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#41 ·
Mr.P said:
UST is not some class defining separator :rolleyes: The companies that invested the research into UST proved the viability, proved the benefits, and made the necessary engineering changes to make it work safely. That was the foundation for all the MTB tubeless systems today. UST has it's pros and cons like the rest of the tubeless systems. UST is not "The Man" :D
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I don't think UST is "The Man" at all, which is why I didn't say that. It seems like an innate tendency in people to draw lines in the sand and find issues over which to claim personal or "team" superiority over others. It was more a social commentary than a characterization of UST specifically, and it was in response to the "UST is the bomb and everything else sucks" mentality.
In general, I don't think exclusivity gets humanity anywhere.
 
#43 ·
AL29er said:
WTF. Why does every single UST specific thread turn into a conversion tubeless circle jerk??? :eek:ut::)
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Maybe because his real intent is not to find out if UST ever fails, but to try to prove that UST is the "be all, end all", and other conversions are bogus in his opinion.

All you have to do is see his other posts in other threads, and you will understand.
 
#44 ·
So, it seems as though there are real arguments for using UST (or at least tubeless-ready) TIRES, e.g. stiffer sidewalls and some assurance that a sealant won't bleed through the casing.

But how improtant is it to run UST rims? Can a good seal be achieved with tape/rim strips? Do non-UST rims require you to use sealant in the tire?
 
#45 ·
Surly29 said:
So, it seems as though there are real arguments for using UST (or at least tubeless-ready) TIRES, e.g. stiffer sidewalls and some assurance that a sealant won't bleed through the casing.

But how improtant is it to run UST rims? Can a good seal be achieved with tape/rim strips? Do non-UST rims require you to use sealant in the tire?
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The problem with running rim-strips with UST is that the strip doesn't always remain perfectly centered on the rim...which could lead to premature ejaculation of sealant (ie: blowoff) according to one major MFG.
 
#46 ·
jeffscott said:
So what is your timetable to get this flaw fixed???
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I'm trying to sync it perfectly to the moment that single-minded supremacists realize that what works for them doesn't work for others and vice versa... and that that's OK. ;)
Either that or with Bontrager's full-line of 29er UST launch. :p
 
#47 ·
ghetto tubeless with schwalbe tubes (threaded schrader valve to seat better) and whatever tire + stans works good. Ive rocked, Kendsas, maxxis, schwalbes, specialized etc this way and all with the exception 2 ust tires have all been single ply freeride and DH versions (non ust).
They both work the biggest issue I have is blowing a rear rim paart on a rock ....
 
#49 ·
CharacterZero said:
UST is a specification for the entire tire and rim, not just one aspect. So, does it have a UST bead? Maybe, but that doesn't make it UST.

My problem with the 2bliss was that the sidewalls SUCK...they now have the 2bliss GRID...UST specific. Even has the logo.
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2bliss is not UST and is not Grid
Grid is UST
 
#50 ·
shiggy said:
Over the last 27 years on mtbing I have had very little trouble with standard rims/tires/tubes. In the last 10-12 years of using UST and DIY conversions I have had serious issues only with the latter. I have also found no profound advantage to tubeless other than it makes changing tires slightly quicker (no sealant). Any setup that requires a sealant is just a PITA. DIY setups have also been a huge time sink.

I have had standard tires/tubes come off the rim. Cut tire sidewalls. Rim sidewalls explode on DHs. None caused crashes.

I have burped UST setups. Sheared a valve off with a stick. Cut through the tread. Again no crashes. Tires/rims sealed within seconds if not instantly. But all the UST tires work with all of the UST rims.

DIY has blow off -- riding and in the stand. Failed to hold pressure. Required MORE pressure than the same tire with a tube. Taken hours to hold any pressure if at all. Some rim/tire combos "worked." other combos not at all. Had a couple of crashes where the tire ended up off the rim (before or during the crash was not clear). Nasty mess, too.
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Agree with everything you say. My UST/UST combo has been bomb-proof and runs at lower pressures than my Flows/Stans rims with converted tyres.
 
#51 ·
meltingfeather said:
Yes, definitely. 3 good reasons:
1) Nobody makes UST 29er tires
2) UST tires are heavy as crap and when running sealant the weight penalty has no positive trade-off
3) UST 29er rim selection is severely limited, as in, one, I think (if you don't want a proprietary wheelset).
:thumbsup:
UST: just one more establishment for people to draw lines in the sand and claim superiority over :madman:
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Hutchinson makes a UST 29er tire. Can't remember if it was the Piranah or the Python (or both?)...
 
