Hi guys,

I would just like to find out what the thermal efficiency, TE, of a typical model engine is. (TE = ratio of heat converted into work compared to heat recieved). I know that in a 4-stroke gasoline engine the TE is approx 30%.

i.e. Normal, low compression car -> .26
Racing Car -> .34

What kind of number should I expect from a model engine. This is really important for me as i need to now this as soon as possible for my professor. Are they more or less efficient than a typical two stroke engine??

Thanks,
UCC