What would cause this?

Originally Posted by brushlessboy16

I just got done running a bout a pack and a half through my truggy.. its got a hardened steel spur gear... well lets just say the spur gear won..


This gear is of unknown origin, i doubt it is hardened. but any idea what would cause the gear to be sharpened like this?

I have seen some sprockets in my line of work that look like that but that was after a couple of years of service...IMO its just wear....