[IBIKEAZ]

Well it happened to me. I thought it wouldn't. I bought the new Stan's rims hoping I could go tubeless. I mounted up the rear with no problems. Sealed easy and stayed sealed. I went on a ride and it worked great. So I mounted up the front (Mythos folding). Sealed great, stayed sealed for 3 hours. I put the front wheel back on the bike. Then as I was putting the rear wheel on--- KABOOM! Loud ass noise at 10:00 at night (front tire blew completely off rim). Wife comes outside and says "what happened?" Well it does scare ya. I'm glad it didn't happen when I was putting the front wheel on. Now I think I'm going to be to nervous to try it again until tubeless tires come out for 29er's. I talked with someone at Stan's and he said they still think all 29er folding bead tires are to weak to try it. At least I can say that I like the rims, they feel soo light and spin up well, so they're worth it for me.

 

[bobway]

i had the same thing happen

i had been running irc mythos 29er tires tubeless for 6-8 months with no problems whatsoever using stans strips & sealant on wtb rims. i mounted the used mythos on a new rear wheel w/salsa delgado rim/stans strip and it aired up real nice, no cause for concern. later that evening i went bed and was woken by an explosion/BOOM noise! I knew what it was immediately from the sound. 1 corner of my living room had stan's spooge all over it, the mythos hanging limp from the rear wheel. Believe it or not, the tire appears ok still. I am now running it with a tube as it was designed for, and its working fine, looks fine, etc. That tire/rim combination I will not attempt tubeless again. thank god I was not riding when it happened.

 

[20.100 FR]

waou, even a stan ztr rim as a blowoff !!! That's really bad !

You know that mavic + huchinson/michelin have UST road rims/tires (secret?) protoypes rolling since last summer at least.
If it resists 8 bars of road tire pressure, may be it can resists the 2 bars of a MTB ?

I wonder if paris roubaix riders were using this setup...

Could be a nive thing for 29ers....

 

[Fattirewilly]

Well it happened to me. I thought it wouldn't. I bought the new Stan's rims hoping I could go tubeless. I mounted up the rear with no problems. Sealed easy and stayed sealed. I went on a ride and it worked great. So I mounted up the front (Mythos folding). Sealed great, stayed sealed for 3 hours. I put the front wheel back on the bike. Then as I was putting the rear wheel on--- KABOOM! Loud ass noise at 10:00 at night (front tire blew completely off rim). Wife comes outside and says "what happened?" Well it does scare ya. I'm glad it didn't happen when I was putting the front wheel on. Now I think I'm going to be to nervous to try it again until tubeless tires come out for 29er's. I talked with someone at Stan's and he said they still think all 29er folding bead tires are to weak to try it. At least I can say that I like the rims, they feel soo light and spin up well, so they're worth it for me.

Could you clarify if it just blew off or did the bead actually break, requiring you to throw the tire away?

 

[bobway]

my mythos "just" blew off the rim (delgado) the tire was not obviously damaged. "blowing off" is probably too gentle a word. sounded like a gun shot only much deeper tone. my neighbors heard the explosion and came outside to see what happened. it was at 28-30 psi.

 

[IBIKEAZ]

just blew off

I can't tell if the bead is damaged, I don't see any visable damage at all. "Bobway" is correct though, my tire blew loud enough for my wife to come from the other side of the house. The neighborhood dogs started barking for a long way off too. The bummer was I took off my safety glasses and earplugs that I had on to inflate the tire.

 

[Quasi]

Well it happened to me. I thought it wouldn't. I bought the new Stan's rims hoping I could go tubeless. I mounted up the rear with no problems. Sealed easy and stayed sealed. I went on a ride and it worked great. So I mounted up the front (Mythos folding). Sealed great, stayed sealed for 3 hours. I put the front wheel back on the bike. Then as I was putting the rear wheel on--- KABOOM! Loud ass noise at 10:00 at night (front tire blew completely off rim). Wife comes outside and says "what happened?" Well it does scare ya. I'm glad it didn't happen when I was putting the front wheel on. Now I think I'm going to be to nervous to try it again until tubeless tires come out for 29er's. I talked with someone at Stan's and he said they still think all 29er folding bead tires are to weak to try it. At least I can say that I like the rims, they feel soo light and spin up well, so they're worth it for me.

