linnix13
Member
i was riding up a hill today doing around 30kph when i heard a loud crunch then the engine just revved and crunched and my back tire locked up. so i pulled in the clutch and stopped and looked at my idling engine, it sounded something fierce! it was grinding and crunchin like mad! so i hit the kill switch and walked home. when i got home i pulled of the clutch cover and saw this(the attached pic) so i thought that mabey it was just the gear that failed but when i pulled the gear of and tried to push the bike the clutch gear rotated about 3/5ths then i heard metal on metal and it jammed. so im asuming that the bushing inside must have failed and that jamed the hole clutch and the little gear was forced to snap. once i pulled the clutch in and idled it i thing that the sound i heard was the bushing and the drive shaft scraping each other and the gear was already mangled. so i will pull the engine apart and try to make my own bushing to replace the broken one and i have a new gear on order from zoom bicycles. i hope to be out and riding again soon. this engine has over 3000km on it that a 230lb guy who loves to go 50kph over curbs and jumps rode. so i did not "baby" this engine. i will report back once i get the engine apart. thanks