Patching tubes with old bicycle tubes

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Patching tubes with old bicycle tubes

Postby mikesbytes » Fri Nov 21, 2008 10:53 am

I want to have a go at patching tubes with bits of old bicycle tubes. Has anyone done this? Does anyone know how its done?
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by BNA » Fri Nov 21, 2008 11:07 am

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Re: Patching tubes with old bicycle tubes

Postby sogood » Fri Nov 21, 2008 11:07 am

mikesbytes wrote:I want to have a go at patching tubes with bits of old bicycle tubes. Has anyone done this? Does anyone know how its done?

Never done it myself but have seen road side mechanics do it in Beijing. Cut the old tube into round patches and shave the edges so that they smooth down to the tube being repaired. Stick them on!
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Postby r2160 » Fri Nov 21, 2008 1:57 pm

What glue would you use with that?

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Postby sogood » Fri Nov 21, 2008 2:40 pm

Try the same we use for conventional patches. Just apply on both sides. I have seen what looked to be contact adhesive being used ie. Yellow tinted goo.
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Postby mikesbytes » Fri Nov 21, 2008 6:25 pm

Yellow tinted goo might be some sort of vulcanising glue, ie it dissolves slightly into the rubber
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Postby eucryphia » Fri Nov 21, 2008 6:43 pm

It works fine on my tubes, I use the small tubes of glue from any LBS, none have failed so far.

I went back to the thin patches as I didn't know how they would last.

I cut the patches slightly bigger than a 5c piece,
rough the tube,
apply the glue,
spread it by rubbing the tube and the patch together to get a full even coverage,
let the glue dry a bit,
then clamp overnight with a $1 spring clamp I bought at the local hardware. (Googled image, mine actually have grip pads which pivot on pins and grip flat at any opening width)

I've solved 90% of my puncturing with higher spec commuter tyres.

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Postby fixie » Fri Nov 21, 2008 8:22 pm

It works. What was seen in Beijing is correct. The glue is the same rubber cement we normally use. Just comes in a can. Allow both surfaces to dry to the tack stage then join. No special clamps required. Do not try and inflate without a tyre outside. With a tyre on and inflated the tyre and tyrepressure act as a clamp. Been doing it for a very long time when I can be bothered or there is nothing better to hand.

Warning :!: If you are repairing singles and using latex tubes/patches, the glue will attack the latex and cause it to curl up. Keep the glue layer very very thin, and restrain the patch from curling up.
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Postby Kid_Carbine » Sat Nov 22, 2008 2:41 am

An old trick when actually applying the patch is to place the patched portion of the tube on a hard surface, patch uppermost, [table, bench, knee will do] then use the spoon end of a tyre lever & firmly rub over the patch itself as if you were trying to push out air bubbles in the glue.
Start from the center & work outward, then just go nuts rubbing the patch with a firm pressure. I have never had a patch fail to stick properly after that.
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