Crank arm (non drive side) completely stripped at the pedal opening
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Crank arm (non drive side) completely stripped at the pedal opening
Brand new 105 crank. I rode 20 miles on Friday without a single issue.
Today I get on the bike and start pedaling and the left pedal feels wobbly. Turns out the pedal had stripped every thread on the non drive side crank arm.
Anyone have this happen before? What's been everyones experience with shimano warranty services?
Today I get on the bike and start pedaling and the left pedal feels wobbly. Turns out the pedal had stripped every thread on the non drive side crank arm.
Anyone have this happen before? What's been everyones experience with shimano warranty services?
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Had it happen on a polo bike before with cheap Shimano mountain crankset, I think called Alivio. Mine had been getting bashed for about a year or two. Give Shimano a call or email and see what can be done. GL
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Was the pedal installed tightly? By whom ?
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Both me. The crank is fine. I suspect the pedal came loose and the force caused it to pull away from the threads. I've installed pedals hundreds of times over the years and never had one come loose.
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Bummer. Helicoil repair is usually the most cost-effective means of dealing with this.
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I've seen pedals fall off from not being tightened, and more frequently they can creak when they're snug but not tight enough.
The mechanic accidentally crossthreaded the pedal and ruined the crank arm.
The mechanic accidentally crossthreaded the pedal and ruined the crank arm.
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Im going try *****ing at some poor, unsuspecting shimano customer service rep until they replace it for free.
If that fails, any idea how bad shimano is going to **** me for a new crank arm?
Last edited by JustinNY; 07-29-12 at 07:19 PM.
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Wow. You are person companies HATE dealing with. You installed the pedals loose, and the threading got damaged. It's your fault. What does Shimano have to do with that? As someone who has a clue said above, get a helicoil installed, learn your lesson, and don't harass CSRs because you're a cheapass.
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Wow. You are person companies HATE dealing with. You installed the pedals loose, and the threading got damaged. It's your fault. What does Shimano have to do with that? As someone who has a clue said above, get a helicoil installed, learn your lesson, and don't harass CSRs because you're a cheapass.
Last edited by JustinNY; 07-29-12 at 07:23 PM.
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Just get one side replacement from QBP
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Your local bike shop can get the non drive side. Assuming that Ultegra and 105 have the same Q factor offset, go with that. If you were to put the helicoil in, I would have a machine shop do that where they can insert it with precision.
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The one issue with having a machine shop do the helicoil is that they may not have a left-hand helicoil for the non-drive side arm.
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For example, on your left pedal, to tighten it, you turn it counterclockwise (looking at it from the left side). However, friction in the bearings would tend to turn the spindle clockwise. Likewise, with drive side BB cup is reverse thread so to tighten it, you turn it counter-clockwise (looking from the right side) and bearing friction would tend to turn it clockwise.