1/8 vs 3/32 cogs
- As many know single speed coaster brake bikes and 3 speed bikes used
1/8" wide chains. Some newer bikes use 3/32 (old school 10 speed
size) chains, cogs and sprockets.
I rebuilt a bike this weekend using a coaster brake hub that must of
had a 1/8" cog originally, I used a cog from a 3/32" coaster brake
hub. The result is the cog rattles around on the driver. In theory
we are talking about needing a spacer that is 1/32" thick and of the
proper diameter. Or go back to a 1/8" cog and a 1/8" chain and let
the wider chain run on the thinner 3/32" sprocket.
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