Steve Smiths Tubes and Tubeless

[heavyp]

http://www.moredirt.co.uk/features/UCI-DH-World-Cup-2013-Fort-William---Pit-Snaps/4376/

As we went to photograph Stevie Smith's Devinci Carbon Wilson the mechanic slipped over to hide the rear end... After some more snooping we spied a flash new rear mech! Interestingly you can see that on the rear wheel is running both a tube and tubeless!

 

[B.utters]

Marc Beaumont was running a similar setup last year or the year Before I think.

 

[indica]

I recall a few have done that before?

 

[SPECIALIST]

http://www.moredirt.co.uk/features/UCI-DH-World-Cup-2013-Fort-William---Pit-Snaps/4376/
View attachment 266076
As we went to photograph Stevie Smith's Devinci Carbon Wilson the mechanic slipped over to hide the rear end... After some more snooping we spied a flash new rear mech! Interestingly you can see that on the rear wheel is running both a tube and tubeless!

4wd competition wheels do this also ...........run a special type of tube inside of a tubeless tyre so to run low presure for more traction.
The tube supports the bead from rolling off the rim

 

[Ivan]

4wd competition wheels do this also ...........run a special type of tube inside of a tubeless tyre so to run low presure for more traction.
The tube supports the bead from rolling off the rim

like "tubliss" for motos

 

[allan.taylor64]

Steve did this at world champs. I think he did this at Norway too.

 

[ben_rides_a_bike]

4wd competition wheels do this also ...........run a special type of tube inside of a tubeless tyre so to run low presure for more traction.
The tube supports the bead from rolling off the rim

Beadlock wheels, like you said, allows them to run ultra low pressures without the tire coming off.

 

[mxdame]

I have been running a tube inside my tubeless set up for about 12 months now (put the tube in at a race when i got a rock through the tyre) & wasnt till I changed a tyre that I noticed a bunch of pinch flats in the tube, but the tyre wasn't going flat. Not the most weight saving set up, but dont have to worry to much about getting a flat.