• Hmmm! Good call @Jonny69
    I think the routing is correct but I have added more tension to the changer spring. It seems to have improved performance, however it still cannot reach the bottom two cogs.
    Thanks @Big_Block useful info.


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  • So should that rear jockey wheel be up and back like that with the chain in front of it and not swung down and forwards like a modern derailleur? I can’t tell because the pictures online seem to have it either way, but I can’t help feeling it would work better if it was the other way round (assuming the jockey cage is sprung and can swing forwards).

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