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Old 07-20-10, 03:02 PM   #1
grall1126
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Need Help finding a 135mm 39t inner chainring

I have a outer chainring from FSA 135mm and I am looking for a inner 39t 135mm chainring to complete the set for further use. I contacted FSA through their website and did an extensive search online. Still can't find a FSA 39t chainring 135mm.

I have a 9 speed record setup,????????????????????????????????????

??????

Could I buy a 10 speed inner 39t from FSA for my campy 9 speed system?

Thanks this site is great

any web sites suggested are greatly appreciated
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Old 07-20-10, 03:22 PM   #2
JiveTurkey
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Could I buy a 10 speed inner 39t from FSA for my campy 9 speed system?
Yes. Though some folks are real particular abut matching the number of speeds to the chainring. If you find the spacing is too narrow between chainrings, you might be able to use a super-thin washer between the 39T and each arm on the crank.
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Old 07-20-10, 06:26 PM   #3
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I have a outer chainring from FSA 135mm and I am looking for a inner 39t 135mm chainring to complete the set for further use.
I believe that the smallest chain ring possible for the 135mm BCD is 42 teeth. Anything smaller would create interference between the chain and the chainring bolts.
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Old 07-20-10, 07:35 PM   #4
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I believe that the smallest chain ring possible for the 135mm BCD is 42 teeth. Anything smaller would create interference between the chain and the chainring bolts.
No, 144mm BCD cranks can accommodate rings down to 41T. A 135mm BCD crank ought to be able to use down to 39T: http://sheldonbrown.com/gloss_bo-z.html
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Old 07-20-10, 07:43 PM   #5
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QBP would have after-market chainrings , 130 minimal is 38, 135_ 39, its the Campag New bolt circle for race cranks..
replacements from other sources ..
I have a Campag Race triple its a 50,40,.30, as shipped.. 135, 74 bolt circles..
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Old 07-21-10, 04:59 AM   #6
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thanks, i bought a set of TA Horum chainrings and they work fine on my system, i will look for another inner ring when the time comes, thanks

wouldnt it be easier if everything was the same?
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