My Posts: All Forum Topic
I don't remember what it did when it was new - but, I disasembled my helicopter the other day to repair clutch lining and noticed their was some metal to metal friction on my os 50 hyper when I turned the shaft (shaft facing up toward the sky while trying to unscrew the propeller nut). Surprised, I than took off the back plate to inspect the inside. I noticed that the crankshaft had a 1mm play. It can move in and out. When I pulled it away from the backplate - no rubbing. when I pushed it towards the back plate - their is rubbing. Looking inside, when the crankshaft moves toward the backplate the connecting ROD hits the crankcase - where I noticed the rubbing occurs. Is that normal?
Finally, when I scew in the clutch bell assembly and the propeller nut - no play and no friction. Is the nut what hold everything in place? I never dissasembled the whole motor before so not sure what happens at the ball bearing area.