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Schwalbe introduces Dual chamber tires for ultra low pressures

kidwoo

Artisanal Tweet Curator
That membrane between the two is going to have to be pretty tight if what I'm envisioning is what they're talking about.


moreschwalbeawesome.png

It's going to be tough to keep the weight negligible.

It's also going to define the profile a bit once inflated.

Part of 'the system' was that the secondary tire gets the air from the tube. I imagine this would ride quite a bit differently. Might be kind of neat if they do it right.

And if they do something with a truly flexible barrier.......well.......pressurized gas does funny things like that. Then they'll just have a tire with a squished chamber that doesn't do anything.
 
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'size

Turbo Monkey
May 30, 2007
2,000
338
AZ
Of course you’ll need a rim with holes for two valves.
so i guess there will have to be a valve attached to the outer chamber (basically just like a standard tube) that goes through the inner chamber and through the rim? assuming that valve needs to be air tight against the rim how will that not effect tire compression at that specific point?

moreschwalbeawesome.png
 

htrdoug

Chimp
Nov 25, 2001
66
0
So.Indiana
The concept sounds similar to the Tubliss system for moto. 100-110 psi in the inner (red) tube to act as a beadlock and rim protection, and 0-10 psi in the outer chamber for tractions:


Just put a Neutech Tubliss in my vintage Trials bike,work great and not to hard to install,the red inner is like a road bicycle tire with a thin tube inside and the gold plate has a second valve stem that bypasses the small tube. The red inner protects the rim from impacts no matter how low you go on pressure in the main tire. I'm running 1.5psi and traction is stellar. I figure you couldn't match the difference in weight vs. a standard DH tire though,but you'd have decent rim protection. I'd experiment but no way I'm spending money on road bike tires in 26 inch to do so. If I could score free tires maybe...
 

kidwoo

Artisanal Tweet Curator
So what 'problem' is this supposed to be solving?
All the weekend warrior bankers who buy schwalbe tires need something new to buy.



On an equally serious note (which is fully serious) I do wish there was something tougher than current 1.5 ply tires run tubeless. This probably won't fix that unless they can then use lighter casings because the design is a more complicated balloon that doesn't pop like regular tires do.
 
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General Lee

Turbo Monkey
Oct 16, 2003
2,860
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so i guess there will have to be a valve attached to the outer chamber (basically just like a standard tube) that goes through the inner chamber and through the rim? assuming that valve needs to be air tight against the rim how will that not effect tire compression at that specific point?

View attachment 114934
It's probably not a rigid steal valve in the traditional sense, I'd assume the space between the rim interface and the inner chamber is probably flexible.
 

djjohnr

Turbo Monkey
Apr 21, 2002
3,001
1,693
Northern California
All the weekend warrior bankers who buy schwalbe tires need something new to buy.



On an equally serious note (which is fully serious) I do wish there was something tougher than current 1.5 ply tires run tubeless. This probably won't fix that unless they can then use lighter casings because the design is a more complicated balloon that doesn't pop like regular tires do.
Have you tried the Super Gravity or Michelin Reinforced tires? The sidewalls are quite a bit thicker then EXO or Snakeskin.
 

Steve M

Turbo Monkey
Mar 3, 2007
1,991
45
Whistler
If they can pull this off, I think it will be brilliant. Potentially one of the best innovations we've seen for a while.
 

Samoto

Guest
Dec 16, 2013
402
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another new wheel standard? or everybody is gonna make another new hole on the rims?
 

Muddy

ancient crusty bog dude
Jul 7, 2013
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Free Soda Refills at Fuddruckers
I think you are unclear as to what is happening here.
Not really - I'd gone and panned focus on comments from many sources on the interweb, it's basically a formed and swedged tube for the inner, and I am not a fan of Tubeless systems. Some tires can be removed by hand and installed by hand and there is no way I am running just that going downhill.

There being a tube for panty-waisters like myself in the near future of this concept seems legit and as thorough the design can get.
 

toodles

ridiculously corgi proportioned
Aug 24, 2004
5,479
4,719
Australia
Sounds pretty cool actually - I'd be keen to give it a go. Flats suck, and anything that allows for good traction while preventing pinches and rim damage is a good thing IMO.
 

'size

Turbo Monkey
May 30, 2007
2,000
338
AZ
as most assumed, it looks like it is more similar to the nuetech system than the sweet drawing kidwoooo posted.

http://www.bikerumor.com/2014/02/08/schwalbe-x-syntace-dual-chamber-mountain-bike-tire-system-makes-super-low-pressures-safe-sound/
UPDATE: Schwalbe’s PR man just rang back with a bit more info: “Basically there’s an inner tube, but it’s not really a tube, it’s a new construction process. You can pump up to 60psi into the interior chamber and as low as 12psi on the outside, though it’s a bit squirmy that low.” Essentially, it’s a second chamber that uses that high pressure to provide the above mentioned security benefits by pressing the standard tire’s bead harder into the rim’s hook, but only takes up about half the total volume. They can’t say more than that until the patents are final. In the meantime, check out Nuetech’s similar (but Schwalbe says different) system for motorcycle tires to get a visual.
 

iRider

Turbo Monkey
Apr 5, 2008
5,648
3,089
Sounds pretty cool actually - I'd be keen to give it a go. Flats suck, and anything that allows for good traction while preventing pinches and rim damage is a good thing IMO.
Just out of curiosity: how many flats do people get running tubeless? Is there really a problem that needs to be solved?