They are not inner tubes in the traditional sense. They are an inner
tire. The have two places where the tires seat against the rim and
two valve stems. They run like 20 psi higher in the inner tire than
the outer one so the handling is OK. Every once in a while, the
inner tire leaks and raises the pressure in the outer (real)
tire. They call that "equalizing" and it really messes with the
handling. The inner tire is to give some semblance of control when a
tire bursts on a super speedway. They certainly help them in that
case. Makes the wheel assembly heavy as heck.
Back to the original tubes question, with panasports and any kind of
tire - bias or radial, there's no reason to run tubes. Hoosier
vintage TD, Dunlops, Hoosier speedsters, etc all hold air well enough.
- Tony Drews
At 07:35 PM 8/17/2009, Andre Rousseau wrote:
>Don't the Nastycar guys run inner tubes on the super speedways?
>
>A.
>
>2009/8/17 Bill Babcock <Billb@bnj.com>:
> > Tubes? They still make those?
> >
> >
> > Sent from my iPhone
> >
> > On Aug 17, 2009, at 2:46 PM, Jerry Barr <jerrybarr@charter.net> wrote:
> >
> >> Scott and I are sharing a Spitfire 1500 with Panasport rims and Yokohama
> >> Advan A048 tires with radial tubes. We have had 2 tube failures in the
>last
> >> 2 races. I took the tire to the on track tire store and the technician was
> >> asking why we are using tubes it this tire. I had no real answer except
>that
> >> is what we alway did, he told me there is no real reason to use a tube in
>a
> >> radial race tire. What is your opinion?
> >>
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>
>--
>Andre Rousseau - andre@gt6.ca
>'68 Triumph GT6 MK1 - http://www.gt6.ca/
>'77 FIAT 124 Vintage Racer #515 - http://www.124racer.com/
>Ottawa, ON, Canada
>
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