Old 12-13-15, 11:11 AM
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Originally Posted by Andy_K View Post
I was poking around Google, and I stumbled across this article from Park Tool:

Travel Agent? Installation and Adjustment - Park Tool

The article points to an obvious simplification of the problem: measure the distance from the pivot point to the cable anchor (more or less) and you can calculate the cable pull from that. The 5700/6700 levers complicated things a bit in the the cable rests on part of the lever behind where it is anchored, so I had to measure to the point where the cable is free to move independent of the lever body.
Can you get your hands on a 5800/6800/9000 levers for comparison with newest shifters? I'm wondering if you can also do the reverse and measure the distance from the pivot to the cable pull on the caliper, which should give you the total mechanical advantage.

It's interesting that SRAM is slightly different but still close enough for compatibility.
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