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I'm just trying out a tubeless set up and got a small (3mm) tear in the tread area of my Hans Dampfs.
I've tried normal puncture patches and those clear Park patches and neither seal for more than 5 minutes.
What's the technique to fix this or am I back to tubes?
Ta
Cleaning the area around it with sand papper and using a big m/cycle patch.
Open up hole, drop in some super glue, allow it to relax and close up again, never failed for me. Worthwhile cleaning up the residue on the inside of the tyre at some point though, it hardens (obviously and can wear through a tube if you have to put a tube in there) I actually glue a standard inner tube repair patch on the inside to cover up the area (not to seal the hole, as the superglues done that, but just to protect a tube from any hardened super glue should I need to put a tube in three again)
I think all my tyres running tubeless have a repair like this at some point on the tread. Done once you shouldnt have to worry about it again.
for that size hole I've plugged with anchovies and left them in for month with no problems.
the problem i have is findign the holes again post ride after everything is covered in crap and goo.
Pickled or raw ?
[i]Anchovies[/i] down there *points*
On the righthand side...
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I recently repaired a fairly long (5mm) tear in the sidewall of a Bontrager mud-x, using a regular mtb patch wasn't enough, the patches are too thin so when the tyre was inflated it bulged out lots.
I installed a car tyre patch over the existing patch, these ones are much much thicker, it still bulges a bit but has been holding air (tubeless) ever since, that's about 4 or 5 rides now.
As someone said, it's very important to install the patch correctly, clean the area well (isopropyl alcohol will help) roughen it up nicely, let the glue dry (so it's not tacky) before you apply the patch, clamp the patch on to the tyre too, I used a pestle as I don't have any clamps 😀
+1 for anchovies. Work really well.
Those anchovies work really well IME. You can usually cut them down as you don't need a whole one per repair.
Anchovies didn't work for me, I think because my hole was just between the sidewall and side-knobs, so was getting stretched and pulled at during cornering (I tried glue/vulcanising solution/liquisole too, which lasted a little longer but still failed in the end). A quick clean with alcohol and an ordinary puncture repair patch on the inside of the tyre has been working for over 6 months now.
Cheers folks
Patching inside's easy with proper (ie not selfadhesive) patches- just wipe off the sealant, splatch on the vulcanising (nearly said galvanising) solution, wait, stick on tiny patch. Air pressure keeps it on after all so it doesn't need to be that strong, it just needs to stay in place.
If the cut/tear wants to open up when inflated, a wee stitch can help.
Regular patch on the inside
Superglue if the tear is long and "bulgey"
there's some flexible superglue out now - Power Flex it's called.
I've fixed loads of torn tyres (some big tares too) by patching them on the inside with a piece cut from the side wall of an old tyre. Glue it in place using Seam Grip, it's a flexible polyurethane adhesive meant for sealing seams on tents. You can get it from pretty much any outdoor shop. Works a treat! 😀
I just use a self-adhesive patch but with added Evo-stick impact adhesive. Would use normal patches but I've got self adhesive ones left over from when I used inner tubes!
Anchovies work really well. The ones up there ^ are really tacky and stay in. Also sold by Weldtite. Never had one fail.
I tried some panaracer ones that were awful - they just popped out.
I've also used a regular tube repair patch on the inside of a longer tear. It worked but bulged so I replaced the tyre.
Slice up some old inner tube into small strips and keep in bag with jewellers screwdriver and patch glue. Put glue in and around the tear then shove the strips in with the screwdriver. Let it dry. The goop left in the tyre should now seal it. Ideally trim off anything left sticking out.
weldtite do a puncture repair "Patch Strip" thing which is a big rubber sheet so you can cut any size of patch. I use these so I can increase the area of the patch and stick on multiple layers if the hole or tear is large and the first patch bulges through.
Cut a square of inner tube and super glue it on the side.
I had quite a successful repair of a ripped road tyre with superglue and the finger of a Marigold glove. Amazing what you can do when desperate in the NW Highlands!