deepakvrao

I know they say it will clog all valves, but it does not seem that viscous. Anyone tried injecting it thr a Presta valve with the core removed?

redlude97

Just buy extra cores to replace when they gunk up. I buy a 10 pack for $10 and change as necessary for my tubeless setups

jitteringjr

Wait so their site says "Will clog all valves and injectors instantly"

Does that mean you can't even pump up the tire back to pressure after a week of siting around without replacing the valve?

Racing Dan

I have had the valve clog to a state where I couldn't open it without tools or where I couldn't close it without a small pliers more often than actual holes. Besides sealant drying out inside the tyre, gumming up the valve is a real PITA.

jitteringjr

With the regular Stans or the race one? Or both? or other brand?

TimothyH

Kenda Valve Cores - $7.99 - Box of 10
Kenda Presta Valve Cores | Jenson USA


-Tim-

redlude97

yes, no, maybe so? Don't let air out and rotate the valve to drain any sealant from the valve. Have extra valve cores on hand if they clog. Or just don't use race sealant, regular stans works fine for the majority of people, its a niche product imo

Racing Dan

Sorry. Other brand. Was just commenting on my experiences with sealant.

deepakvrao

Sorry, but confused here guys.

If I remove the core and inject the sealant, how will it ruin the core?

SethAZ 

When the sealant dries it leaves behind solid rubbery mass. You really can't avoid the sealant getting on the core as it sloshes around as you ride. As some of that dries, it gets onto the core and that can interfere with its operation.

deepakvrao

Ok, thanks. I get that, but can I remove the core and inject the sealant? That is what I do with the regular sealant, so that the tyre does not get un seated.

SethAZ 

Yes, and that's what everyone does when injecting new sealant. I guess they're saying that this particular sealant is worse than usual on cores. When you inject the sealant, for instance, and then screw the core back in, there will still be some sealant on the threads inside the valve stem that will get on the core. Removing it when adding more sealant doesn't avoid all contact of the core guts from sealant.

chaadster

Wow. I’ve been running tubeless since ‘13, and although I’ve not used Stan’s Race, I have used regular Stan’s, OrangeSeal, Joe’sEco, and Bontrager and I’ve never had a valve get clogged or gummed up. Valve core design can’t be that different, can it? I’ve only used AC valves.

TimothyH

How do you manage this?

I'm on my second set of cores since March 2017 and these are starting to get gummed up. Orange Seal Endurance if it matters.

Is there a trick or do you have some advice?


-Tim-

chaadster

No, that’s what I’m saying...I don’t do anything. I’ve never had occasion to think about it. I only use about 3oz sealant, but it doesn’t seem like that’d be a factor. Could valve core design be a factor? How different could it be that it could eliminate clogging?

redlude97

Do you bleed air quite often or only top off for the most part? My clogged valves mostly come from the repetitive nature of cross racing where you start high and bleed air down to a level acceptable for the course.

chaadster

Yes, I only top up, and never bleed down. I would expect that bleeding down would be an exceptional use mode, however, especially for the sample of riders found here in the Road Forum. Or do other riders with valve clogging bleed down often?

redlude97

I could see why you don't ever clog valves then

Seattle Forrest

I've been using Stan's until now (trying Orange Seal) and every valve I've used has eventually clogged. I don't normally overfill and then bleed down, I fill to the pressure I want and ride. For me I think it's usually months not weeks before the valve goes.

TimothyH

Thanks.

I don't bleed down but burp the valve before the chuck goes on. I've put the chuck on and started pumping only to find that the hose is pressurizing and not the tire and so got into the habit of burping. You don't do this?

I try to keep the valve at about four or eight o'clock position for a few moments so that sealant runs out but sometimes forget or don't bother.


-Tim-

chaadster

Yes, I tap the valve before I attach the hose and pump up.

redlude97

do you spray any sealant when burping?

TimothyH

So we do basically the same thing yet mine are clogging and and yours are not.

Mine is a wide tire at 45 to 55 PSI. Maybe that has something to do with it.


-Tim-

Tiniest jorts

Granted I've run tubeless for only a year, but I've never had a clogged core. Orange Seal endurance and regular. I only top off or inflate with the valve in a 3 or 9 o'clock position and no sealant comes out.

faulker479

I was about to comment on this. I always have the valve at 12 o'clock so the sealant is at the bottom and far away.