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Any suggestions for DH tube usage on trail bike

Discussion in 'Downhill & Freeride' started by bizutch, Dec 13, 2012.

  1. bizutch

    bizutch Delicate CUSTOM flower

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    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?
     
    #1 -   Dec 13, 2012
    Last edited: Dec 13, 2012

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  2. Dogboy

    Dogboy Turbo Monkey

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    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.
     
  3. bizutch

    bizutch Delicate CUSTOM flower

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    Do you have a sample in your quiver Obi Wan?
     
  4. kidwoo

    kidwoo Celebrating No-Pants Day

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

    in the trees Turbo Monkey

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

    kidwoo Celebrating No-Pants Day

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    But they're backwards!
     
  7. kazlx

    kazlx Patches O'Houlihan

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  8. Verskis

    Verskis Monkey

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

    goodgrief Monkey

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    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
     
  10. slyfink

    slyfink Turbo Monkey

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    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.