“We don’t need no badges”
Joined: Sep 2019
Posts: 2,602
Likes: 1,626
From: SF Bay Area
Bikes: 1981 Holdsworth Special, 1993 C-dale MT3000 & 1996 F700CAD3, 2018 & 2019 Cervelo R3’s & 2022 R5, JustGo Runt, Ridley Oval, Kickr Bike 8-)
Looks like your choice of chain is too narrow between the inner plates.
A traditional single speed cog needs an 1/8” chain.
Multi-speed chains got narrower, in order to fit multiple cogs in a limited space (width).
Barry
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