You don't need to be an 'investor' to invest in Singletrack: 6 days left: 95% of target - Find out more
So had this twice now, not a one off. Tubeless rear coming off with quite a loud bang, when landing a small drop onto flat. I mean a foot one time, less the second. Was considering wrapping more tape round the rim as the tyre is a little bit slack? Could it be pressure? Was a bit soft if anything last night, bit first time wasn't. Rims are flows, tyres- not tubeless cross mark and more recently advantage, not the rider with the most flare, but i didn't land them particularly badly/heavily/awkwardly, and in fact have dropped much much bigger stuff, though that's typically into a down ramp.
Any way more tape? different pressure? just give up and get a proper tubeless tyre?
I await the valuable expereinces, observations and criticisms of the hive mind. 😀
Probably pressure and, if not UST/EXO, a weak sidewall. I blew the rear ADvantage off @ FoD a few weeks ago when I landed slightly sideways off a jump. Did the same to the front too. The pressure on my rear was about 26psi (2.25 ADvan) which had been fine for normal riding. I've now switched to an EXO front DHF and will be getting a rear DHR2 EXO at some point...
Its odd, now I think about my riding, theres a kicker I hit often where I through the back out to land into a berm, that seems ripe for bangses, angle, harder landing... no its an inocous little lip into smooth woodland path that does it... 😕
Is it a sharp/flat lip? The front on mine went on a root that I hit square on. Are your tyres single ply? What pressure do you run them at? Mine were single ply and the wall is quite weak..
I've done this on the front - short drop (about a foot) straight down on to a root, hitting it square. PSI a bit too low and, well, more of a pop than a bang but followed immediately by me unceremoniously vaulting OTB. Oops.
Yeah single ply and about 30. Its just mad they've gone when they have and not at other more provocative moments, casing an attempted double between 2 rollers, 4 -6 foot drops, big rock gardens. No - straight line, small drops I was barely thinking about.
flows need a rimstrip aswell as tape - as I sadly found out, had done some much worse stuff during the day (and previous ride) but came off on landing a small drop (onto pointy rocks)
flow ex/arch ex should be ok with tape, been running crest with nev ust just tape for yonks and it's been fine. arch with tape and ust has been ok too - so far.
How did you get a blow off and not damage the rim? my flow was wrecked, no chance of a second go 🙁
Really wasn't giving it that much beans, first time was stainburn, a few scratches but luckily end of rough section just into a rough corner, yesterday was soft woodland trail at about 10mph. I was able to stop within 3 or 4 metres
Sorry these are Flow Ex.
More more ****ing about then, beefier sidewalls order of the day, until then, more air.
its because you are being tight and not using UST tyres simply!
No, well, a bit, I'm [willfully] believing the marketing of Flow Ex that I didn't need to... 😳
The flows are fine with the stans yellow tape in my experience, I've got one layer on and have ran non tubeless nevegals, excavators, lust ignitor, rubber queens (ust) and bontrager mud-xs without any blow-offs or burps.
I fully expect to drop off a curb tomorrow now and get blown off 😀 (i wish).
erm stan's are [i]meant[/i] for normal tyres rather than UST.its because you are being tight and not using UST tyres simply!
flow ex eh? Maybe add a couple of wraps of tape then, careful with your tyre pressure unkle, too high and they're liable to blow off aswell, never ever go over 40psi JRA say iirc.
with dual ply tyres they worked ok for 18months for me, only got problems when I switched to single ply. Think there's so many variations in tyre/rim combos some people get lucky, others not so much. UST throughout should be a safer bet*, other stuff is more trial and error.The flows are fine with the stans yellow tape in my experience
*tho I believe the DH boys are still quite wary of it.
No, I don't like much over 35 tbh.
Will add some tape and see how we go. tbh the advantage does feel a little loose, is quite easy to put on/off.
I had just said how since going to the advantage I'd not had a repeat of the tubeless go pop... then we set off down the trail, and at the bottom...I fully expect to drop off a curb tomorrow now and get blown off
If you do replace your tyres it would be worth trying the EXO sidewalled Maxxis. They are, kind of, like having a 1.5ply
Mine are currently 35psi- with a tiny bit of the inner tube strip sticking out between the tyre and the rim. will I be ok?
Last Friday was diving into a fast down hill corner with small rut/berm, next thing I know I,m on floor with broken coller bone. Tyre was a used 2.35 high roller on crest rim or rather not on rim. No more tubeless for me .
Don't tell me that!!! 😯
I've only blown 2 tyrs off the rim,
A Maxxis high roller (single ply, normal kevlar bead) re-seated itself after loosing about half the pressure. That was off a ~1ft drop at high speed that landed between two ruts pulling it of the rim.
A WTB Bronson (race?), these are specificaly not recomended for tubeless as the bead is simoultaneously too tight and not strong enough! They've been perfect on crests though at 30psi. At 45psi though (pumped them up for a commute one day) they blew off before the end of the street!
Never burped or blown an actual UST tyre or spesh 2bliss.
Last Friday was diving into a fast down hill corner with small rut/berm, next thing I know I,m on floor with broken coller bone. Tyre was a used 2.35 high roller on crest rim or rather not on rim. No more tubeless for me .
following this post I rang justridingalong who sold me the strip to check if my setup was ok the rim strip MUST be under the rim- cheers and healing vibes dude.
