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sprocket choices...

Started by twangin4u, June 01, 2018, 11:36:23 PM

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twangin4u

June 01, 2018, 11:36:23 PM
I have 17/42t on an 18" wheel. Its time for a new chain and im contemplating changing up sprockets for the heck of it.  Im wondering if I do change and im not happy would adding a tooth or two be possible with the existing chain? Is there enough adjustment for it?

fj-f3a

#1
June 02, 2018, 01:16:35 AM
The centre to centre distance of each link is 5/8" (16mm), therefore 5/16" of adjustment would be required for each additional tooth added or removed.

An 18/40 front/rear should be OK but an 18/38 may require a shorter chain.

I run an 18/38.

What is the circumference of the 18" tyre. An 18/40 or 18/42 may be a good choice.
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