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General Category >> Technical >> SRAM 10-sp Cassette Problems
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Message started by jayg on Jun 22^nd, 2011, 9:33pm

Title: SRAM 10-sp Cassette Problems
Post by jayg on Jun 22^nd, 2011, 9:33pm

My Musashi has a SRAM Rival 10-sp group to include a 1070, 11-32 cassette installed on it. Smoothest shifting cycle I own with this cassette. I prefer a close-ratio cassette, so I installed a SRAM 1070, 12-27. Result - worst shifting bike I own. The chain will not ramp up on the 27T cog, even if I adjust the derailleur limit screw out far enough for the cage to contact the spokes. Thought the problem might be the new
Velocity rear wheel I recently installed. Installed the 11-32 cassette on the Velocity wheel, and the result was smooth shifting. Since both cassettes are 1070 Series, their designs should be the same. The only conclusion I can come to is the 12-27 cassette is defective. Anybody ever experienced a similar problem?

I've experienced some shifting problems with cheap cassettes, but this was not a cheap cassette.
I'm going to have to use it as a paperweight, because I shredded the Performance Cycle receipt. [smiley=sad.gif]

Title: Re: SRAM 10-sp Cassette Problems
Post by johnnybent on Jun 22^nd, 2011, 10:34pm

Same everything except ratio...missing spacer? I had a shifter problem once on a road bike and found the cassette was not tighened enough.

Title: Re: SRAM 10-sp Cassette Problems
Post by TonyWard on Jun 23^rd, 2011, 5:49am

Did you buy it in the store? Last time I was in there they told me if you give your personal info you don't need a receipt for returns.

Title: Re: SRAM 10-sp Cassette Problems
Post by jayg on Jun 23^rd, 2011, 7:40am

johnnybent wrote:

Same everything except ratio...missing spacer? I had a shifter problem once on a road bike and found the cassette was not tighened enough.

No spacer was missing. And, I torqued the the cassette lock ring to the recommended torque.

Title: Re: SRAM 10-sp Cassette Problems
Post by FlyingLaZBoy on Jun 23^rd, 2011, 7:44am

They may well have you "in their system" to be able to bring up the purchase on the computer/register.... Worth a shot...

Title: Re: SRAM 10-sp Cassette Problems
Post by jayg on Jun 23^rd, 2011, 4:28pm

TonyWard wrote:

Did you buy it in the store? Last time I was in there they told me if you give your personal info you don't need a receipt for returns.

Yes, I've purchased a lot of stuff there and am in their computer.

Title: Re: SRAM 10-sp Cassette Problems
Post by jayg on Jun 23^rd, 2011, 4:31pm

FlyingLaZBoy wrote:

They may well have you "in their system" to be able to bring up the purchase on the computer/register.... Worth a shot...

I'm in their computer. I'll clean the cassette up, take it back and see what happens.

Title: Re: SRAM 10-sp Cassette Problems
Post by jayg on Jun 26^th, 2011, 4:42pm

Took the cassette back to Performance and was directed to one of their mechanics. I described the problem and he told me the derailleur's B-screw needed to be backed out all the way. He said if I brought the bike in, he would fix the problem "in less than 10 minutes". Not being one that easily accepts defeat, I just went out and installed the cassette, installed the wheel, and backed out the B-screw and adjusted the limit screws and cable barrel on the derailleur. Success! [smiley=pepper.gif] Cassette - not the problem. Home mechanic - the problem. :)