Broken teeth

Moonbiker
Moonbiker Posts: 1,706
edited March 2014 in Workshop
Shifting was feeling abit rough so checked cassette & found 4 teeth have broken off it and a few others are damaged. They are all missing from 4 different sprockets but in a row inwards from the smallest one up. damaged ones are nearby the next toorh along from the missing ones.

Ordered a new casette but dunno how the teeth can just break off casette sprockets like that?


It was a less that 1 year old 8 speed shimano casette other teeth don't have hardly any wear as have being replacing chains & trying to keep it clean etc.


*Not hyperglide just broken off completely leaving jagged stumps. :shock:

Comments

  • big_p
    big_p Posts: 565
    I was expecting to see something like this.

    l.jpg
  • keef66
    keef66 Posts: 13,123
    Could the wheel have fallen against something solid when it's been off the bike? Hard to see how that could happen in normal use unless somebody's deliberately damaged it.
  • Monty Dog
    Monty Dog Posts: 20,614
    Are you sure the teeth are broken? - Often they are profiled that way to aid shifting
    Make mine an Italian, with Campagnolo on the side..
  • Moonbiker
    Moonbiker Posts: 1,706
    Wheel hasn't being off the bike for ages, & I haven't dropped the bike.

    Will post a picture
  • andrew_s
    andrew_s Posts: 2,511
    broken teeth:
    DeadSprocket.jpg
    The result of not changing gear for several years

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