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  1. #1
    Chairman of the Bored catatonic's Avatar
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    huh?
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    Ring Ring, Ring Ring, the bell went Ring Ring Ring.

  2. #2
    Southern Gentleman sabaka's Avatar
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    You need a new cassette.

  3. #3
    Senior Member
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    And here is the text (there were database issues while I was trying to post this):

    I have a DB Topanga Comp '05. This is my 1st yr riding. I recently replaced the chain with a new PC951. I have read about some who replace cassettes and chain rings when they buy a new chain, but I didn't think mine would have that much wear yet. On my 1st ride with the new chain, when under load (I am ~ 220 Lbs) up hills, accelerating, etc, I had much slippage, not just 1-2 links but the entire chain slipping around the smaller cogs in the cassette. Is it possible that, even though I haven't had the bike long, that I need to replace the cassette, since I am fairly hard on it? Have I just answered my own question?

    And since I am in my middle ring 98% of the time, should I replace that as well? It seems that the chainring would have a harder time slipping than the small cogs.

    After writing this, it begs another question. Should I attempt to spread out my riding more evenly over all 3 chainrings, or should I just plan on replacing my middle chain ring more often. It seems that if I wear my chain and middle ring together, then when I go to use the big or small chainring, the chain would be too stretched for them.

    Thanks

  4. #4
    Custom User Title kenleekenlee's Avatar
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    Jun 2005
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    Can you take a picture of your cassette/chainring? That might help determine if it is badly worn or not. Also, when you installed your new chain, did you check the length?

  5. #5
    Senior Member Brian Ratliff's Avatar
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    If there was significant wear on the chain you replaced (over 1/16" stretch over a foot long section of chain), then the cassette is too worn for a new chain. Don't worry about the chainring. The chainrings will wear, but slippage is not an issue because so many teeth are engaged at one time so the forces on the teeth are lower. Ride in the gear which is most comfortable for the terrain you are on at the moment.

    Since your chain is skipping, you already know that the cogset is overworn. Replacing it will eliminate the skipping chain.
    Cat 2 Track, Cat 3 Road.
    "If you’re new enough [to racing] that you would ask such question, then i would hazard a guess that if you just made up a workout that sounded hard to do, and did it, you’d probably get faster." --the tiniest sprinter

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