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Old 2018-07-08, 04:44 AM   #1
rrurban
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Tubeless

I recently went tubeless on a 27.5x42mm Dominator 2 rim and 27.5 x 3.0 Schwalbe Nobby Nic. I run it at 24 psi and love the feel but I just rode 5 miles of downhill and the tire burped 5 times. It didn't actually lose a noticeable amount of pressure but I'm concerned that I'll eventually get a flat. Does anyone else run a tubeless set-up and what are your experiences with it?
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Old 2018-07-08, 07:11 AM   #2
Fat D
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Hi,

I run a Duro Crux (29 x 3.25) on a Mavic EN827 rim. I run it down at 15psi with no issues so for.
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Old 2018-07-08, 12:54 PM   #3
haskinsc
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Blowout

I experimented with tubeless a few years ago on a 29" Dominator 42mm rim and Stans sealant. Can't recall the tire at the moment but it blew out landing a 8-inch drop (not very high) onto an off-camber surface. The tire didn't rupture, it just folded off the rim.

I suspect that most tire sidewalls are not sufficiently strong enough for muni with all the weight on one tire. They're designed for bikes where the weight is more distributed.

Anyway, that blowout ended my tubeless experiment.

- Cheers
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Old 2018-07-09, 07:16 AM   #4
kunstrasen
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Hi,

I run almost the same tire tubeless: Nobby Nic 27,5 x 2.8, Apex (reinfored sidewalls) with 1,1 bar on a Dartmoore revolt rim (Mtb DH rim). I do not have any burping , as I use the Schwable Procore system.
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Old 2018-07-09, 10:55 AM   #5
Vogelfrei80
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Quote:
Originally Posted by rrurban View Post
I recently went tubeless on a 27.5x42mm Dominator 2 rim and 27.5 x 3.0 Schwalbe Nobby Nic. I run it at 24 psi and love the feel but I just rode 5 miles of downhill and the tire burped 5 times. It didn't actually lose a noticeable amount of pressure but I'm concerned that I'll eventually get a flat. Does anyone else run a tubeless set-up and what are your experiences with it?
What kind of tubeless conversion did you try? I'm using the "cutted" small inner tube instead of the strip and it is going flawless since 2 months, but I ride pavements nor any drop or trick. Veetire Speedster tire, 26" twofour disc rim with cutouts, rim strip, 20" inner half tube, sealant applied with care also on the lower part of sidewalls
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Old 2018-07-09, 02:52 PM   #6
pstrick
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I think the Dominator 2 may not be the best rim for running tubeless. I've used a Velocity Blunt 35mm for a few years on a 29" and 26", both with Schwalbe Hans Dampf and have never gotten a flat. Yes, there can be some burping on off-camber lands. It adds another factor to consider for me when planning my lines. Whereas with my 26" Hatchet and big tire, I can land off camber and not think about it.
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Old 2018-07-09, 02:58 PM   #7
Alice Arctan
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Magic Mary on Blunt 35, Floater on Rolling Daryl, no probs.
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Old 2018-07-10, 08:55 PM   #8
MrImpossible
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I run tubeless on my 27.5+ QU-AX, which comes with a tubeless ready rim, and a 3.0 WTB Bridger tire, also tubeless ready, but I had to add a split tube liner to make it work. Without the liner I got a lot of burps.

I couldn't get my 26" Nimbus with the Dominator 2 rim to work, even with a split tube liner. Burps galore. That one was using a 2.8 WTB Ranger tire.
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Old 2018-08-21, 06:24 AM   #9
rrurban
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Update: I ran a tubeless 27.5 on a Dom2 rim and after 3 rides and endless burping I went back to riding with tubes. Anything over a 6" drop would normally cause burping. No way was I confident to do a 2ft drop. I must say it did ride really well but the burping was just to consistent.
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Old 2018-08-21, 10:06 AM   #10
Eric aus Chemnitz
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Which method did you use for the tubeless conversion?
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Old 2018-08-21, 12:21 PM   #11
kunstrasen
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Quote:
Originally Posted by rrurban View Post
..... I must say it did ride really well but the burping was just to consistent.
Agreed, burping is shit. And running tubeless with a higher pressure than needed to avoid burping also makes no sense.
If you like the smooth, low resistance feel of tubeless and the excellent damping with low pressure, this is an option as mentioned before:

https://www.schwalbe.com/en/procore.html

I am happliy running it since 2 years on the Muni. I do controll both pressures before I make a longer tour, but I do not even take a pump anymore in my backpack.

Pros: Bombproof against burping, prevents damage on rim on hard hits, easy setup as the inner "tire" seals the tire against loosing air.

Cons: Similar weight as a tube setup (no saving). Price (only once, you can reuse). You have to check 2 pressures (like on a bike )
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