Tubeless tires

 Just ran across this:

Tubeless operation with conventional tires?  Seems cool.

http://www.niksindustries.com/pages/tubliss.php

JayC

 
Looked at that a bit ago, not sure I'd see much benefit.

Have ripped out a valvestem once, though. My punctures tend to be huge
gouges, though.

Dave

 
The benefit is supposed to be that you can run high pressures (up to
about 100 psi) in the small tube which protects the rim against
impacts (somewhat) and prevents pinch flats. It also seals between the
inside of the beads immulating a tubeless air chamber. You can run
really low pressures in this chamber. so you can have low pressure
traction with high pressure protection... I would think it would be
really trick when using trials tires on dirt bikes. It provides some
run flat protection when you get a hole in the outter chamber only.
Also it is supposed to make tire changing an absolute breeze. You
should be able to run slime/tire sealant type products effectively in
the tubeless chamber as well to seal small punctures.

It's been pretty well discussed over on KTMTalk and has recieved
pretty good reviews from those that have tried it.
Apparantly it is not impossible to bust one of these though, in which
case you've just had a $100 flat...

I will probably end up them them front/rear when the 21" and 18"
become available (only 19" available right now).

 Looking at the pics, sorry but that tire is a tire and TUBE all in one, not
like a trials tire.  All we do in trials rims/tires is have a nice tight rim
and a big rubber (sealing) band where that thin rubber spoke ribbon goes.

The benefit is supposed to be that you can run high pressures (up to
about 100 psi) in the small tube which protects the rim against
impacts (somewhat) and prevents pinch flats. It also seals between the
inside of the beads immulating a tubeless air chamber. You can run
really low pressures in this chamber. so you can have low pressure
traction with high pressure protection... I would think it would be
really trick when using trials tires on dirt bikes. It provides some
run flat protection when you get a hole in the outter chamber only.
Also it is supposed to make tire changing an absolute breeze. You
should be able to run slime/tire sealant type products effectively in
the tubeless chamber as well to seal small punctures.

It's been pretty well discussed over on KTMTalk and has recieved
pretty good reviews from those that have tried it.
Apparantly it is not impossible to bust one of these though, in which
case you've just had a $100 flat...

I will probably end up them them front/rear when the 21" and 18"
become available (only 19" available right now).

 

Technically, it's neither... and both.  The outter chamber is
tubless... as there is no tube touching the inside of the tire in the
tread area or sidewalls. The small high pressure tube takes the place
of the "big rubber (sealing) band" that you use.


Note: the correct spelling of this product's name is Tubeliss... not
Tubeless.