Dumb tubeless questions after Stans pools into jelly in tyre (pic)…
Ok, first tubeless setup and all been good for a few months.
Recently notice Minion is losing pressure even after a short distance. Re-pressurise but still doing it. Take the tyre off to see that stans has set into a rubber pool in it.
bear with me please! 🙂
1) The stans setting “solid” in a pool, just the latex saying I need to ride more?? 😀 I went for 2 weeks without a ride waiting for a part to turn up. Should that really cause it to harden in place though??
2) This stuff is hard to remove. Got the big pool of stuff out but around the bead of the tyre I’m having trouble getting it perfectly clean… But is that even necessary? I don’t want it to compromise the bead sealing potentially.
3) I applied good quality rim tape as recommended on here, Tesa…but only applied one layer of it only over lapping the valve by a few inches. I notice the tape is being indented over the spoke holes by the air pressure against it. Best to do 2 layers of tape to be sure?
Oh, rim is an Alexrims Volar(?)25. 29″ flavour.
Thanks for info guys,as always. 🙂
Posted 7 months ago
Yes mate, Stans fluid. Brand new tyre and wheels so no previous brand of fluid.
Just set the tyre up again a few mins back actually, used 2 layers of rim tape too… for the hell of it.
Gone up with track pump reardy as the Minion always seems to do on these rims. Taking it for a short ride in a bit to get the fluid nicely around the tyre.
I remember reading something about CO2 cartridges causing a “cold shock” to the fluid but wasn’t really sure if this is one of those myths to be honest! 🙂Posted 7 months ago
Resurrecting this as had the same problem in the HR2 now. 🙁
Losing air slowly, popped the tyre off… to see the sealant congealed in a rubbery pool again.
As before an almost clear fluid also in the tyre, obviously separated from the actual sealant itself.
Never got round to mailing Stans but think I might have to! 🙁
Interesting to hear you’ve had this too Alex.Posted 6 months agohousehusbandSubscriber
It’s the CO2. I’ve had exactly the same happen so talking from experience.
(If a tyre does need a shot of CO2 to pop the bead onto the rim I only do it without sealant; deflate once sealed and reinflate and deflate again to purge CO2 and then add sealant through the valve.)Posted 6 months agogelertSubscriber
I believe the pool of thick gloop is the actual rubbery particles that float in Stans and actually do the sealing. So add some fresh Stans and mix it all in.
The “gone off” Stans boogas (which you don’t seem to have) need to be discarded – they’re usually quite big and look like something from Alien.
On normal Stans the bottle says to open the lid, hold your finger over the hole, shake then turn upside down and wait a few seconds before pouring. This lets the thicker particles that actually seal holes come to the bottle opening.Posted 6 months agoSTATOMember
New maxxis always feel very ‘slimey’ on the inside from the mold release, possibly that interacting with the stans. I usually give the new tyre a scrub to clean that off before mounting, more because I want the stans to ‘stick’ in a hole than thinking about adverse reaction.Posted 6 months agolawman91Member
That’s only happened to my tyres when I’ve changed them over for a ride or two and just left the other tyre with the stans still in the tyre and left them in the bike shed to try and save the sealant, so it much just reacting with the air. The bike must be sat though as obviously the tyres hadn’t moved for a week or two in my case.Posted 6 months agophiljuniorMember
I haven’t had this happen to date, but I have taken to giving the wheels a shake to check there’s still some sloshing about as my last puncture appeared not to seal due to there being no gunk in – once I got home and put more in it sealed up and inflated no bother. I guess I must’ve had some minor punctures without noticing them.
Even tyres I take off and leave in the open air seem to take a while to solidify the pool of Stan’s.Posted 6 months agofibreMember
Stans goes off eventually. I would just check it every 3 months or so by popping the tyre off to make sure there is proper sealant, not just separated liquid and latex sloshing around when you shake the wheel.
Stans has Ammonia in it to stop the latex from going off, it will eventually evaporate through the pores of the tyre until there isn’t any left and the latex will go off. Like when you leave a pool of Stans in a tyre that isn’t fitted to a wheel, it goes off quite quickly.
I’ve found Orange seal lasts longer and seems to work as well, and it doesn’t contain Ammonia, which can damage aluminium.Posted 6 months ago
Bumping this as by the look of it I have the same problem as last year.
The sealant has separated into an almost clear runny fluid and the rest into a pool of rubber at the bottom of the tyre.
Only difference is that the bike has been laid up for a few months.
Any of you guys get this after a few months of not being used?
If so, id better drain the stuff next time I lay the wheels up for a while…
The worst part is the time it takes to get most of the sealant out of the tyre, it’s a compete bitch to do when it’s like this. 🙁Posted 1 week agoBFITHMember
“The sealant has separated into an almost clear runny fluid and the rest into a pool of rubber at the bottom of the tyre.”
I had the very same thing recently with some UBER tyre matrix sealant. When I went to swap tyres recently the sealant had separated into a thin watery substance and balls of sludge stuck to the inside of the tyre. Spoke to uber about it – they hadnt come across this before but were going to look into it.Posted 1 week ago
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