1

My bike has an 8-speed nexus hub and the plastic adjustment screw broke. Now I can't adjust the cable anymore and can't use some of the gears. My question is, can I use a normal thumb shifter on my nexus 8 speed since the nexus shifter (internal gear bike in general) is very uncommon where I live and I don't want to pay for the ridiculous price of shipping fee plus tax on my old bike.

1

You could cannibalize a barrel adjuster (I think that's the broken bit if I understand your description) from an old shifter or derailleur. For most of the time these adjusters have identical threading. Try your LBS, they may have a parts bin with bits and pieces.

2
  • oh yeah, why didn't I think about that. Thanks for the suggestion!
    – awe 1212
    Jul 12 at 15:10
  • @awe1212 can you please add a photo of your broken shifter to the question? We may be able to make useful suggestions. From the text, this sounds fixable.
    – Criggie
    Jul 13 at 22:49
1

Answer: NO

I did the opposite once - bought an 8 speed Nexus shifter that was super-cheap, for use on an 8 speed derailler. The cable pull of a nexus/alfine shifter is different to that of a conventional shifter, so clicks will not line up with gears.

You might think that a friction shifter would let you get it in the right place, but since the IGH is internal you won't hear the gears meshing/clattering if wrong, so there's no way to know if you're in-gear properly or just riding on the corners of teeth. This is very bad for the gears.

Your two options are to replace the shifter with a working one, or repair your existing shifter as per @carel's advice (which would be my first option)

As for sourcing parts, I've had good luck buying "Shimano" parts from aliexpress. I bought a chain tensioner from the LBS, but they renegged saying it was no longer available. So I found it for 1/4 the quoted cost, and its identical to the original. Time to ship can be high, so maybe order one and while waiting, try to repair your existing shifter.

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.