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pedal came loose, stripped crankarm threading. HELP???

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pedal came loose, stripped crankarm threading. HELP???

Old 05-31-07, 11:11 PM
  #1  
cycle4life
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pedal came loose, stripped crankarm threading. HELP???

so i was riding along and the pedal apparently was not screwed in all the way because it came loose and eventually stripped the threading inside the right crankarm really bad.....i'm wondering, is that even possible?

i bought the bike used and this was the second or third time i rode it. just plastic platform pedals the guy had thrown on there before he put it up for sale, may not have been put on all the way. so i finally got some clipless and the left screwed in fine, but the right side is way too stripped for the pedal to screw in.

it's a campy veloce double....less than a year old.

1. what's the cheapest way to remedy this problem?

can i get it re-threaded? surely i dont have to buy an entire crankset...

thank you very much in advance
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Old 05-31-07, 11:23 PM
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skingry
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Find someone who can put in one of these:

https://www.emhart.com/products/helicoil.asp
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Old 06-01-07, 12:57 AM
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CRG
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Match a tap to the thread pattern on the pedal and tap it out. Should be good to go.

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Old 06-01-07, 05:52 AM
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kyledr
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JRA... I love it. Your lesson is to check out the bikes you buy. If I buy a bike, I tear it apart and put it back together the day I buy it so I can hopefully return it if there are problems.
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Old 06-01-07, 07:51 AM
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Originally Posted by kyledr
JRA... I love it. Your lesson is to check out the bikes you buy. If I buy a bike, I tear it apart and put it back together the day I buy it so I can hopefully return it if there are problems.
No, you inspect and test ride it before you buy it.
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Old 06-01-07, 09:17 AM
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Originally Posted by cycle4life
so i was riding along and the pedal apparently was not screwed in all the way because it came loose and eventually stripped the threading inside the right crankarm really bad.....i'm wondering, is that even possible?

Happened to me on a one year old classic TA tripple. It was on a supported ride about 30 miles from the car and the support truck never showd up until I had peddaled with one-leg & pushed nearly 12 miles.

I never thought it could unscrew either. The local mechanic says it does happen and it happened to him. He was able to chase new threads, so it was not too bad.

I thought mine were in pretty tight as I had checked it a couple of rides before. Apparently I messed up.

Al
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Old 06-01-07, 11:37 AM
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so basically it can be re-threaded. i'll call around. thanks
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Old 06-01-07, 11:47 AM
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Originally Posted by skingry
Find someone who can put in one of these:

https://www.emhart.com/products/helicoil.asp
+1.

To clarify, I don't think it can simply be rethreaded with a tap, since you're saying it's stripped. If so, presumably there isn't enough metal in there to re-tap for the same size threads. I suppose it might be worth a try, but I wouldn't hold my breath.

The Helicoil creates new threads in a new, larger tapped hole. I think that's what you need.

Last edited by waffenschmidt; 06-01-07 at 11:54 AM.
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Old 06-01-07, 12:02 PM
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kyledr
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Originally Posted by operator
No, you inspect and test ride it before you buy it.
Well that goes without saying. But I never tear a bike apart very much before buying it. I just check the basics and then go from there at home. I do try to ask that they'll allow me to return it if there's a serious mechanical problem.
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