Brit..... sounds like you have your specs down pat...... technically you are correct, however by application, this is a land based vehicle, I suppose he uses it 20 to 30 yards at a time roughly,, in an airplane, the higher torque and rpm, would build to perfection, on shortie runs like i can only suppose he makes, I do wonder if full air biting takes place either way????? Getting into the "Power Band" (rpmxpitch=distance traveled) may never happen on his application...... I am truely interested in your oppinion, what do you think??? Captain Crash...