Join Date: Apr 2009
Location: New Rochelle, NY
Bikes: too many bikes from 1967 10s (5x2)Frejus to a Sumitomo Ti/Chorus aluminum 10s (10x2), plus one non-susp mtn bike I use as my commuter
Mentioned: 2 Post(s)
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Quoted: 72 Post(s)
To answer the last first, the chainrings on 10s cranksets are closer together than 9s, and much more than 8s. The much more is relative to what's involved, so might only be a bit over 1mm.
Since the rings are closer the FD travel for 10s index is also less. Here's something you might try. Since your lever is a triple, set the outer ring first to shift and trim correctly with the outermost lever position. Then double shift for the inner, using the limit screw to set the inner trim position. This will give you a fair amount of cable slack on the inner, but double shifting back and forth would give you decent functionality.
Another trick that might buy you a bit of added travel, and spare you the double shift routine is to toss out the manual, and intentionally make a common mistake. Attach the cable to the opposite side of the screw (toward the fulcrum). (sequence = pinch bolt-cable-FD arm-fulcrum) This chokes up on the lever increasing the travel for the same cable movement. It usually gets you about 10-15% more travel, so it's dicey whether it's enough, but worth a shot.
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