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New double skin tyres, hard on the inside to keep the bead seated, soft on the outside for grip.
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it's a bit Spanish but the pictures are in English...
[url= http://www.todomountainbike.es/art/sorpresa-sorpresa-nuevo-sistema-rueda-neumatico-de-doble-camara-a-la-vista ]http://www.todomountainbike.es/art/sorpresa-sorpresa-nuevo-sistema-rueda-neumatico-de-doble-camara-a-la-vista[/url]
Pretty neat 🙂
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Should really have put the two valves opposite each other, surely? Balance out that extra rotating mass!
I think they should have been put at 115 degrees to each other. You'd never get the logo's lined up that way 😉
That inner bladder looks an awful lot like a tube to me...
So its basically a road tube with an MTB tyre?
Haven't we done this twice in English already!?
[url= http://www.bikerumor.com/2014/02/08/schwalbe-x-syntace-dual-chamber-mountain-bike-tire-system-makes-super-low-pressures-safe-sound/#comments ]Words and pictures[/url].
Good idea - just make the tube the same side as the tyre and your on to something
Courtesy of Google Translate:
"The Schwalbe and Syntace known firms are combining their expertise and resources to develop a new idea that promises to revolutionize the world of indoor cycling : a new wheel-tire system with dual camera for the latter . The benefits of this system: ability to shoot low ( very low ) pressures on deck, more grip on all types of terrain, substantial improvement in the control of the bicycle and also greater protection against shocks and tires / undercuts or cover unexpected .
As you probably know , the performance of a mountain covered improves significantly when shooting at low pressures , offering more grip and control in all types of land (mostly abrupt ) . The problem of shooting with low air pressure on the decks is none other than the increased risk of suffering a puncture , pinching and / or beating on the bike tires , all ingeniously solved by the new (and very next ) wheel-tire system developed by Schwalbe and Syntace signatures.
The concept of this new system is very simple and ingenious , similar to that developed by Nuetech system. Basically, it tries to place two air chambers inside the cover. In the innermost part (near the rim ) , a chamber of high pressure air is charged with protecting the rim and tire to avoid undercut , plus tweaks , twists and all the air leaks on the edge of the rim. On the outside ( near the tread ), another tube handles provide maximum grip and control over the wheels , allowing carry very small air pressure without any associated risk.
Thanks to this new dual camera , Schwalbe and Syntace will offer us the ability to roll with a minimum air pressure of 12psi (less than 1 BAR ) in the outer chamber of our decks while the other air chamber (up to 60PSI ) will be responsible for maintaining our well protected from obstacles wheels. According to both companies, all runners who have tried this new solution is really good :
" The grip of the tires to 14 PSI is amazing. The contact area is very large and tires rarely , if ever , slip on loose soil . Even in the most difficult terrain tires stick to the ground .. . literally. "
This dual camera system is being designed to run on all types of roofs and wheels, tires assuming that include a second port for extra valve. With weighing nearly 200 grams of weight dual camera, Awaiting more details about this new system developed by Schwalbe and Syntace . Probably will be presented during the next edition of Eurobike 2014 with more precise information about its design, prices and patents pending. Coming soon , more details."
Courtesy of Google Translate:
They still have some work to do on Google Translate then 😯
Surely at 14psi the whole tyre will just squirm really badly, a bit like a flat tyre.
Except it's only the top bit, it's all reinforced by the 'inner' tyre at a higher pressure, which I imagine will minimise squirming. It's an interesting theory.
I think with the 'tube' holding the walls firmly on the rim it limits movement to just the upper half of the tyre so it's not constantly trying to roll off the rim.
Haven't we done this twice in English already!?
Yes, the second one (chronologically) was my fault. It does look interesting; only slight worry is that it'll mean new rims, and Syntace stuff appears to be made from unicorn horn judging by the price.
How much? That is question, guessing not cheap 😉
Yeah I sort of get it, the High pressure tube maintains the bead seat and stabilizes the inner portion of the carcass, while the "Tubeless" outer circumference can be at a much lower pressure, partly because the inner portion of the carcass is stabilized and partly because the tyre volume is significantly less so under compression it ramps up more.
Hence more deformation at the tread means more grip, while less deformation in the the bead/sidewall prevents squirming...
Bit of a Faff though innit, and what happens if you get a flat on the trail?
Just Bung in a normal tube? Or try to fix and re-inflate both air chambers?
Bit of a Faff though innit, and what happens if you get a flat on the trail?
Just Bung in a normal tube? Or try to fix and re-inflate both air chambers?
I assume sealant in both sections?
Perfect solution for those tyres where the labels aren't directly opposite.