Scratched handle bars weakened?
#1
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From: Utah
Bikes: '88 Trek 1200, '91 Trek 1400
Scratched handle bars weakened?
Okay, one more question.
I put a new quill stem on my bike, and had to slide the bars through the clamp to get it on. I was getting ready to tape the bars up and noticed I scratched them a bit by the clamp. 'No biggie' I thought. I'd just tape to the stem, or not pay attention to them.
Then I read that a scratch in your handle bars can weaken them to the point of eventual failure. They're not super deep, but I can feel them with my finger nail and there are multiple scratches.
I know it's on the pretty part, but I can deal with that if they're not going to dump me on my ass at some point.
Am I screwed?
Thanks.
I put a new quill stem on my bike, and had to slide the bars through the clamp to get it on. I was getting ready to tape the bars up and noticed I scratched them a bit by the clamp. 'No biggie' I thought. I'd just tape to the stem, or not pay attention to them.
Then I read that a scratch in your handle bars can weaken them to the point of eventual failure. They're not super deep, but I can feel them with my finger nail and there are multiple scratches.
I know it's on the pretty part, but I can deal with that if they're not going to dump me on my ass at some point.
Am I screwed?

Thanks.
#2
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From: New Rochelle, NY
Bikes: too many bikes from 1967 10s (5x2)Frejus to a Sumitomo Ti/Chorus aluminum 10s (10x2), plus one non-susp mtn bike I use as my commuter
Only cosmetically. These bars have a separate reinforcing sleeve in the center, so the bar itself is unaffected. Also bars of this type don't use the same high alloys as many ultralight bars, and so are far more forgiving of these kinds of insults.
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FB
Chain-L site
An ounce of diagnosis is worth a pound of cure.
Just because I'm tired of arguing, doesn't mean you're right.
“One accurate measurement is worth a thousand expert opinions” - Adm Grace Murray Hopper - USN
WARNING, I'm from New York. Thin skinned people should maintain safe distance.
#3
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All the Aluminum bars I have had can take quite a beating.
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Next time when you find that the bars are tight enough to scratch like this use something to wedge open the split in the stem a little more so you avoid the sawing action needed to feed the bars though the hole.






