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Alternate Cable Routing (for Derailers)
From WikiPedalia
Shimano originally publicized this as a way to make older Dura-Ace shifters work with newer Shimano derailers, but it is also useful for other applications where you want to make the derailer move slightly farther for each click. This would mainly be when you wanted to use a 9-speed cassette with 10 speed shifters, or 8-speed cassette with 9-speed shifters, or a 7-speed cluster with 8-speed shifters. Alternate cable routing also can make the derailer move less far, the opposite effect.
Details are given in our article on derailer adjustment.
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| Standard Cable Routing (A) | Alternate Cable Routing (B) |


