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I have an old wheelset with a 16T cog. It's currently a 120mm flipflop hub, and I'm going to be replacing it with a 120mm coaster. The coaster hub that I want doesn't come with a 16T cog (only 14, 15 and 17 for some reason).

Rather than mess around with chain tension, etc, I was wondering if I could just use the cog from the old wheelset on the new hub, or if it's more complicated than that.

More info: old hub is a 32H, 14G, 16T cog. New hub is a velosteel 32H http://www.elegantwheels.net/STORE.html

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can you tell use the model of the new hub. But I don't believe you can use it although most coaster hubs you can switch out the cog. I know you can on a strumey archer S2C –  Will May 8 '14 at 18:59
As stated on that website, you can bolt on any 16t fixie/track cog on there. –  Batman May 8 '14 at 23:49
You have to "mess around with chain tension" every time you remove and install the rear wheel on any single-speed bike. Do you not have a horizontal dropouts? –  whatsisname Feb 25 at 1:19

1 Answer 1

My answer will not answer your question but will give some light on working around it. Instead of replacing the cog or messing around with chain tension you can adjust the length of your chain just right by using one of online chain length calculators and possibly a half link. This is what I did with my vertical dropouts modern frame converted to single speed. No tensioner was used and the chain length is perfect, although I had to add a half link. This is my favorite web site calculator which gives you a graphic view of how far from the perfect length you are and if it's on a tight or loose side, and more options if half link is being used: http://eehouse.org/fixin/formfmu.php.

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The calculator is pointless if the OPs frame has horizontal dropouts. –  whatsisname Feb 25 at 1:20

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