Any suggestions for DH tube usage on trail bike

[bizutch]

I found out last week the hard way that the rear wheel on my trail bike has a very tall profile rim. It's a Cane Creek Duros but I use DH tubes, SCHRAEDER valves. They don't extend far enough through the rim for the pump to get a good bite on the valve stem.

I sat there pumping the tire about a half psi per minute. Luckily it was a DH tube, so I was able to roll out for the last few miles on 10 PSI. But now I've got easily a dozen or more trail and DH tubes that I might not be able to use on this rear wheel. Buying a real wheel isn't an option.

Any creative or overlooked solutions?

[Dogboy]

A pump with a thread-on chuck - like Lezyne uses. All you need is the threaded part of the valve stem coming through the rim.

[bizutch]

A pump with a thread-on chuck - like Lezyne uses. All you need is the threaded part of the valve stem coming through the rim.

Do you have a sample in your quiver Obi Wan?

[kidwoo]

Or just quit running stupid heavy tubes on your trailbike and run a stupid heavy dh tire setup tubeless instead.

[in the trees]

Schwalbe tubes have a threaded stem and collar like a Presta valve. They are also available in a variety of thicknesses.

[kidwoo]

Schwalbe tubes have a threaded stem and collar like a Presta valve. They are also available in a variety of thicknesses.

But they're backwards!

[kazlx]

Lezyne pumps are sweet. I use this: http://www.lezyne.com/products/hand-...r-Drive-HV/HVG

Threading on the stem is awesome. Takes a bit longer to thread on and off, but meanwhile, you aren't fighting the leaks or trying to get it to seal. But yes, you should also convert to tubeless....

[Verskis]

But they're backwards!

I run them the other way around for increased performance in the corners.

[goodgrief]

continental do a 52mm valve
but seriously if you need the extra protection I would run a dh tyre tubeless with a harder compound like a maxxpro 60a

[slyfink]

don't they make screw-on valve extenders for those deep-section road wheels? I haven't seen them, but my understanding is you unscrew the valve core, and then screw on the extender... and voilà, a few extra " of valve stem.