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Tubeless tyre randomly going?

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  • July 5, 2017 at 9:38 pm #27319
    BrokenBootneck

    had an old puncture go yesterday, it sealed no issues but lost a reasonable amount of sealent. Cycled 20 odd miles home no issue. 

    Cycled to work and back today, serviced bike added extra sealent, reinflated tyre. Then about 90mins later heard a noise like air escaping? Tyre deflating spun it around sealed again. Anyone else had this?

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Viewing 11 replies - 1 through 11 (of 11 total)
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  • July 9, 2017 at 6:31 pm #896595
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    gunswick

    I had a similar issue with a
    I had a similar issue with a 3mm sidewall hole that would only seal at 30psi, anything higher and it couldn’t quite get it.

    I used weldtite tubeless repair string on it and it worked great (still fine 6 months on). These strings are quite thick, more MTB based I guess, but work well on 3mm holes. Smaller strings are available too such as the genuine innovations which I found could not seal 3mm holes (and anything smaller the sealant can cover so these didn’t work for me), links below:

    https://www.evanscycles.com/weldtite-tubeless-patch-kit-00103371?esvt=54908-GOUKE2288962&esvq=&esvadt=999999-0-1219558-1&esvcrea=189743470207&esvplace=&esvd=m&esvtg=pla-306966038053&esvo=00103371-NA-NA&esvaid=50080&gclid=CjwKEAjwqIfLBRCk6vH_rJq7yD0SJACG18frTZvYzFexK-3nPWypIFkA1L38ScG3yC2rBBen2xB4PBoCuljw_wcB

    https://www.tredz.co.uk/.Genuine-Innovations-Tubeless-Tyre-Repair-Kit_36319.htm?sku=86726&utm_source=google&utm_medium=cpc&utm_campaign=google_shopping&gclid=CjwKEAjwqIfLBRCk6vH_rJq7yD0SJACG18frwtuWn0MD_bO6pF_mpKEjPpJ__4Gm10BHyVeId20bxxoC1mnw_wcB

    July 7, 2017 at 2:33 pm #896593
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    StraelGuy

    If anyone in the Liverpool /

    If anyone in the Liverpool / Manchester area wants a nearly new Airshot for a bargain price, email me at guyrwood at gmail dot com. I’ve given up on tubeless.

    July 7, 2017 at 2:21 pm #896591
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    BrokenBootneck

    I might look at those patches

    I might look at those patches next. Have the air shot great bit of kit

    July 7, 2017 at 11:54 am #896589
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    riotgibbon

    I had problems with the

    I had problems with the ‘string’ repair kits, I just made the holes bigger in *2* tyres

    these are much better:

    https://www.acycles.co.uk/zefal-tubeless-repair-kit-10369.html

     

    super thick patches, held out so far (I slashed open a brand new G-one speed on a tow path within a week of getting, 6 weeks later is still fine after repair)

     

    if you’re using this method, then take the tyre off and give it a nice soapy wash first, get it all nice and clean. The airshot compression chambers are pretty useful too:

    https://www.evanscycles.com/airshot-tubeless-tyre-inflation-system-EV285127

     

    it is a bit more a faff all round, but I think it’s worth it overall once you get it right

     

     

     

    July 6, 2017 at 9:41 pm #896587
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    BrokenBootneck

    Cheers guys. Went again today

    Cheers guys. Went again twice today re sealed and rode home st 35 psi without an issue. Tyre is coming off next weekend as going off road will have a good look and patch at the same time. 

    July 6, 2017 at 9:14 pm #896585
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    CXR94Di2

    simonmb wrote:

    simonmb wrote:

    Put a tube inside. Sorted. 

    You can patch one of those, a tangible repair, or simply replace it. 

    I’ve watched too many videos of folks faffing around trying to get tubeless seated for the first time. Really. I love fettling – but it’s all too much of a fuss.

    Still heavily underwhelmed by the whole tubeless-for-road phenomenon. 

     

    If you’re going to adopt tubeless them the correct tools to inflate are invaluable. They do have several benefits, plush ride, immune to sudden deflating and will usually get you home without a repair.

    July 6, 2017 at 6:16 pm #896583
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    simonmb

    Put a tube inside. Sorted. 

    Put a tube inside. Sorted. 

    You can patch one of those, a tangible repair, or simply replace it. 

    I’ve watched too many videos of folks faffing around trying to get tubeless seated for the first time. Really. I love fettling – but it’s all too much of a fuss.

    Still heavily underwhelmed by the whole tubeless-for-road phenomenon. 

     

    July 6, 2017 at 9:29 am #896581
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    adamthekiwi

    I’ve used the vulcanised

    I’ve used the vulcanised ‘string’ kits for repairing holes and tears that wouldn’t seal, and they seem to work well – for example: https://goo.gl/6AdJdU

    July 6, 2017 at 9:27 am #896579
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    missionsystem

    I had this issue recently too

    I had this issue recently too – i think it is worse if there is a foreign body still stuck in the tyre.

    Whilst I did take the approach described by CR94Di2 – I’m not sure it really helps. I think it’s the action of the air escaping that gets the fibres in the sealant where they need to go.

    I repeatedly tried to get air flowing out of the hole by inflating the tyre to maximum pressure. You tend to get the situation you describe – walk off to make a cuppa and psst, out it comes when you least expect it! Spin the wheel and it should seal up. Then reinflate and repeat.

    Once it stops giving up dramatically, take the CR94Di2 approach. If it’s still seaping you’ll get a damp patch on the tyre letting you know it still not fixed properly. If there’s no damp spot after a night then everything’s rosy. 

    I think I’ll get a tubeless tyre repair kit and give that a go at some point.

    July 6, 2017 at 8:46 am #896577
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    nniff

    I’ve got a few holes that

    I’ve got a few holes that keep re-opening.   Having had a good look at the tyre, it’s not worn but it is cut to pieces.  Must have had a few unfortunate route choices.  New tyre time – there are a few patches inside it already

    July 6, 2017 at 6:22 am #896575
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    CXR94Di2

    Yes, leave the wheel with the

    Yes, leave the wheel with the puncture at the bottom postion so it sits in the sealant for a good while, to get a good seal.  If it keeps failing then it might be too big a hole for the sealant, eith patch or inner tube.

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