Ps, for sport flying, you have no business turning north of 18K . Most .40 and smaller two strokes shouldn't be much over 16k, and many produce the most torque at around 12-14k, or even lower. The highest HP readings are usually up over 16k. Most 4 stokes should be kept under 10k, with the best torque around 8. (You YS guys, keep it to yourself , there are, of course, exceptions).

The peak HP and torque for an engine rarely occur at the same RPM. Most planes fly better at the peak torque number, which is usually at a lower RPM with a larger prop.

btw, this is why the HP readings listed by engine manufacturers are mostly BS, they put on really small props to wind the engine way up and get those numbers. But there isn't a much thrust being produced at that point.

Anyone have torque and HP curves available for some engine?