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Old 07-05-05, 06:23 AM   #1
Dan0930
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9 speed crank 7 speed drive train?

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?
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Old 07-05-05, 06:27 AM   #2
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Originally Posted by Dan0930
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.
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Old 07-05-05, 09:54 AM   #3
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Probably need a new BB (square taper > Octalink).
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Old 07-05-05, 02:36 PM   #4
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Probably need a new BB (square taper > Octalink).
No probably.It's a given.
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Old 07-05-05, 07:30 PM   #5
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No probably.It's a given.
Being diplomatic for a change; you might want to give it a try...

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