I think I will send Stan an email thanking him. These threads are great. This forum can get a bit serious, not too many threads give me a good laugh like Stan's blow-out threads. I can just imagine having a tire blow off in the middle of the night. I missed it when that guy shot his father and the SWAT team showed up.

 

[Soupboy]

I knew there...

...was a reason I converted my Stan's rim strips to chain-slap protectors two seasons ago...

Viva El Tube,

Sean

 

[banks]

Welp you now have learned.............or not.............

Be carefull out there, when stan's fails, it's catastrophic, on or off the bike it does not matter.

 

[GlowBoy]

Another tubed tire mounted contrary to mfr's recommendations go BOOM!

^^ Suggested thread title revision

Sorry to be the flame magnet here, but I'll take the pressure off others and take my turn at this rant. But really, should anyone be surprised anymore when a 29" tire designed for tubes is mounted up tubeless, and then blows up? What can I say, being in my late 30s my self-preservation instinct is fully developed, so I can't imagine even trying it. I shudder to think what would have happened if that failure had occurred on a steep high-speed descent, especially if there were trees or cliffs nearby. Glad you weren't hurt, but I'm starting to wonder if it's just a matter of time before this kind of thing causes someone to be seriously injured. Or worse.

So far the strongest mfr. response we've heard to this phenomenon has been for WTB to start labeling tires (at least the Kevlar Nano) as not to be used tubeless. Even if those who experiment with tubeless promise not to sue, if someone gets hurt really badly there's bound to be a chilling effect. It could deter some promising manufacturers (Ritchey? Hutchinson?) from entering the market, and some of our tire choices could even disappear from the market.

Let's say Hutchinson is seriously thinking about bringing us the Python, then this happens. I could see them deciding, "well, I guess if we came out with UST version of the Python at the same time as the tubed version, then we won't have to worry about too many of these 'experiments' ... but we can't cost-justify two versions of the same tire for the limited 29" market, so forget about it." I don't think that's so far-fetched. {/rant}

Here's a question for those of you who've been playing around with tubeless: has anyone thought about just doing the rear tubeless, and keeping a tube up front? You'd still get the rolling resistance and pinch flat resistance benefits where they matter most, and you'd reduce the risk of catastrophic crashes a whole lot. Anyone?

- Dan

 

[sslos]

^^ Suggested thread title revision

...Sorry to be the flame magnet here, but I'll take the pressure off others and take my turn at this rant. But really, should anyone be surprised anymore when a 29" tire designed for tubes is mounted up tubeless, and then blows up? ...Glad you weren't hurt, but I'm starting to wonder if it's just a matter of time before this kind of thing causes someone to be seriously injured. Or worse.

I'll happily share the load, as I just got some snazzy new asbestos underwear...

So far the strongest mfr. response we've heard to this phenomenon has been for WTB to start labeling tires (at least the Kevlar Nano) as not to be used tubeless. Even if those who experiment with tubeless promise not to sue, if someone gets hurt really badly there's bound to be a chilling effect. It could deter some promising manufacturers (Ritchey? Hutchinson?) from entering the market, and some of our tire choices could even disappear from the market.

Seems pretty obvious to me. If/when UST tires in plus-sizes come out, I'd be all for going tubeless. But for now, the tires just aren't designed with that in mind. I've had too many customers have this kind of problem- in 26".

