RE: Testing the new NV (Norvel) .40 size (6.5cc) gasoline glow engine
Now a longer prop stud is not really needed, as the engines used the standard prop stud for many years and no one considered it a problem. So it is not really a problem. But I made myself a longer 6mm propeller shaft stud for the NV GX 40 engine. You can either make one using a lathe or buy a threaded stud online from many sources and cut it down to length as needed. This is just a personal preference of mine for using a spinner and propeller on the engine.