Join Date: May 2007
Location: New York metro area
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dropping chain - doomed to do it?
I'd appreciate advice on this persistent problem.
Am I doomed to drop the chain if 3 three conditions are present:
1. chain on inside (largest) 1 or two rear cogs
2. I run my chain tension loose as specified by Sheldon Borwn (large large while skipping derailleur and adding 1 link (3 pins)).
3. panic shift front - shifting the front derailleur from the large chain ring to the small in one complete depressing of the front brifter lever.
I realize that none of the 3 probably help to avoid dropping the chain and I try not to panic shift but sholdn't the proper front derailleur setting eliminate this problem? How much is the problem influenced by chain tension. Also, I find the drive train behaves entirely differently when under load than on the work stand. load introduces more hesitation so this has been challenging to troubleshoot.
I have been periodically dropping my chain off the inside of the small ring -while using the inside (largest) 1 or 2 rear cogs - when shifting from the large to the small chain ring. I have adjusted both the inside and outside positions (for small and large rings) of the front derailleur to be as close as possible without rubbing but the problem persists.
Last edited by Thirstyman; 06-09-08 at 05:39 AM.