Repairing Cross-Thr...
 

[Closed] Repairing Cross-Threaded Crank Arms..... relatively widely available/feasible??

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Discovered that my driveside (almost) brandnew SLX crank arm has a badly crossed pedalthread today 🙁 🙁 🙁

Never done this before and am really, really, p*ssed.

Do normal (good) LBSs routinely carry out helicoiling, or Do I need to find a machine shop, or do I need to bin it...?

Doh! Doh! Doh!


 
Posted : 31/01/2010 9:34 pm
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Send it to me and I will rethread or helicoil (what it requires)

Cost £ 10 + post

Will return within 7 days.


 
Posted : 31/01/2010 9:37 pm
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try highpath engineering: www.highpath.net


 
Posted : 31/01/2010 9:37 pm
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Try running the pedal thru from the back - you [i] might[/i] clean the thread up enough to get it usable


 
Posted : 31/01/2010 9:41 pm
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Joe, Brumsgrove, TJ: Thanks for the prompt replies.

JoeBones: YGM

TJ: Thanks, but it is well and truly cheddared.

Bit of an extract from my mail to Joe:
[i]"...
Didn't go to great lengths in my post but, basically, I've never seen a crossthread like it.
I can only think that, in my haste to go for my first 200 metre spin on my new build (on Christmas Eve), I only finger tightened my surrogate (want-to-ride-it-now) pedals.
Since then I have gone no further than 3 miles - each time in normal shoes/boots (ie Not cleated) - as I was just popping to the shop to get brakes bled etc.
Today, within two minutes of my first proper cleated ride (on this bike) I noticed that they were floating strangely.
On inspection, and though inserted 90% of the usable thread, it was clearly on the p*ss.

I can only think that, during my civvy-shoed rides I'd managed to unthread the finger tightened pedals slightly and then, under load, managed to jump a thread before tightening them back up while SPD-pedalling.

The female thread appears more or less reamed.
...."[/i]


 
Posted : 31/01/2010 9:57 pm