RE: Best engine
I don't know the horsepower of nelson and jett engines, anyway, the ops I have turns a 7.8*7 at about 22.000 rpm. I was interested in the ST g.500 but I am not able to find them anymore. I had a jett quickee .40 but it had a lot of troubles: impossible to idle well, it always stopped in flight and it was less powerful than a G500 of a my friend.