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Overtight bolt

Old 12-05-03, 01:22 AM
  #1  
DANTE
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Overtight bolt

Hi to all.
Yesterday I was tightening the handlebar clamp on my Tassajara and I tightened the vertical bolt too much. I undid it and screwed it in again but now it will only tighten up to a certain limit and then it willgo soft again. The two lateral bolts are ok, and I tried riding the bike without the top bolt and the bike felt ok.
What should I do leave it as it is with the bolt on as tight as it can before it goes soft or do I have to change something expensive??
Thanks for your help.
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Old 12-05-03, 01:39 AM
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roadfix
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are you talking about the stem faceplate bolts??
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Old 12-05-03, 02:26 AM
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Originally Posted by DANTE
What should I do leave it as it is with the bolt on as tight as it can before it goes soft or do I have to change something expensive??
Thanks for your help.
Oh... my...

Go to a bike shop and let the pros look at the stem. Now.

I can't believe someone would willingly ride a bike with one handlebar bolt out. That's crazy. It sounds like you stripped the threads in the stem. A bike shop will likely suggest that you replace the stem. It's not a hugely expensive repair.
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Old 12-05-03, 02:56 AM
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DANTE
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The bolt I am referring to is the only only one which can be seen when you look at the handlebars from above.
Sorry but I do not know the technical term.

Thanks for your advice
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Old 12-05-03, 08:53 AM
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Sounds like the top-cap. This is even cheaper to repair as you simply need a new star-nut installed.

However, if the pinch bolts on the stem are tight, the tension on the top-cap bolt isn't significantly important.

It used to tighten up the headset by compressing the stem/spacers/bearings then you tighten up the pinch bolts on the stem to "lock down" the assembly.

So, after it's all tight, you can back off 1/4 turn on the top cap and it's ALL GOOD!

L8R
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Old 12-09-03, 02:09 AM
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DANTE
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Thanks for you help guys
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Old 12-09-03, 05:52 PM
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Don't the bearings on your headset start to bind after you tighten the cap bolt too much?
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Old 12-10-03, 07:46 AM
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DANTE
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No, even after I tightened the bolt so much that I damaged the thread, everything turned smoothly.

Although the top cap bolt is damaged it can still be tightened to a certain degree. I rode the bike and noticed nothing unusual.

Thanks again
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Old 12-10-03, 09:19 AM
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It's not worth killing yourself over a 40 dollar part

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