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Tubeless tires ~ leaking


Flyingfeet

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Hi, converted to tubeless afternoon before a Attakwas race:

 

Road 6km to get sealant particulates evenly worked in. Was leaking over night: water and sealant on my floor. Thought was normal and just need to ride them in. Next day during race NO punctures and seemed to maintain 2 bar pressure.

Attach: After race this is what the rims look like.

Had lost some pressure so during pump air and sealant exuded through value seal. Have to pump every night for a week since Saterday.

 

BIke: GT Zaskar-expert (m) 1 yr old

RIMS:Easton Exp360

Tires: Mixxis tires 29er

 

Seek advice as to what is possibly the problem? (BIke shop that fitted the tubeless "says its normal"!. Possible rim tape holes?

 

appreciate feedback (I'm fit but rusty on the mech. getting there:)

 

thank you happy Saterday...

Caryn

post-41429-0-04697200-1390634907_thumb.jpg

Edited by Flyingfeet
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Not sure what the exact problem could be,but I can give advice on experience and what iv learnt so far.when putting new stans)or whatever you using in. First take an old tooth brush and dunk it repeatedly in some stans and scrub the rim,this will help get it in any nooks and crannys.after that put the tyre on and full with stans I pump only till both sides pop and seal then shake the tyre,after that put more pressure and spin wheen on bike(or just ride it)....if you pumping tyres up to 3 or 4 bar for road riding,be sure to drop the pressure right back down again afterwards,apparantly this will help prevent the tyre from weakining down the middle and causing small holes.....so far iv taken this advice and all has gone well.

I been on tubeless 4 months now and def saved a few races and rides for me.

Good luck

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Thank you Tayyib: Because i was rushed for time and new to Tubeless I let the bike mech. at shop put the new on.

(as a paying client you trust it is prept. in good hands!) .Makes sense to scrub it up in ICU ;-). MTB tires at 2 bar and kept hard. If all's in place re rim tape, no holes then there should be no leakage. I was informed it might leak water /sealant for a week and even up to month. The I should trust all is well then if the tires do not go flat! bizaar!

Will keep in mind the steps whence the need arises.

 

Wil6: Besides when I pumped it up once after the race, through the valve seal. Sealant from the rims: yes good Q...random area of the rim....(taken back to shop this morning to check, response "nothing wrong".....left it there the weekend.....await verdict on monday.;-). thanx guys

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Try dunking the tyre in some water and see if and where bubbles are coming out. Turn the wheel so the spot where the bubbles are appearing is at the bottom. Should seal within a few seconds.

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Why is there water in the tyre ?

~ yes mmmm the Atta comet that flew into my tire during my fall in a black muddy puddle ;-P. I ask the same question...apparently normally found in the mixture of micro particles ???? Surely the latex emulsion would not.....

Edited by Flyingfeet
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You really need a few days if not weeks to 'debug' a tubeless setup, leaks can be a few things, and most not that obvious unfortunately.

 

Stan has some tips on the NoTubes web site. I've had my fair share of grief, but ultimately sorted it.

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Mine did exactly the same but only on the back wheel, eventually decided to put tube back in and then I saw that all the Stans leaked out. Retaped rim tape, new sealant again and seems as if the problem is sorted. I've also put small o-ring seal on the inside of the rim on the valve because mine leaked there as well.

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Mine are ghetto conversion and I had weird problem where it was leaking out by the valve stem. It ended up being that I had torn the tube with my tyre lever just inside the rim. Redid and made sure the split was outside the rim (hadn't trimmed yet)

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somethings not gelling here. What sealant are you using?

Shall find out today if it leaked over the weekend on shop floor and make more informed Q's about sealant /tape/ etc when collecting the bike. Would a particular sealant used make a difference? Edited by Flyingfeet
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supposed to be ! (how would I know if they are genuine?! )

It should have a air tight liner on the rim to seal the spoke holes. And I'm not talking about the normal liner preventing your tubes to be punctured by your spokes
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I'm having a similar problem on my front wheel. tested it dunked it under water many times... no visible leakages but as soon as I leave the bike for a bit it deflates. Don't know what is causing it... got used to pumping the wheel every time before I go out on a ride and sometimes during a long ride.

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