[scarletboa]

i never had much of a problem with pinions falling off until today. i got my rc-m motor mount and pinion for my truggy and i managed 2 30 sec. runs. each time, the pinion fell off. also, the teeth are already looking kinda sharp where the pinion and spur made contact. the mesh was good and it is a rc-m pinion. i have had pinions wear away slowly and none that have issues with staying on the shaft.

the rc-m pinion i ordered is decaying very fast. only ~1 min. of runtime and already the teeth are sharp. the only other time this has happened to me is when i used a stainless, non-hardened pinion. it's like my brand new rc-m pinion isn't even the least bit hardened. maybe it's just a fluke?