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Red 10sp Crank failure

Posted: Wed Jun 19, 2019 6:09 am
by ducman
Question, this is the 3rd time i have a Sram Red Crank failing at the pedal insert in the carbon crank arm. Before (2years ago) i got a replacement under warranty.
Anybody tried it recently to reach out to Sram with this problem?
I can't even find an email adress for tech suport... :?

Are there, reasonbly light, alternatives (alu?) For 50/34 10sp BB30 cranks?

Red 10sp Crank failure

Posted: Wed Jun 19, 2019 6:09 am
by Weenie

Re: Red 10sp Crank failure

Posted: Wed Jun 19, 2019 10:34 am
by alcatraz
That's odd. How big a guy are you? Doing a lot of sprinting? Are those exogram cranks?

Maybe a cannondale crank would satisfy your stiffness and full alloy requirement without adding a lot of weight.

If weight isn't an issue look at Fsa energy cranks or maybe sram rival. They are alloy.

Cannondale have cheaper bb30 cranks too.

Re: Red 10sp Crank failure

Posted: Fri Jun 21, 2019 5:57 am
by ducman
I'm 63kg... its always the pedal inserts in the crank carbon arm that come loose...
They are plenty stiff enough for me, but always fail after 1 or to seasons... 😔

Cdale alu crank arent cheap.... but im gonna look for one 2nd hand...

Re: Red 10sp Crank failure

Posted: Fri Jun 21, 2019 6:11 am
by alcatraz
It sounds remarkable to have it happen three times.

Maybe there is something in your environment breaking down whatever bonding agent they use to hold those inserts in place.

If I were the manufacturer I'd like to investigate the matter to improve the product.

Re: Red 10sp Crank failure

Posted: Fri Jun 21, 2019 6:45 am
by pdlpsher1
Sram made a running change in the design to mitigate the problem. I used to own the earlier, non-reinforced version but never had any problems. The earlier version is some 20-30 grams lighter than the revised version. I wonder which version you have.

Re: Red 10sp Crank failure

Posted: Mon Jun 24, 2019 6:07 am
by ducman
Gonna ask my lbs this week, you never know...

Re: Red 10sp Crank failure

Posted: Mon Jun 24, 2019 9:00 am
by alcatraz
What side broke these 3 times? Always the same?

Re: Red 10sp Crank failure

Posted: Mon Jun 24, 2019 9:00 am
by Weenie