Mystery tubeless deflation on the trail finally sorted.

[Waynemarlow]

Been having a mystery tyre deflation whilst underway recently which had really started to irritate me. Pump it up and it wouldn't loose a bit of air whilst sitting in the garage. Ride it and sometimes it would be fine, the next suddenly you would loose 1/2 the air and needing a top up. No obvious leaks of sealant around the rim indicating a problem there.

Finally took the tyre off and found the cause, a cut about 5mm long right through the centre of the tyre, the sealant seems to plug the hole, but the cut was so big that when you hit a stone or root and deflected the tyre just at that point, it looks as though the sealant plug would be spat out and in the process before a new plug would form, 1/2 the air would go.

Mystery solved with 3 tyre repair plugs through the same hole, the sealant seems to do the rest.

 

[Gary]

which tyre repair plugs did you use?

 

[towzer]

FYI, ime with large/large multiple plug fixes it is better to replace with an inside mushroom as I have had a couple of ‘complex repair’ plugs fail after a bit of tyre wear etc on large punctures

Tyre Repair 5 x 3mm Plug / Patch 5 x 6mm With Lead wire & 20ml Schrader Cement | eBay

Find many great new & used options and get the best deals for Tyre Repair 5 x 3mm Plug / Patch 5 x 6mm With Lead wire & 20ml Schrader Cement at the best online prices at eBay! Free delivery for many products.

www.ebay.co.uk

I’ve also bought some stans darts (They’re claimed to chemically interact with the sealant I think)as these are meant to work on larger punctures but luckily I haven’t had to use them yet so can’t give feedback

 

[Waynemarlow]

FYI, ime with large/large multiple plug fixes it is better to replace with an inside mushroom as I have had a couple of ‘complex repair’ plugs fail after a bit of tyre wear etc on large punctures

Tyre Repair 5 x 3mm Plug / Patch 5 x 6mm With Lead wire & 20ml Schrader Cement | eBay

Find many great new & used options and get the best deals for Tyre Repair 5 x 3mm Plug / Patch 5 x 6mm With Lead wire & 20ml Schrader Cement at the best online prices at eBay! Free delivery for many products.

www.ebay.co.uk

I’ve also bought some stans darts (They’re claimed to chemically interact with the sealant I think)as these are meant to work on larger punctures but luckily I haven’t had to use them yet so can’t give feedback

Mmmm not seen those small enough for bike tyres, good call. The downside is I find that it’s almost impossible to solvent glue on patches to the inner part of the tyre once you have used latex sealant

 

[Waynemarlow]

which tyre repair plugs did you use?

Pardon our interruption...

www.ebay.co.uk

 

[Gary]

Thanks man.
I was wondering if you meant that type.
I tend to patch tyre rips from the inside using automotive tyre patches and vulcanising solution. Automotive plugs are also available that look a little like a large rubber drawing pin and work in the same way as a patch but plugs the hole too.