Campag. brake-hood tear
09-25-12, 08:45 AM
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Campag. brake-hood tear
Does anyone know if it is possible to repair a small tear in a circa 1980 campagnolo brake lever cover and what material are they made from? Contact adhesive does not adhere.
09-25-12, 09:31 AM
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I've never had luck repairing those. Replacement is the best option, and reproduction hoods are available.
09-25-12, 09:34 AM
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I don't know exactly what the hoods are made of. Years ago they used to be natural rubber, but I suspect that these days they're some sort of PVC. Either way they have a sort of oily feel and are very resistant to adhesion. Friends claim some success with rubber cements, but IME nothing works, short of taping all the way around.
Do what you can to keep these as long as possible, but a word of warning. Do not try to remove them until you have replacements on hand. Once a tear starts any stress near the edge will expand it all the way across the hood.
Do what you can to keep these as long as possible, but a word of warning. Do not try to remove them until you have replacements on hand. Once a tear starts any stress near the edge will expand it all the way across the hood.
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09-25-12, 10:11 AM
#4
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There are gum rubber and there are other materials .. in colors
perhaps that is vinyl
I used thin glove leather and covered the rubber hoods with it,
to make them stop deteriorating in the sun..
Barge cement, is a shoe repair contact cement. they had a vinyl-stick compound
though the recent re-compounding was trying to DeTox the shoe shops,
that always had a lingering smell of volatile solvents.
perhaps enough lingering skin oils are making things applied not bond well enough?
I just have a little seam at the front and underside of the hood.
perhaps that is vinyl
I used thin glove leather and covered the rubber hoods with it,
to make them stop deteriorating in the sun..
Barge cement, is a shoe repair contact cement. they had a vinyl-stick compound
though the recent re-compounding was trying to DeTox the shoe shops,
that always had a lingering smell of volatile solvents.
perhaps enough lingering skin oils are making things applied not bond well enough?
I just have a little seam at the front and underside of the hood.
Last edited by fietsbob; 09-25-12 at 10:17 AM.
09-25-12, 11:39 AM
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You could ask in the Classic & Vintage forum, although the posters above are pretty darn knowledgeable, so there might not be much to add.
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09-25-12, 04:15 PM
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Loose Screws to the rescue! https://www.loosescrews.com/index.cgi...d=275007612827
09-26-12, 07:16 AM
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09-27-12, 02:25 AM
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The grey hoods are (it appears) unobtainable, and the 'generic' black ones don't look right. Adhesives don't seem to stick. Is this a no-brainer ? - to remove the hood, turn it inside out, and with soldering iron, melt the the two sides of the tear to form a bond.
09-27-12, 08:39 AM
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No, they can not repaired. Your only option are the reproductions on ebay, my understanding is the repros are being made from the original Campagnolo molds.
09-27-12, 05:39 PM
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You're basically considering welding it? That's unlikely to work, seeing as you'll get oxidation products on the surface of the rubber (no inert gas shield or flame exhaust to provide an oxygen-free environment like with welding), and I doubt anyone makes a flux for rubber...
09-28-12, 02:47 AM
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Airburst; What you say I guess makes sense, I wish I had a piece of the material to experiment on though, -what is it anyway? - it's not pure rubber or a puncture repair patch would do the trick, it has an oily feeling to it.
09-28-12, 08:20 AM
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In all honesty, I have no idea. I'd assume it's some kind of synthetic rubber, but the phrase "synthetic rubber" is about as specific as the word "plastic", there are a lot of things it could be, not all of which would be glueable with a puncture repair kit.
09-28-12, 09:20 AM
#13
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soldering Iron might melt the edges together, gluing a cover over the hoods
seems a permanant fix..
seems a permanant fix..
