Well last weekend I practically melted both clutch stack bearings. Apperantly the fan hub worked its way up the crankshaft and forced the clutch into the clutch bell, and into both bearings. On the 5th flight for that day, the clutch stack locked up hard. I had to cut the start cup and shaft off as the grub screws acted as if they were welded in place.
Once apart...well it was very ugly inside. The ball bearings were heated so much, some of them crumbled when I tried to move them out of the way. So I ordered most of the stack and this time I am installing the YS120SRX motor...with the Hatori 120-3D pipe.
