RE: Looking for advice - fast plane
My experience with JETT vs Nelson QM40 engines is that the Jett is a stronger motor, but much more finicky. I've run both, and the thing I liked best about the Nelson was I could "set it and forget it". The JETT I was always tweaking the needle which was frustrating. There are probably guys out there that have never had to do that, and I wasn't competing, just going fast, but for me the Nelson was more user friendly and consistent. A couple friends of mine that fly QM40 have said the same thing, if they could get the ease of operation that the Nelson has with the power of the JETT that would be the ultimate engine.