#53 ·
#54 ·
altazo said:
Because rumors and speculation are so much more fun! But if I must...

http://www.bikebling.com/Hutchinson-Python-29-UST-2-1-Lite-Tire-p/hutchinson-python-ust-29.htm

Geax makes a true UST 29er tire as well, please don't make me dig up a link for that one too...

edit: ah what the heck, http://www.bicycletires.com/pgfsgt/geax_saguaro_ust_tubeless_29_inch_tire/pp.htm
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Both companies made 29er UST tires. Neither company makes them anymore. So, if you want one, better get them quick (if they're actually in stock). My theory is that they didn't sell well, so there may actually be lingering stock for a while.
Geax
Hutchinson
 
#55 ·
altazo said:
Because rumors and speculation are so much more fun! But if I must...

http://www.bikebling.com/Hutchinson-Python-29-UST-2-1-Lite-Tire-p/hutchinson-python-ust-29.htm

Geax makes a true UST 29er tire as well, please don't make me dig up a link for that one too...

edit: ah what the heck, http://www.bicycletires.com/pgfsgt/geax_saguaro_ust_tubeless_29_inch_tire/pp.htm
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hutchinson is no longer made and geax isnt either
check their website only tubeless ready now in 29"
 
#56 ·
twowheelsdown2002 said:
Christ, if I hear that phrase "proper UST rim" one more time I might just puke like CaffeLatex through a cactus hole.:rolleyes:

5 years on DIY tubeless. NO BURPS!! NADA!! ZERO!!

2 torn sidewalls with Specialized Adrenaline tires. Weak sidewalls suck on any setup.

Last 3 years has been split tube ghetto on me and my girlfriends Motolites. No flats, no burps, no sidewall tears. And we do ride very rocky trails like Milagrosa, Brown Mountain, and our backyard of Tucson Mountain Park, as well as trips to Gooseberry Mesa, and "The Whole Enchilada" in Moab.

What it takes is a little mechanical aptitude, combined with a little common sense. You don't go running a 500gram tire that measures 2.3 in width and expect it to hold up in sharp rocks. Duhhhh!!!:madman:

I currently run a Geax DHEA 2.3 in front at 25psi, and a Geax LoboLoco 2.3 in back at 26psi. Both folding bead tires at 790grams. They work great!! I don't try to run super lightweight tires in rocks. Yes, you have to check the tires out and make an educated decision if you should use that tire in your particular terrain.

Common sense people!!! If you can't figure out how to make split tube ghetto work, then you certainly are no mental giant, and should probably be taking your bike to the shop to be worked on anyway.
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Puke away!

The point is DIY tubeless is more difficult to setup than a proper UST system whether you are mechanically inclined or not. Add in that not all standard tires and/or rims will work without inner tubes and you do not know which they are until you try them.

I do choose my tires for the terrain and ride, which adds another level of ease of use. I change tires more often than many change their underwear. THAT is where DIT tubeless, and especially the split tube method, is a PITA. I can swap a tire on a proper UST/tubeless ready system, even with sealant, in under 2 minutes without rushing. And I know it is ready to ride.

I am not saying you should not use DIY tubeless, but people need to understand and accept the risks for themselves.

BTW the only burping I have had with proper UST tires and rims was when I was hopping sideways up a natural half pipe with very low pressures.
 
#57 ·
Surly29 said:
So, it seems as though there are real arguments for using UST (or at least tubeless-ready) TIRES, e.g. stiffer sidewalls and some assurance that a sealant won't bleed through the casing.

But how improtant is it to run UST rims? Can a good seal be achieved with tape/rim strips? Do non-UST rims require you to use sealant in the tire?
Click to expand...
You get the best seal and most secure fit with UST bead tires (UST and tubeless ready) on a UST spec rim. The bead seats of both are designed and made to precisely fit together to make this happen. Standard beads are not meant to seal/secure a tire to a UST rim or a UST tire to a standard rim.

Standard tires and rims have variation in their bead shape, which works fine with an inner tube, but may or may not be secure without a tube. It is this bead fit that is more important than whether sealant is needed or not. With proper UST spec tire/rim beads the tire/rim interface is airtight without any added material.
 
#60 ·
twowheelsdown2002 said:
Maybe because his real intent is not to find out if UST ever fails, but to try to prove that UST is the "be all, end all", and other conversions are bogus in his opinion.

All you have to do is see his other posts in other threads, and you will understand.
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So what you are saying is you don't actually care what the thread topic is, you feel it is your duty to bring outside info and argument into it to "inform" us all of the OP's horrific alterior motives. And you want to call Dan0 the thread police :rolleyes:
 
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