View Single Post
Old 01-19-08, 11:42 PM
Sheldon Brown
Gone, but not forgotten
Sheldon Brown's Avatar
Join Date: Jul 2002
Location: Newtonville, Massachusetts
Posts: 2,301

Bikes: See:

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 12 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Originally Posted by bobn View Post
I would like to change out the 18 tooth to a 22 tooth sprocket on my 3 speed. There isn't enough room left on the drop outs so the chain will have to be lengthened. Anyone have any idea how many links I would need? Can I add extra links using connector links?
For each tooth added/subtracted to a sprocket, the axle must move 1/8" (3 mm.)

For each complete link (1 inner + 1 outer) the axle moves 1/2" (13 mm).

However, different makes/models of chain sometimes have different thickness pins. As a result, you may not be able to find a matching link.

Chains are cheap, my advice is to replace the present chain along with the sprocket.

Sheldon "Chains" Brown
Sheldon Brown is offline