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PMB World Cup: Found in the pits – Schwalbe Dual Chamber

· By BikeHubCoreAdmin · 11 comments

The revolutionary dual chamber system revealed by Schwalbe not too long ago was spotted in the Pietermaritzburg pits. There were a few riders on them for the DH and we could be seeing them more and more throughout the year.

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The new dual chamber system needs special rims that offer two different valve holes for each chamber.

Seen in Magic Mary 27.5 form here, the Schwalbe dual chamber tyres should see a release date sometime in the middle of this year. They will first be released in the trail/all mountain focused treads, but should find their way onto all of Schwalbe’s mountain bike offerings.

The first smaller chamber hugs the rim and will be a much higher pressure than the second. The second and bigger chamber will be where traditional tyres would hold all the air. The first chamber’s job is to keep the rim safe from hard impacts and prevent pinch flats. It will be able to hold about 5 bar of pressure, maintaining a hardness that will protect the rim from dents, while allowing the second chamber to run significantly less pressure, even compared to tubeless tyres. The bigger, second chamber will be able to run pressures below 1 bar, though that might not be the most efficient with rolling resistance.

Brendan Fairclough and Andrew Neethling were a couple of the riders that were testing out these tyres.

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Schwalbe Magic Marys

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The rims here are limited edition DT Swiss items. Schwalbe will surely be speaking to many rims manufacturers about their new system

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Comments

Capricorn

Apr 13, 2014, 12:22 PM

awww you guys did NOT disappoint! :D

Caerus

Apr 13, 2014, 1:01 PM

Would love to know what the cross section looks like through those rims & tyres.

johannrissik

Apr 13, 2014, 1:20 PM

There's an eccentric inventor in Velddrif who was doing something similar a few years back..:)

Capricorn

Apr 13, 2014, 1:36 PM

Would love to know what the cross section looks like through those rims & tyres.

 

there's precedent in the MX world. I wouldn't be surprised if the MTB version is a clone thereof, with slight changes to accomodate for the field of application. Check out Neutech tubliss

Caerus

Apr 13, 2014, 1:53 PM

there's precedent in the MX world. I wouldn't be surprised if the MTB version is a clone thereof, with slight changes to accomodate for the field of application. Check out Neutech tubliss

I see that they use a tube inside, it's effectively running a tube inside the actual tubeless tyre. I would love to know what the high pressure tubes would be made from.

 

Would this application be better suited for a particular type of riding, ie enduro or DH?

Capricorn

Apr 13, 2014, 2:20 PM

I see that they use a tube inside, it's effectively running a tube inside the actual tubeless tyre. I would love to know what the high pressure tubes would be made from.

 

Would this application be better suited for a particular type of riding, ie enduro or DH?

 

Any riding that involves reliability while hitting the gnar at speed. the aim of the system is to provide ridiculous amounts of grip while minimizing the typical problems associated with lower tyre pressure to achieve more grip. Pretty much discounts XC of all flavas because this will not be for the weight weenies.

So yes, DH and Enduro automatically qualify as suitable applications. Will be interesting to hear A Neethlings experiences with the system

Shebeen

Apr 13, 2014, 3:24 PM

i'm guessing if you want to screw your buddy over, you let some air out the one and swap the red and black valve caps around while he's not looking.

 

he he

(Deon)

Apr 14, 2014, 2:05 PM

Call me crazy but would it not make more sense to have the second valve on the opposite side of the rim?

 

 

Capricorn

Apr 14, 2014, 2:18 PM

Call me crazy but would it not make more sense to have the second valve on the opposite side of the rim?

 

 

 

 

well, answer this : even with just one valve, did you detect any perceptible wobble or imbalance on any of your past and current bikes, with or without a valve cap?

(Deon)

Apr 14, 2014, 2:26 PM

well, answer this : even with just one valve, did you detect any perceptible wobble or imbalance on any of your past and current bikes, with or without a valve cap?

That's a resounding yes... gets quite wild the faster the wheel spins
Capricorn

Apr 14, 2014, 3:00 PM

That's a resounding yes... gets quite wild the faster the wheel spins

 

lol. rubbish. unless you are seriously hormonal, it can't be felt while riding. like practically impossible. I would love to stick a pea under a mile high mattress and then see how you sleep on it all.

 

 

tsk tsk.. such a fine princess...

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