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Old 10-15-09, 09:42 PM   #1
TallRider
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flat bar a danger after crashes cause bar-ends to crimp end of bar?

my commuting bike has flat bars with bar-ends. I've crashed a couple of times, both low-speed crashes where the bike landed on its side and the bar-end took a lot of the initial impact. In both cases the quill stem twisted inside the steerer tube. Easy to fix of course.

But I wonder about the safety of the handlebar. It's a standard mtb flat bar with 25.4mm clamp, mounted in an old quill stem (also with 25.4mm clamp).

The end of the bar is crimped, on both sides, where the bar-ends attached. I've re-attached the bar-ends, simply moving them inward along the bar to clamp onto "clean" uncrimped part of the bar.

Is it worth worrying about damage to the bar?
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Old 10-15-09, 10:04 PM   #2
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Should be ok...just check for splits/cracks in the tubing and/or replace the handlebar if there is or for peace of mind. Or just pickup a $10-15 Dimension/Pyramid/etc 'steel' flatbar and replace it.
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Old 10-15-09, 10:33 PM   #3
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Originally Posted by timcupery View Post
my commuting bike has flat bars with bar-ends. I've crashed a couple of times, both low-speed crashes where the bike landed on its side and the bar-end took a lot of the initial impact. In both cases the quill stem twisted inside the steerer tube. Easy to fix of course.

But I wonder about the safety of the handlebar. It's a standard mtb flat bar with 25.4mm clamp, mounted in an old quill stem (also with 25.4mm clamp).

The end of the bar is crimped, on both sides, where the bar-ends attached. I've re-attached the bar-ends, simply moving them inward along the bar to clamp onto "clean" uncrimped part of the bar.

Is it worth worrying about damage to the bar?
Is it steel?
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Old 10-15-09, 10:39 PM   #4
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As long as the clamp area looks OK, I wouldn't worry too much about it unless you hit jumps or have big arms and hammer out of the saddle a lot. I'd just saw off the ends, clean 'em up with a rat tail file and get on with it.
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Old 10-15-09, 10:51 PM   #5
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And always plug the ends of handlebars. Otherwise, in the event of a bad crash, they can easily impale the rider or others. I saw this after it had happened. The scars were horrific.
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Old 10-16-09, 01:33 AM   #6
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I would fit an insert into the ends of the bars to take the compressive loads of the bar-ends. That way, they won't crimp inwards over time. Better clamping too.
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Old 10-16-09, 08:04 AM   #7
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And always plug the ends of handlebars. Otherwise, in the event of a bad crash, they can easily impale the rider or others. I saw this after it had happened. The scars were horrific.
+1. Part that costs well under a dollar that can save your life.

I know there was an article posted on BF where the rider didn't get a chance to scar - took a core sample of himself that proved fatal.
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Old 10-16-09, 08:10 AM   #8
TallRider
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bar is aluminum, clamp area (joint to stem) appears fine
ends are plugged, but not with something that bears clamping force of bar-ends
I might just saw off the ends of the bar (crimped area) so that bar doesn't stick out beyond bar-ends and have the ability to take a core sample.
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Old 10-16-09, 08:15 AM   #9
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Al bars aren't too expensive.
Not the worst idea to replace them periodically. Especially after incidents.
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