Join Date: Apr 2006
Bikes: '96 Tommasini Tecno,'01 Lemond Poprad, '02 Lemond Victoire
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I redid the cable tension, and I feel confident that potential problem spot has been eliminated.
I completely removed and reinstalled the FD. I feel like it is vertically positioned correctly. (~1-2 mm clearance large ring) and is correcly parallel to the chain rings.
I re-adjusted the high and low limit screws to adjust the cage. When I am in the small chain ring, biggest cog, it is right on top of it. When I am in the large chain ring, smallest cog, it is again, right on top.
Although not always flawless, I can shift up and down pretty regularly. I've now discovered that the problem seems to happen independent of shifting. I threw a chain twice (to the outside) on the commute this AM while running the large chain ring and applying heavy torque well after a successful shift.
SOOO... is the problem a bad chain? I need more chain tension? Can I get more chain tension by adjust the RD? Remove a link?