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Thanks for the advice. I have done what you suggested but while tightening the chain improves the situation and with meticulous adjustment I can almost trust the chain not to misalign on the roller. Over tightening the chain eliminates the misalignment but I fear that will lead to other...

Thanks, the Blackspire roller looks worth trying. I have Rohloff hub gears and by default the drive chain rotates when the bike is wheeled backwards. This wouldn't presumably be the case with derailleur systems. I rode 30 miles yesterday afternoon with no problems until reversing the bike out of...

Hi, Thanks for the suggestion. Fitting a washer as you say would stop the chain coming completely off, but wouldn't stop the chain misaligning across the roller. I feel the problem could be connected to the surface of the roller 'grabbing' the chain and amplifying the slight gravitational...

Hello, I have the same R&M Delite GX Rohloff with the same issue though my chain idler roller stays intact. Wheeling the bike backwards sends the chain out of alignment across the roller ending up with the chain coming off. It has mystified a good local bike repair shop (Exeter) whose only...