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Chain whip which wraps all the way round the sprocket so it can't jump the teeth, wheel butted up to a wall with the tool pointed at the wall and pushing down. If you break the chain before loosening the sprocket, congratulate yourself and rebuild your chain whip with Wippermann 1R8 chain and try again. If you're not heavy enough, get a third party to whack the handle of the chain whip with your dead blow hammer while you hold everything in place, slugging wrench style.
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I'll see if I can find the tutorial I posted a few years ago, has never failed.
gbj_tester
M_V
@Dammit
I have a 7410 hub that had a DA sprocket on it, using a Runwell 12-18l I cannot shift the bigger. Two local bike shops have had a go and both said “cannot, cut it off la”, and the third one that I called said that based on the first two failing they’d be happy to cut it off for me but they’d not bother trying to undo it.
Back in London I’d have clamped the sprocket in my vice and turned the wheel for leverage, but I don’t have a vice here.
What can I do that might shift the sprocket before digging the dremel out?
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