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  1. #1
    Senior Member euphoria's Avatar
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    Chain dropping on climbs

    It only seems to happen when my cadence drops below 60 on climbs

    Generic shimano crankset with alivio components

    I am a big dude, could the crank be flexing the chain off the ring?

    I was sent on a rather painful journey back down the climb this morning.

  2. #2
    use your best eye kenhill3's Avatar
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    I take it that it is dropping off the granny?

    Shifting to the little ring often needs a little finesse- don't do it under load; but on the other hand don't let off the pedal pressure suddenly and slam the shifter (also helps to NOT be spinning wildly).

    Also check adjustments. Front derailleur limit may be set too low (too far to the inside). Middle ring indexing may be set too far to the inside.
    "I tell you, We are here on earth to fart around, and don't let anybody tell you any different." - Kurt Vonnegut jr.

  3. #3
    Senior Member euphoria's Avatar
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    hops off the middle ring to the inner also (which also makes me hop off)

    usually the gradients catch me by surprise so I don't even shift and just mash

  4. #4
    use your best eye kenhill3's Avatar
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    Quote Originally Posted by euphoria View Post
    hops off the middle ring to the inner also (which also makes me hop off)

    usually the gradients catch me by surprise so I don't even shift and just mash
    Try the adjustments I suggested.
    "I tell you, We are here on earth to fart around, and don't let anybody tell you any different." - Kurt Vonnegut jr.

  5. #5
    Senior Member euphoria's Avatar
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    alright, thanks.

  6. #6
    unofficial roadie DirtPedalerB's Avatar
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    could be a sligthly bent chain or a bent tooth or something, just check it out. If it's not rubbing the derailer I don't see how a front derailer adjustment would make a difference.

    If your shifting to the granny while climbing , it does require finesse as stated before... they will all jump off on occasion if your mashing and try to dump it to the small ring.
    I only pedal uphill.

  7. #7
    Senior Member EatMyA**'s Avatar
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    Quote Originally Posted by DirtPedalerB View Post
    could be a sligthly bent chain or a bent tooth or something, just check it out. If it's not rubbing the derailer I don't see how a front derailer adjustment would make a difference.

    If your shifting to the granny while climbing , it does require finesse as stated before... they will all jump off on occasion if your mashing and try to dump it to the small ring.
    +1 on the bent chainring or chain. stiff link maybe?

  8. #8
    Senior Member euphoria's Avatar
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    it's pretty much a brand new bike...links are all soft and rings are straight but the chain was virtually dry

    I still want to pin it on crank flex but i'll take it back to the shop anyway

    when I first mentioned it he told me to just take it easy on the bike since he knows I race, but these rides are pretty relaxed

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