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Old 05-14-08, 11:54 PM   #1
snowranger
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Chain Ring Spacer?

After I bent my middle chainring, the REI guy replaced the FSA chainring with a Shimano one. Trouble is, my chain often gets caught between the small and middle chainring. REI didn't have an FSA chainring. Will a spacer work to narrow the gap work in this case? Happy Bike to Work Day by the way!
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Old 05-15-08, 12:50 AM   #2
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Do you really need the small chainring?You could adjust your front derailure to not shift to it.Did the bicycle shop test it after you handed them your piggy bank?Did a bloodshot eyed pimple faced kid work on it?
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Old 05-15-08, 08:18 PM   #3
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Maybe I'm missing something but how can a spacer narrow the gap?
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Old 05-15-08, 09:07 PM   #4
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Yeah, the competency level of the average bike technician doesn't inspire my confidence either. If it's not written in their repair book WITH PICTURES they are lost!
I always save chainring spacers - you never know when you're gonna need an 1/8" adjustment. But it would be a total "trial and error" job on a triple crank with mixed brand rings. I've done stuff like this - but it's usually when I've got no other options. Better to find a FSA chainring on ebay or something.
Have you tried your local bicycle salvage? We have one in my hometown, and they have TONS of stuff you can't find anywhere else. And usually for dirt cheap. In fact, I'm going there tomorrow to scrounge up some old rattrap pedals!
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Old 05-16-08, 11:23 AM   #5
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Spacer on the middle ring moves it toward the small ring, hence narrowing the gap. I love the advice that you just avoid using your small ring - very helpful.

I'm a cheap *******, so I'd be headed down to the hardware store to find some washers to plug in there. But it probably wouldn't work. I suspect if you're shimming your middle ring toward the small one, you'd just create a gap between middle and large. I'm with the b-meister - find an FSA ring. Make REI take the old one back.
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Old 05-16-08, 12:50 PM   #6
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the washers from a 10mm rear axle work perfectly for chainring spacers
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Old 05-20-08, 05:25 PM   #7
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Well, it happened again, but this time the chain broke and wrapped around the rear derailleur. The frame was totaled.

I brought it back to REI, and they refunded my money. I bought the Novarra Randonee instead which is better for commuting any way.
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Old 05-20-08, 08:32 PM   #8
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Originally Posted by tellyho View Post
I suspect if you're shimming your middle ring toward the small one, you'd just create a gap between middle and large.
That's exactly what occured to me. Spacers would solve one problem but create a worse one.
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Old 05-21-08, 05:14 AM   #9
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So REI refunded the $30 for a chainring and made a $1000 sale? How nice of them.
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Old 05-21-08, 01:22 PM   #10
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No, they refunded the money for the whole bike and the new rear wheel. There was never any charge for the chain ring.
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Old 05-22-08, 03:48 AM   #11
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No, they refunded the money for the whole bike and the new rear wheel. There was never any charge for the chain ring.
Wow, that WAS nice treatment.
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