, mostly because the mixture MAP needed to be reworked for helicopters.

I suspect both fuel injection and supercharging are good ideas but then you're just piling on more weight than the HP gain is going to do you any good with.

05-03-2010 02:28 AM  8 years agoPost 3


Boston MA

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Weight, added complexity, and most importantly, cost. You'd have to sell a lot of units just to recover the development and tooling costs and still keep the price reasonable.

If there were some compelling reason it would probably happen, short of that, carbs are cheap and they work.

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Some obsolete nitro helis too...

05-03-2010 04:41 AM  8 years agoPost 4
Justin Stuart (RIP)


Plano, Texas

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Back in the say, there were limits on the size of the airplane you could fly in competition. You could fly a .61 two stroke or a 1.20 4-stroke. So what OS and YS did was to try and squeeze every ounce of performance out of that particular displacement. Thus they developed superchargers and fuel injectors. But now days, things are different. There is not the displacement limit, so if someone wants more power, they just need to buy a bigger engine.

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05-03-2010 01:27 PM  8 years agoPost 5


La Vista, NE.

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I've thought the exact same thing. EFI would solve a number of problems we have with gassers, primarily getting the mixture lean enough for good power without cooking the engine.

The only reason I can see it doesn't happen is money.

Perhaps we could get something like a carbsmart but run it off an EGT sensor.

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