RE: [Geared_hub_bikes] 1/8 vs 3/32 cogs
I've noticed those raised bumps but never linked them with the cog thickness.
I'm guessing my donor hub was just a yet cheaper
model. 1 less manufacturing step on the cog and
just make the driver thinner to match.
At 02:27 PM 4/1/2013, you wrote:
>The 3/32" cogs normally have the spacer built
>in. Often it is just 3 raised bumps that take up
>the additional space. Here is an example from a quick image search:
>on behalf of Rick Paulos
>Sent: Monday, April 01, 2013 11:51 AM
>Subject: [Geared_hub_bikes] 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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