Let's say Hutchinson is seriously thinking about bringing us the Python, then this happens. I could see them deciding, "well, I guess if we came out with UST version of the Python at the same time as the tubed version, then we won't have to worry about too many of these 'experiments' ... but we can't cost-justify two versions of the same tire for the limited 29" market, so forget about it." I don't think that's so far-fetched. {/rant}

Let's hope they do produce a 29" Python. It'd be cool if they eventually made a UST, but let's not scare them off.
Good on ya, GB.

the los

 

[Quasi]

^^ Suggested thread title revision

Sorry to be the flame magnet here, but I'll take the pressure off others and take my turn at this rant. But really, should anyone be surprised anymore when a 29" tire designed for tubes is mounted up tubeless, and then blows up? What can I say, being in my late 30s my self-preservation instinct is fully developed, so I can't imagine even trying it. I shudder to think what would have happened if that failure had occurred on a steep high-speed descent, especially if there were trees or cliffs nearby. Glad you weren't hurt, but I'm starting to wonder if it's just a matter of time before this kind of thing causes someone to be seriously injured. Or worse.
- Dan

How dare you put the health and well-being of a few people ahead of my enjoyment of "Stans Blowout" threads?

 

[29Inches]

AHHHH stick with the tubes

How dare you put the health and well-being of a few people ahead of my enjoyment of "Stans Blowout" threads?

I was a huuuuuuuuuuuuuge tubeless fan back in the mini wheel days. However for 29'ers?? Well I am sticking with tubes. I tried tube tires for tubeless applications for 26" wheels but nothing worked as well as a TIRE DESIGNED FOR TUBLESS APPLICATIONS!!!! I am currently building up a new wheelset with Stan's rims but plan on running tubes until a legit tire is designed.

 

[IBIKEAZ]

Blowout

The point of my thread was to say that the new stan's 29er rims with the improved hook, didn't hold up. I knew there might be the blowout problem, but I never had this problem with a 26" non-UST tire, and had not heard of any either. I tried it at my own risk and will not blame the tire manufacturer. Just thought I'd let those who may be interested in the new Stan's rim know it will not solve the problem, only UST tires will.

 

[corner_stuffed]

IBIKE AZ....did you use the small yellow rim strip or the larger rim sealing stip.

 

[Cloxxki]

Was the fit tight, or could you have thrown the tire on from the other side of the room? Add a thick Velow or similar rimstrip underneith a Stan's rubber strip, and see it you can get the tire to blow off that
If it's lik really hard to mount a tire, the chance of it "just" blowing off is greatly reduced as well.

 

[IBIKEAZ]

tire had a super tight fit

I used the Stan's rubber rim strip. The fit was really tight, I had to use tire levers to get it on. I was impressed with the tightness so I thought I may have had a good tubeless solution. I'll wait for UST tires in the future.

 

[corner_stuffed]

- Tire Recommendations - Any Brand of Tubeless tire can be used.


Standard Tires NOT Recommended

Michelin
Nokian
WTB
Panaracer
Bontrager
Intense

When standard tires are mounted tubeless strain is put on the bead. The above listed tires are known to have weaker beads in the tire which can cause the bead to severely stretch or snap.


Recommended (non-tubeless) Tires

Continental
Hutchinson
Kenda
Specialized
and most other brands.



not sure if it matters or not to you. I found this on the Stan web site.

 

[29Inches]

Maxxis?

- Tire Recommendations - Any Brand of Tubeless tire can be used.

Standard Tires NOT Recommended

Michelin
Nokian
WTB
Panaracer
Bontrager
Intense

When standard tires are mounted tubeless strain is put on the bead. The above listed tires are known to have weaker beads in the tire which can cause the bead to severely stretch or snap.

Recommended (non-tubeless) Tires

Continental
Hutchinson
Kenda
Specialized
and most other brands.

not sure if it matters or not to you. I found this on the Stan web site.

What do you think?

 

[Cloxxki]

Booms confirmed on Maxxis.
IRC used to be the boom-proof brand till this post, at least to me.