My bike keeps gear stripping (as me and my mates call it)
Top gear going up hill and the chain will go slack and maybe jump a gear.
Had a quick look this morning and can see on the 5th rear cog their's a bent tooth.
Thinking chain may have stretched also? Bikes not even a year old!!!
Will add pics on me lunch break
could be quite a few things, obviously the bent tooth wont help, but if you're going up hill on a large sproket then you're going to have move than one tooth in contact with the chain.
I'd say it's the rear mech; cables stretch and if it's slack then the mech going to want to shift down to the next sprocket causing the chain to skip and probably the cause of the broken tooth too.
The park tool site has loads of information and anyone serious about cycling should know how to look after their machine.
http://www.parktool.com/blog/repair-helpChain stretch after a year is unlikely but depends on how many miles you've done in the year and if the chains got caught and locked up.
