[YellowBike] uber foam

[Adam Shapiro]

thats a pretty good idea.

sort of a foam filled sew-up tire.  you gotta think of a pretty creative
way to anchor it to the rim, though.   i think that'll be the weak point

as long as you are still using a conventional bead/hook tire you will need
to be able to mount it:  usually to be mountd, it will need to be flexible
(and not already full of a filling material.  thats why spray foam is
ideal for this...

once you move away from the beaded tire though...and on to a big rubber
hose, filled with foam and glued on to the rim surface.... you can
basically fill it first, and then mount it second.

lemme know how it goes.
adam

On Fri, 10 Dec 2004, Joshua Marvel wrote:

> Actually. What about the idea of taking rubber tubing (like the medical tubing Aaron mentioned,) bending it into a circle-y shape and filling that with the foam. it would be easier to avoid the lumpiness, I think. And would hold its shape better.
>
>
> "Rob[ert] Anderson" <rfa03 at stout.hampshire.edu> wrote:
> PVC, anyone? (as regards cheap, stiff tubing. it will bend with heat, as
> well, but i don't know just what sort of fumes it relases when it does so.
> i think using tubes is a great idea for the foam, if we just bought
> schraeder valve stuff and pulled out the valve bodies).
> Rob
>
> On Fri, 10 Dec 2004, Joshua Marvel wrote:
>
> > I'm thinking it wouldn't even have to be attached at the seam. If it's
> > stiff enough on its own, I don't think it will go anywhere. It might not
> > have the most fantastic ride quality (mushy i imagine) but it would be
> > cheap, durable, easy to install, and not a huge mess. Easy enough to try
> > out, anyways.
> >
> > -Josh
> >
> >
> > --- Aaron Wieler wrote:
> >
> > > I think "great stuff" is what adam was trying.
> > >
> > >
> > > here's what happened for him: it inflated and stayed firm, but it had a
> > > flat
> > > spot where the foam didn't reach. he said he had to work it around the
> > > wheel.
> > >
> > >
> > > I would like to try it inside a tube, maybe with 2 or 3 points of entry
> > > (cut
> > > a second valve hole into the rim. that way, we could cut off the tube if
> > > we
> > > needed to.
> > >
> > >
> > > another thought, which has been mentioned, is hard plastic tubing. I
> > > wonder
> > > if some really thick medical tubing might cut it, just wraped around a
> > > rim
> > > and welded or glued together at the seam. things to try...
> > >
> > > -aaron
> > >
> > > On 12/9/04 7:58 PM, "jbg04 at hampshire.edu" wrote:
> > >
> > > > try 'Great-Stuff' i just used it in a project. you spray it in as a
> > > whip
> > > > cream
> > > > like consistency and in an hour it blows up HUGE and it pretty sturdy
> > > stuff.
> > > > Its also uber-sticky... i mean uber. Its used to fill in cracks
> > > during
> > > > construction, and also insulation.
> > > >
> > > > jeff
> > > >
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