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Thread: 21x12-8 inner tubes?

  1. #1
    jonstark's Avatar
    Join Date
    Nov 2013
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    Ashfield, MA
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    149

    Default 21x12-8 inner tubes?

    Are any of you running inner tubes with the old ATV style wheels?
    If so are you using valve stems secured in the rim by nuts or just plain.

    Thx,
    jon
    Kitfox IV 1050, C180. Now I have two backcountry planes! WooHoo!

  2. #2
    Senior Member
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    Apr 2009
    Location
    Chisholm Mn
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    1,562

    Default Re: 21x12-8 inner tubes?

    I run tubes on my Kingfox tires which are same size as the Nancos, and the tubes are held in place with nuts on the valve stem inside and out. I did rip a valve stem off once when running to low of pressure and landed on pavement and spun the tire on the rim. JImChuk

  3. #3
    Senior Member Dusty's Avatar
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    Dec 2012
    Location
    Christchurch, New Zealand
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    378

    Default Re: 21x12-8 inner tubes?

    I run tubes with threaded stems. The stems have "o" rings to effectively seal the assembly if the tyre creeps and sheers the stem from the tube. The main reason I run tubes is I have witnessed the results of a ground loop where the tyre has pulled enough to deflate a tubeless setup with suboptimal results.
    The guys with tubes usually return home with wads of nature hanging out of their rims and excuses to be made.

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