This is all a bit new to me.
These are Stan's Alpine rims, Schwalbe Racing Ralph Evo tubeless ready and Stan's tubeless kit. Rims are like new, tyres in very good condition. They are both constantly deflating over the period of 8 hours or so, occasionally one of them might keep their air, but not very often. They never go flat, just very soft and need more air nearly everytime. Do I just stick a load more Stan's sealant in? I've already put more in.
Thanks
Bike Forum
Tubeless tyres constantly deflating, any solutions?
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Posted 11 months ago #
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a tube?
Posted 11 months ago # -
Buy one of the long thin oblong plastic plant pots from a Garden Center.
Fill the plant pot up with water.
Inflate offending wheel/tyre combo and stand it in the water. You should see where the leak is from... will determine the next action.
Posted 11 months ago # -
With the Alpine Stans recommended just the yellow tape and valve. If you use the rim strips you might need drill or file out the area on the rim bed at the valve hole. I had a problem with my rocket rons on dt 4.2, wouldn't hold air until that area was flatter.
http://www.notubes.com/ZTR_tubeless.aspxPosted 11 months ago # -
I've had this with a Nobby Nic before. It settled down eventually.
Check you've trimmed the yellow tape cleanly from around the valve hole.
Posted 11 months ago # -
Its possibly leaking out the side walls. remove wheels, and leave them sat on a bucket for a hour or two each side.
Posted 11 months ago # -
UST ?
Posted 11 months ago # -
Have you ridden the wheel yet? If you haven't yet then do it, it helps push all the sealant into all the nooks and crannies and should then seal the tyre fine. Might also be worth deflating the tyre to about 10 psi and having a gentle roll around on it as this does much the same.
If you have ridden it on a proper ride then it suggests that something else is wrong. Was the yellow tape applied correctly and is it still intact? Have you done the valve up really tight as doing them up much more than finger tight often makes things worse and can cause leaks.
Posted 11 months ago # -
You. did do the "sealant shuffle" didn't you? may well bee you need to get the sealant distributed better round the tyre (especially the sidewalls) just to seal up those last few "pin holes"
Posted 11 months ago # -
Steve-Austin - Member
Its possibly leaking out the side walls. remove wheels, and leave them sat on a bucket for a hour or two each+1 (spin em up first though to distribute the sealant round)
Posted 11 months ago # -
I nearly lost the will to live with a pair of Racing Ralph Evo Pacestars recently.
It took literally a whole week of evenings injecting more sealant, spinning them, dunking them in water, shaking the sealant, lying them at an angle etc. before they sealed. Even then, the first couple of rides they still went flat and further dunking in the bath revealed endless new pinholes in the sidewalls.
My conclusion is that quality control at Schwalbe is pish poor - I certainly wouldn't buy another pair.
Posted 11 months ago # -
ditto a set of conti x-kings RS (UST ready) Side walls made of cheese.
What worked was scrubbing the inner walls with a nylon pot scrub to loosen up the waxy layer, fitting then putting a good 500mls of stains in them. Over next few days spin, lay flat, spin, lay flat and repeat.
Once they passed the bubble test removed all the stans with the their syringe kit, and they've been faultless since. Given they weighed 460 gms on the kitchen scales, worth the effort compared to the typical 700+ gm dedicated ust tyre.
Posted 11 months ago # -
I only have problems with Ralphs, it's the only tyre that gives me grief... some just don't seem to want to seal...
Posted 11 months ago # -
Bonty TLR or Spesh 2bliss - fit and forget
Posted 11 months ago # -
I had this problem when I tried tubeless. An uplift day sorted them out. Get em out for a full on sloshing session.
Posted 11 months ago # -
Thanks for all the help
I've ridden them extensively over the last few months and they are still having to be pumped up at the start of every ride. I don't know how much Stan's sealant was put in originally, but I added 30ml to each tyre about a week ago, methodically slightly rotated each wheel over the course of a few days and so far it's made little difference.
Sounds like it might just be the fact that the tyre walls are thin, so maybe I'll just persevere and add more sealant.Posted 11 months ago # -
Previous recommendations on here have been to brush on a mix of liquid latex, and glitter on the inner walls to try and seal them up. Never tried it personally ...
Posted 11 months ago # -
Given the length of time this has gone on I'd be surprised if it was still a sidewall or bead issue.
My money is on a dodgy valve - unscrew the core and give it a clean, it might be gummed up or poor valve seating in the rim.
Posted 11 months ago # -
I've got contis that do this - its a constant balance of sealant sealing the pore holes in the sidewalls, and new ones opening. Dynamic equilibrium, or not, if you're constantly having to pump them up.
Mine take about a week to drop from 30 to 10psi. I'm not terribly bothered, since I check my tyre pressures every ride anyway. If I was, I'd put more sealant in and live with a little more weight, but over time and regular topping up, they do improve.
Posted 11 months ago # -
Put a couple of capfuls of stans in, then look up the stans videos on doing the sealant shuffle thing and rest the wheels on a bucket either side.
Too little sealant or thinking that normal riding will distribute the sealant over the sidewalls is almost certainly why they are failing to seal. Also make sure the yellow tape has a round hole at the valve, if you just cut a cross in it and push the valve through the flaps it will leak.
Posted 11 months ago # -
M6TTF - Member
Bonty TLR or Spesh 2bliss - fit and forget
+1(with ust rims though, no silly tape/rim strips)
Posted 11 months ago # -
Ditto on the Stans website, I followed THIS GUIDE and all worked out well with my Racing Ralphs Evos on Crest rims, with Stans yellow tape, they leaked a lot at first mind and as they're 29ers I ended up putting about 4oz in each tyre.
Posted 11 months ago # -
(with ust rims though, no silly tape/rim strips)
I'd rather have a wrap of yellow tape in my rims than heavier UST rims. Means I get to use normal spokes that I can get anywhere, rather than rim/manufacturer specific UST spokes that are hard to get hold of
Wife's XT wheels...over six weeks chasing a new spoke, at which point we gave up and fitted a different XTR spoke. Hope Hoops with silly yellow tape, spare spokes supplied with wheels as standard
Posted 11 months ago # -
Spooky +1
Posted 11 months ago #
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