Upgrading a Crankset Compatibility

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10-10-16 | 02:29 PM

jorglueke

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From: Woodbury, MN

Bikes: 2006 Trek Pilot 1.2, 1972 Schwinn SS

Upgrading a Crankset Compatibility

I would like to swap out a Bontrager crank and three front chain rings on a 10 speed bike with Shimano Ultegra. Will the two chainrings work or will I also need a new front derailleur? Will both 10 and 11 speed chainrings work with a 10 speed cassette rear derailleur?

10-10-16 | 02:43 PM

Homebrew01

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From: Ffld Cnty Connecticut

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Sounds to me like it should work. Just a minor FD adjustment to limit the travel.

For the most part, the front end of a drivetrain doesn't care much about the rear.
(Except in oddball cases such as an old-school 5 speed freewheel and wide chain with a narrow front dereailleur and crankset.)

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10-10-16 | 09:44 PM

turkey9186

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Yes, you can use 11 chain rings with 9 and 10 speed drive train. The front triple derailleur should work, but the limits will need to be adjusted. 9 speed derailleurs will not work with 10 and 11 speed drive train.