Flows with one layer of Superstar tape, schwalbe TLR or UST between 25 and 30psi and stans fluid. Never had a problem inflating, sealing or running on different terrain in different conditions.
If folk don't want issues with tubeless just do it properly!
D0NK - Memberflows need a rimstrip aswell as tape - as I sadly found out,
What's the issue with using Flows with just tape? I thought that was the whole point of NoTubes rims?
when I had problems I emailed JRA who do a lot of tubeless stuff and they pretty much said (iirc, apologies if misremembering) flow, arch, 355 and olympic were mk 1 design, rimstrip + tape + normal tyres (and sealant). The mk2 design has a larger diameter rim, crest, arch ex, flow ex you don't need rimstrip and may even struggle to use UST as they may be too tight.What's the issue with using Flows with just tape?
But again this is all down to tyre/rim combos, eg I used dual ply with flows no probs, others have used flows without a strip and various tyres with no issues, been using arch with UST tyre for a while, so far it's all good. Wrong combo and the fit is a bit too slack making mounting the tyre difficult and if you are unlucky you can get the tyre popping off the rim.
Rims are flows, tyres- not tubeless cross mark and more recently advantage,
There's your problem: It's "bodged" tubeless, not "proper" tubeless!
Personally if it don't say UST on the side I don't use it tubeless.
@OP - not sure from your grammar but if you're saying you aren't using tubeless-ready version of the tyres then it doesn't take a genius to work out why you might get burping. TR may not cure it completely but the reinforced sidewalls and different bead shape certainly help.
Tyre was a used 2.35 high roller on crest rim or rather not on rim. No more tubeless for me .
Sorry you got injured but wtf are you riding 2.35's on Crest for? Crests are for narrow XC tyres, you should be on Flows/Flow EX if you want to run high volume tyres. Crest's narrow rim width means a high volume tyre has a lot less stability than on a wider rim. They may be fine 99% of the time but under load they're far more likely to roll-off on a narrow rim.
Hey Treefeller, if it makes you feel any better (it probably wont) I was having a chilled run along the red at FOD last Friday popped off the boardwalk 3/4 way down and my front tube exploded. I dislocated and broke my shoulder. Was thinking tubeless was the easy way forward, but perhaps not a simple as I thought after reading this thread.
Sorry you got injured but wtf are you riding 2.35's on Crest for? Crests are for narrow XC tyres, you should be on Flows/Flow EX if you want to run high volume tyres. Crest's narrow rim width means a high volume tyre has a lot less stability than on a wider rim. They may be fine 99% of the time but under load they're far more likely to roll-off on a narrow rim.
Crest's aren't narrow by a long way, all stans rims are wide if you compare them against mavic equivelents. I'm running 2.2/2.3 WTB Bronsons on mine and they're fine, and 2.35 maxxis always come up small, more like 2.1's anyway. Crests are the same dimensions as Arch rims, arch just has an extra bit of reinforcement internaly.
The point of Flow ex's is you don't [supposedly] need tubeless ready. I'm interested in opinions as these wheels have been ragged round Stainburn, the Ard Rock, and plenty of big stuff, but its tiny drops* that out of nowhere seem make them go POP!
*That said I'll be bloody nervous the next time I drop the boulder at Stainburn with them... 😐
crests are sommat like 23mm which is DH width for most rim makers (not DH strength tho obv) and maxxis 2.35 are most tyre makers 2.1 as TINAS already noted.Sorry you got injured but wtf are you riding 2.35's on Crest for? Crests are for narrow XC tyres
"used" is the only thing I'd nominally be concerned about with that setup. How old and how well (ab)used?
Having said that I don't normally run tubeless front, just coz I don't get many front flats, after reading this if I do switch to tubeless front I'll be making sure the tyres are a good tight fit.
No, I don't like much over 35 tbh.
jeesus are you a massive biffer?
Rider Weight in pounds divided by 7 = x
x - 1 = Front tire pressure in PSI
x + 2 = Rear tire pressure in PSI
Example: 185lb rider
185/7 = 26.4
Front tire pressure: 26 - 1 = 25 PSI
Rear tire pressure: 26 + 2 = 28 PSI
and at what width tyre?
and from memory the max pressure for a 2.3 on flow is around 35-38 psi (lower for a wider tyre), so take into account the inaccuracy of a tyre gauge and the fact you may be TOO HIGH on the pressures unless you a big unit and there may be your issue. I do wander how many of these Stans/tubeless problem threads is user error and not reading the bloody instructions first. 😀
the maxxis tyres are baggy as you like on the rims really no good for tubeless imo the specialized 2 bliss go on perfect never burped 1 of there tyres.
Weird I deflated my tyre. The bead IS hooked under the firmly even though the rim strip is in the way. Left it be and reinflated.
I'm quite tall, not skinny build, and while not tubby, I have some excess, presently 96kg, in total, not the excess.
No i usually run about 30 - 33. running tubes last summer I had my contis at 40+ as that's the advised pressure, didn't like it. Tyre in question is 2.1, but that's a maxxis 2.1 - so who knows.
Tony24. Ive got Ardent EXO (non-tubeless) on the NOS DTSwiss 6.1 rims. They are a real bitch to get on or off. Normally I can get a tyre on with just my hands so no probs here.
Tazzy and thisisnotaspoon have it.
I've set up my 2.35's on Crest's and run them at the rider weight divided by 7 and -1 front, -1 rear with good reliability.
RTFM 😀