I'm trying to convert my Jamis Commuter bike with an IGH to a 10 speed derailleur setup.

I've got a bit stuck on the project with the rear derailleur. Here's what I want to verify. Looking at the attached picture, there's definitely a hole for a derailleur hanger right?

From my research thus far I just need to find a compatible derailleur hanger. I assume my best bet (since this model never had a hanger) is to look for other Jamis compatible hangers and see if I can find a match.


  • There is definitely not a hole for a derailleur hanger.
    – Adam Rice
    Commented Apr 17, 2020 at 13:45
  • Good to know. Didn't know quite what I was looking at.
    – ddombrow
    Commented Apr 18, 2020 at 15:17
  • Usually on dropouts that are intended to take a replaceable hanger, there's a distinctive cutout that the hanger fits into, like this. What you've got is an old-school setup that mostly went out of style in the 80s, where the hanger is an afterthought.
    – Adam Rice
    Commented Apr 18, 2020 at 21:08

1 Answer 1


I don't see any holes designed for a derailleur hanger. You should be able to use this type though. It clamps into the horizontal dropout. I've heard them called claw hangers. Don't know if there's a better name for them.

enter image description here

  • Good thing about this approach is that these are the cheapest hangers available. The weird custom ones can cost 10x what these simple ones cost.
    – Criggie
    Commented Apr 17, 2020 at 11:08
  • Awesome thanks for the tip. I hadn't come across these yet.
    – ddombrow
    Commented Apr 18, 2020 at 15:16

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