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Bora rim damage

Posted: Mon Sep 01, 2008 1:17 pm
by The Green Flame
I've got a problem with my Campagnolo Bora rear wheel. I had to brake hard for a crash in front of me and i also had to steer. Because of that my tube came loose from my rim and i hit the asphalt on my rim instead of on my tube. On the photo's you can see that the sides of the rimbed are damaged. The damage that you see on the photo's is the only damage to the rim. There are no visible cracks or whatsoever. Also the rim is still completly true.

I need some advice of you guys. How bad is this kind of damage? And is it repairable? And if so, is the repair necessary or can I drive my wheels with this damage? And do you now a company or person how can repair these?

Posted: Mon Sep 01, 2008 1:41 pm
by hockinsk
That's so unlucky to crash like that. I had a very similar crash on alloy rims when my bars caught a bit of street furniture and flipped the wheel 90 degrees at 25mph. At high speed and turning sharply like that, there's simply nothing you can do to stop it.

I would say the rim is repairable to be rideable and safe again, but finding someone nearby to make it cost-effective is the usual problem. Sometimes best to just get a new/used rim from Campag/Ebay.

Posted: Mon Sep 01, 2008 1:41 pm
by Weenie

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looks serious..

Posted: Mon Sep 01, 2008 1:43 pm
by maverick_1
sorry about the mishap..

i would advice that you replace it with a new Bora rim.
from the pics you posted, it seems like a portion of the rim has be grounded off. it sure doesn't look secure if you mount a tubular tire on it. it may roll off if you're unlucky.

my two cents..

keep us posted on your progress.

ride safe

Posted: Mon Sep 01, 2008 2:15 pm
by racyrich
Definitely ditch that rim. Make a nice coffee table with some glass in the middle.
You won't even have to spend much time cleaning it up, there doesn't seem to be any glue on the rim!

Posted: Mon Sep 01, 2008 3:10 pm
by jjmstang
Replace the rim and it looks like you didn't have much glue on that rim.....use more glue next time.


John

Posted: Mon Sep 01, 2008 3:33 pm
by ParisCarbon
Definately ditch that rim!!

Posted: Mon Sep 01, 2008 3:36 pm
by The Green Flame
You see no glue, because I removed all the glue. I wanted to see if I would find some cracks or other damages underneat the glue.
You guy's don't think that a good glue job will hold the tube in place?

Posted: Mon Sep 01, 2008 3:40 pm
by OJ
jjmstang wrote:Replace the rim and it looks like you didn't have much glue on that rim.....use more glue next time.


John

Was the tire even glued would be my guestion. Too bad with the rim though.

Posted: Mon Sep 01, 2008 4:07 pm
by Rodrego Hernandez
Adequate gluing will prevent the tyre rolling off. You need a few coats to get it stuck properly. I find a combination of Conti and Vittoria pretty unbeatable.

Posted: Mon Sep 01, 2008 4:07 pm
by linus
Since this is rear wheel, yes, I don't think you glue the tire correctly.

Ditch the rim and replace it. I wouldn't even think about fixing it.

Posted: Mon Sep 01, 2008 4:36 pm
by racyrich
The Green Flame wrote:You see no glue, because I removed all the glue. I wanted to see if I would find some cracks or other damages underneat the glue.
You guy's don't think that a good glue job will hold the tube in place?


The Green Flame wrote:I had to brake hard for a crash in front of me and i also had to steer. Because of that my tube came loose from my rim.


No way would a properly glued tyre come off under that provocation. Braking and steering sounds like a fairly normal circumstance. If you locked the wheel and it was going totally sideways then maybe, but even then a good glue job wouldn't let go.

Posted: Mon Sep 01, 2008 4:57 pm
by jjmstang
If the tire in the picture is the one that was on I see no glue on the basetape either :?

John

Posted: Mon Sep 01, 2008 5:21 pm
by The Green Flame
No the tube in the picture was not the tube that was mounted. This is a new one.

And yes I was braking so hard that I locked the wheel. My rear wheel came loose from the ground and when it hit the ground again my wheel hitted the asphalt sideways and the tube came off.

Posted: Mon Sep 01, 2008 7:42 pm
by hockinsk
To those who say you can't roll a well glued tubular either turning sharply in a crash or trying to avoid one directly in front of you have not crashed much or seen others crash in front of you at high speed. Your body weight travelling at 30mph through a wheel going sideways to the direction of travel, usually with the brakes still fully on, either folds a carbon wheel (see Burghardt v Dog) when you hit the rider or obstacle in front, or, when the rear wheel regains traction after it flicks up under heavy braking and steering (see Beloki v Armstrong), do sometimes just fail likei nthe pictures above. It's rare, but it isn't to do with poorly glued tubulars, simply physics and bad luck normally. Remember a tubular is only held on by about 30 - 40 lbs.

Posted: Mon Sep 01, 2008 7:42 pm
by Weenie

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Posted: Mon Sep 01, 2008 11:03 pm
by dj97223
It looks to be fairly out of round now. If you mounted a tire to that rim as it is, I would think you would get a thumpa-thumpa, bumpa-bumpa every revolution.