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Bicycle Mechanics Broken bottom bracket? Tacoed wheel? If you're having problems with your bicycle, or just need help fixing a flat, drop in here for the latest on bicycle mechanics & bicycle maintenance.

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Old 01-12-08, 07:56 PM   #1
bike_boy
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Help on install of 2 piece crankset

Ok, so I've swapped my 53/39 Shimano crankset for a 50/34 SRAM Rival
2 piece crankset. The Shammino adjustable BB had a large external metal
disc on the drive side. (behind lockring) I believe this disc piece is to help
protect my carbon frame in the event the chain falls off the inner chainring.
Is that correct?

Should I re-use this disc and install on drive side (if wide enough) behind
the GXP external cup of my SRAM Rival crankset? It is a very thin piece of
aluminum.
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Old 01-12-08, 08:07 PM   #2
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It wont hurt to put that in there as added protection from the chain grining on the carbon if it falls off. Should work just fine.
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