Question about Race Face Evolve XC Mountain Bike Crank - Triple

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Brand new Race Face Deus 2010, chain skips

This morning I installed a brand new 2010 Race Face Deus crankset on my Gunnar Rockhound as per the manufacturers instructions (regarding spacers, chainline, etc.) I also installed a new SRAM 9 speed chain (PC 971, with power link). The cassette is Shimano XT (M770), as are the shifters and deraileurs.

When I took the bike for a ride on some local trails the chain started to skip on the chainrings. It happens on both the middle and inner rings. It happens specifically when I'm pushing hard in bumpy sections, especially technical hills. It even threw the chain a few times. Needless to say, I'm frustrated that my brand new equipment is not working! The shifting is perfect and very quick, and the cranks feel great otherwise.

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A new chain and old cassette will do exactly what you're experiencing. The chain skips over the teeth because the profiles of the teeth don't match the distance between the links on the new chain. Look at how the chain sits in the cogs. It should sit in the bottom of the space between each tooth and if you push in on one link the others should not move.

Posted on May 07, 2010


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