Bicycle Mechanics - Cannondale chainring offset with isis bb

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rydeon
11-04-04, 05:38 AM
I have a cannondale sport 800/triple with isis/truvativ set-up. The problem is the cross chain condition that exhists with the stock 118 mm bb. This places the chainrings too far out which causes a severe cross chain situation under all but higher speed riding (52/12-17). A 113 bb bracket would help but will it fit on my bike and has anyone addressed this problem? (other than a switch to a double) Thanks for any suggestions!

sydney
11-04-04, 06:37 AM
I have a cannondale sport 800/triple with isis/truvativ set-up. The problem is the cross chain condition that exhists with the stock 118 mm bb. This places the chainrings too far out which causes a severe cross chain situation under all but higher speed riding (52/12-17). A 113 bb bracket would help but will it fit on my bike and has anyone addressed this problem? (other than a switch to a double) Thanks for any suggestions!If you have enough chainstay clearance for the crank to move in about 2.5mm it will fit. Check the FD to be sure it can also move in further to be able to shift to the smll ring.