Trinity Impulse engine help
Hey guys i found my old school trinity reflex in my garage brand new, I just built it and im looking for an engine. It says it needs a threaded type shaft, and iv looked around and cant seem to find a nice threaded shaft engine. Can someone recommend me one? Also, how hard is it to change a sg shaft engine to a threaded, is it even possible. Sry for the noob ?s, im fairly new to the nitro scene.