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Tandem Cycling A bicycle built for two. Want to find out more about this wonderful world of tandems? Check out this forum to talk with other tandem enthusiasts. Captains and stokers welcome!

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Old 08-15-05, 03:14 PM   #1
A Hansen
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Join Date: Jul 2003
Location: No. AZ
Posts: 7
FSA chainrings-9 vs. 10 sp.

I have a 9 speed triple crank on our tandem mated to 10 sp Campy in the rear. It works fine but I want to change gearing with some smaller chainrings. Will 10 sp rings mount onto the crank the same?
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Old 08-15-05, 07:12 PM   #2
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Join Date: Jun 2004
Location: Towson, MD
Bikes: 2001 Look KG 241, 1989 Specialized Stump Jumper Comp, 1986 Gatane Performanc
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You are leaving out a lot of info but I will guess..

If it is FSA crank it should have 130 mm bolt circle for the large and middle ring and 74 mm bolt circle for the granny ring. Should be the same as Shimano. Campy rings are 135 mm bolt circle for the large and middle and also 74 mm for the granny. You could use 10 speed Shimano rings or some other 9/10 aftermarket rings I am sure.

Here is a pile of FSA chain rings - lots 9/10 compatible.
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