Loose Shaft?
Hello,
I am part of the Milwaukee School of Engineering SAE Aero competition team. Our school has an old Jett 90 that we are using for propeller testing. The engine was running fine but noticed that the spinner is stuck to the shaft. The shaft had to be screwed directly into the engine. Is this normal? Most R/C engines we have worked with the spinner comes off not the shaft. We were testing it tonight and for some reason when we applied the electric starter the shaft spun right off. No matter how tight we try to screw the shaft on it continues to fly off. We checked for hydro-lock and it is not the case. After looking at the exploded view of the engine it looks like there is a locking cone, is this the issue? Any help would be greatly appreciated on keeping the shaft in place.
Thanks,
Brad