it's got a small tear, about 5mm. Can it be glued? The tread's still good all over.
I very much doubt it. Park Tools do a patch for tyres but it's only designed as an emergency fix to get you home.
i don't see why not if you mate the two parts properly. The superglue will be stronger than the tyre
Yes.
I've superglued up a similar size hole before.
Still works tubeless over a year later.
I've tried this before and it failed badly. The superglue is brittle when dry and the flexing of the tyre cracks it in no time. I then tried supergluing a patch on to the tyre inner wall and that had the same failure.
You could try a large tubeless tyre patch as they are flexible and should work to cover a small tear.
I've a old road tyre for just this sort of thing, cut a bit out of the sidewall , just a bit bigger than the tear, rough up both bits with a file, bit of superglue, job's a good-un...
your mistake there was using non flexible superglue!
AndyPaice - there shouldn't really be any super glue to flex and break - it's a bonding agent that should bond the two bits of rubber on either side to each other.
One of my mates sewed his back up with fishing line: nice and neat and still going strong a few months later.
"mrmichaelwright - Member
http://www.amazon.co.uk/Loctite-Instant-Adhesive-Non-drip-Water-resistant/dp/B001C42IW6
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Posted 1 hour ago "
Ta, that may work better than the one I tried. May save me a tubeless tyre.
"glenh - Member
AndyPaice - there shouldn't really be any super glue to flex and break - it's a bonding agent that should bond the two bits of rubber on either side to each other."
I though only 'rubber solution' glue made rubber 'melt together' like that? I thought that typical superglue just dries and sticks two surfaces together? I may try the one linked above.
I've used bathroom sealant over small holes on tubeless before, works ok as long as you clean it well and there isn't too much damage to the threading in the tyre carcass. Not sure how well it'd work on a 5mm slit though.
Super glue doesn't stick very well and flakes off.
Andy - correct, the superglue doesn't 'melt' the rubber, but because it forms very strong molecular bonds to the rubber surfaces, only microscopically thin layer is required - thus no flexing and breaking should occur. The surfaces need to be pushed firmly together during curing (which needs moisture - blow on it before applying the glue and after).
The park tool tire boot will work fine on a hole that small. Don't you guys have duct tape on that side of the pond?
I don't know why a vulcanizing rubber cement doesn't work for this application but I can tell you it doesn't.
Superglue has little shear strength. Fine for broken household onaments, even medical emergencies requiring a temporary suture equivalent. Wonderful stuff! But **** all use for the sidewalls of bouncy rubber things.
I can see a STW 'armchair engineer' thing kicking off again: Shear strength... molecular bonds... oh dear, here we go.
Super glue is very brittle though - definitely not my first choice for such a job.
super glue doesn't form 'molecular shit', it's a hi-flow capilliary action glue, it gets in between the 'bits' it doesn't form bonds in the 'molecular bond' sense
short term we duc tape the inside, longer term we cut up an old DH inner and contact adhesive a small patch on both sides, lasts as long as the tyre
I've patched the insides of tubeless tyres using a repair patch designed for, funnily enough, TUBELESS TYRES. Not bike tyres right enough, but offroad vehicles, which I suppose a mountain bike is...