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: 6 Post(s)
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I'll bet two beers that the cable is mounted to the inside (toward the fulcrum) of the anchor bolt. This effectively shortens the FDs lever arm, increasing the cable response ratio beyond the original design spec. and causes over-travel that you're restricting via the outer limit screw.
A bit of over-travel is designed in, but anything beyond that causes what the OP is describing.
BTW- sometimes the same problem is caused by mis-matched components so you have a front derailleur with too much cable response for the levers. If the cable is already to the far side of the pinch bolt, come back and I'll offer some Plan B solutions to spare that left thumb.
An ounce of diagnosis is worth a pound of cure.
“Never argue with an idiot. He will only bring you down to his level and beat you with experience.”, George Carlin
“One accurate measurement is worth a thousand expert opinions”
- Adm Grace Murray Hopper - USN
WARNING, I'm from New York. Thin skinned people should maintain safe distance
Last edited by FBinNY; 12-03-11 at 01:15 AM.