• Hi,

    My friend shagged his old chainring (probably 42T) so I bought him a new one (43T). He managed to fit the new ring but he can't get the chain back on.

    I showed him how to use a chain tool and told him to take out/put in a few chain elements. He tried it but says that it is either so tight he can't get it back on the ring or so slack it's hitting against the frame all the time and comes off constantly.

    Is that possible? Or is he doing it wrong?

    Cheers
    Lenni

    EDIT: The bike has vertical dropouts.

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