May 30, 20205 yr I recently bought a Cyclotricity front wheel hub for my Boardman Hybrid. The problem is that the spokes on the e-wheel rub on my disc brake caliper (see picture). A narrower caliper would (hopefully) solve the problem. Google found me some narrow Alhonga calipers designed (I think) for this purpose but they are only available in the US. Is anyone aware of particularly narrow calipers available in the UK?
May 30, 20205 yr Does the disc rotor line up with the slot in the caliper? - hard to tell from your photo, but it looks a bit off. You could try adding a washer or two to the axle until the spokes clear the caliper AND the rotor lines up. (You may need help to spring the forks depending on how tight the motor is between them).
May 30, 20205 yr I agree with laser man (and thats not because I’m the go to laser welder at work:p) In your picture It looks like, With a disc Fitted It could even rub against the fork leg
May 30, 20205 yr Author No, the (140mm) disc fits OK, however I tried a larger disc and that did rub against the forks. I could try the extra washers solution but I'd have to move the disc out somehow as well??
May 30, 20205 yr you can get disc rotor spacers. https://www.condorcycles.com/products/trp-6-bolt-rotor-spacer?variant=12937452257363
May 30, 20205 yr you can get disc rotor spacers. https://www.condorcycles.com/products/trp-6-bolt-rotor-spacer?variant=12937452257363 Also you can move the caliper a bit if you loosen the bolts.
June 2, 20205 yr Author Does the disc rotor line up with the slot in the caliper? - hard to tell from your photo, but it looks a bit off. You could try adding a washer or two to the axle until the spokes clear the caliper AND the rotor lines up. (You may need help to spring the forks depending on how tight the motor is between them). Just wanted to thank you for this excellent suggestion. After buying the right size washers it worked a treat.
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