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Chain slipping off cassette. Won’t drive in any gear.

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  • January 6, 2021 at 2:30 pm #31353
    Reddy90

    Hi all,

    I am still fairly new to cycling. My bike has been in the shed for a while and I’ve now taken it indoors to use on my turbo trainer( direct drive)
    I have set the bike up on the trainer, however when I try to pedal the chain just starts slipping and come off the cassette, I have tried setting it on each of the gears the chain just kind of grinds and slips off eventually at the bottom.I can’t seem to get it to actually provide any drive. This is the same if I have the bike set up as or as not on the trainer.

    Any advice or suggestions on how to fix this would be much appreciated.

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  • January 7, 2021 at 8:11 pm #974957
    0
    don simon fbpe

    I can’t get my head around

    I can’t get my head around what has happened, but glad that it’s sorted.

    January 7, 2021 at 2:46 pm #974955
    0
    Reddy90

    Update: tahks for all your
    Update: thanks for all your help, I have changed the cassette on the turbo trainer to one that is compatible with my chain. This issue with not being able to change gears has been solved, the internal rachet was stuck, stopping it from changing gears this is now being fixed

    January 7, 2021 at 7:38 am #974953
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    don simon fbpe

    That’s fair enough, as I said

    That’s fair enough, as I said, I couldn’t see the video and was going off the OP’s description. Equally, those that have seen the video are in agreement that it’s a chain cassette incompatibility thing. Adding that the OP has said that the trainer cassette has more gears than the bike, they have identified the first problem.

    January 7, 2021 at 12:40 am #974951
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    AlsoSomniloquism

    The video doesn’t show that

    The video doesn’t show that the deraileur pulling the chain off. It just looks like the chain is not seeting in the cassette due to being too big and just riding on the very tips of the teeth. If the bike is setup for 9’s rather then 11 the very bottom ones might be close enough to cause the slip. 

    Edit: Looking at the screw and cable location, definitely not an 11 speed shimano and closer to Sora. 

    January 6, 2021 at 6:25 pm #974949
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    hawkinspeter

    Looks like a chain/cassette

    Looks like a chain/cassette mismatch to me.

    January 6, 2021 at 6:14 pm #974947
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    don simon fbpe

    Different cassettes is one

    Different cassettes is one problem.

    If you can put the cassette from the bike on then post a nice long video of the bike cassette on the trainer. That’d be nice.

    January 6, 2021 at 6:08 pm #974945
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    AlsoSomniloquism

    Looking at the video I agree

    Looking at the video I agree with Nige. You probably have a 9-10 speed bike (look for Sora or Tiagra on the levers) and an 11 speed cassette in the trainer. 

    You might have damaged the chain using it on the Trainer which is why it now screws up on the wheel. 

    January 6, 2021 at 6:08 pm #974933
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    Reddy90

    I belive the one on the
    I belive the one on the trainer has more gears than the one on the back wheel. Will need to double check, but the same issue was happening with the back wheel but 2 of the gears did work.

    Will try changing the cassettes over and see if that helps.

    January 6, 2021 at 6:04 pm #974943
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    Hirsute

    It’s quite a short clip but I

    It’s quite a short clip but I’m not convinced the chain engages with the sprockets and is not compatible – see the other replies from ian and nigel along the same lines.

    January 6, 2021 at 6:02 pm #974941
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    Inder

    Reddy90 wrote:

    [quote=Reddy90]I’ve added a picture of the set up If it helps here a little k to a video on Google drive showing the slipping https://drive.google.com/file/d/1XLoNv02BMwznmdmN4gbYbJ6LordX1qkU/view?usp=drivesdk%5B/quote%5D

    The smallest sprocket looks very close to the dropout. Is the cassette the correct one for the freehub body on the trainer? If so, is it definitely seated on the freehub body properly? 

    January 6, 2021 at 5:50 pm #974939
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    Anonymous

    Chains are different widths

    Chains are different widths depending on the cassette they go on, you can’t mix and match different gears, e.g. a 9 speed chain wont fit an 11 speed cassette

    January 6, 2021 at 5:44 pm #974937
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    iandusud

    That looks like an 11 speed

    That looks like an 11 speed cassette. Are you sure you’re using an 11 speed chain? Have you adjusted the indexing to match your trainer? 

    January 6, 2021 at 5:42 pm #974935
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    don simon fbpe

    That’s a second choice,

    That’s a second choice, knackered chain and new cassette. But why is the derailleur pulling the chain off the cassette?

    January 6, 2021 at 5:37 pm #974931
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    Hirsute

    I saw the video so maybe they

    I saw the video so maybe they changed the permissions.

    Chain is incompatible or worn is my suggestion.

    January 6, 2021 at 5:35 pm #974929
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    Anonymous

    Is the cassette the same type

    Is the cassette the same type/number of gears as the one on your back wheel? Personally I’d stick the one from the back wheel on the turbo trainer to see if it still does it.

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