ray j willings said:King Boonen said:ray j willings said:DeanEasy (named for its inventor, Alberto Deanesi, pronounced “day-on-ay’-zee”) has a Tufo tubular tire without tread on it that is inflated to high pressure (up to 8 bar, or 116psi) through a Presta valve. Surrounding the Presta valve is an air collar connected to an aluminum Schrader valve coming off at an angle; it allows inflation of the (sealant-filled) tubeless tire that surrounds the tubular. The tubular, like the high-pressure inner chamber of Schwalbe’s ProCore and of the Michelin DH system, presses the tubeless tire’s beads outward against the rim walls and prevents burping when cornering hard, even at pressures in the outer tire as low as 1 bar (14.5psi). It also prevents pinch flats and rim damage when banging rocks at such low pressure
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It's a good idea, it just doesn't seem to work...
That's a shame. That looks like a great idea and just having an angle to use a normal pump would be great.
Yep, it's a fantastic idea for MTB, but loads of Schwalbe athletes have still been rolling their tyres off. I think the problem is that as they run their pressures lower and lower, the contact patch of the tyre increases and the grip goes up. Sounds brilliant for downhill but these guys are putting huge forces through the wheels round corners and things and I'm guessing it's literally pulling the tyre off the rim.
Personally, I still don't "get" tubeless...