sam83
01-20-06, 05:21 PM
From the Shimano website, it appears that the triple brifter ST6603 will not work with a double crank / front deraileur. Is this true? I'm pretty sure that my 9 speed Ultegra (ST6510?) works with either.
Bicycle Mechanics - ST6603 ompatibility
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Rev.Chuck
01-20-06, 07:28 PM
The nine speed is double/triple. The 10 speed is not, according to my stuff.. I have not tried a triple(6603) shifter on a double crank, but I don't think it will throw the right amount to work right.
HillRider
01-20-06, 08:32 PM
The 9-speed Ultegra and 105 were the only Shimano groups (AFAIK) that had shifters that worked with both double and triple cranks. The 8-speed components had specific double or triple shifters and, I believe Shimano has gone back to that for 10-speed.