Bicycle Mechanics - 9 speed crank 7 speed drive train?

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Dan0930
07-05-05, 06:23 AM
would it be compatible to use a 9 speed ultegra crank with an old 105 7 speed drive train? I bought a bike with a 105 drive train 7 speed...however the cranks were ofmega 53-42 and its a little steep for where i ride. so a buddy tossed me a set of ultegra cranks to put on and we were wondering if it was a compatible system?

sydney
07-05-05, 06:27 AM
would it be compatible to use a 9 speed ultegra crank with an old 105 7 speed drive train? I bought a bike with a 105 drive train 7 speed...however the cranks were ofmega 53-42 and its a little steep for where i ride. so a buddy tossed me a set of ultegra cranks to put on and we were wondering if it was a compatible system?it works.
rmfnla
07-05-05, 09:54 AM
Probably need a new BB (square taper > Octalink).

sydney
07-05-05, 02:36 PM
Probably need a new BB (square taper > Octalink).No probably.It's a given.
rmfnla
07-05-05, 07:30 PM
No probably.It's a given.

Being diplomatic for a change; you might want to give it a try...

;)