Re: inflatable torroid

What a neat idea!  A kid's inner tube at Kmart is about 20-25" in diamter
and would work very well.  I might have to try that.  Any word on the paint
eating through the rubber surface?

-----Original Message-----
From: Tesla List <tesla-at-pupman-dot-com>
To: tesla-at-pupman-dot-com <tesla-at-pupman-dot-com>
Date: Saturday, July 24, 1999 3:22 PM
Subject: Re: inflatable torroid

>Original Poster: "Alex Crow" <user-at-alexcrow.clara-dot-net>
>I was thinking of large inner-tubes as a possibility. You could spray
>conductive paint onto the surface of the tube and if this didn't crack when
>it dried it should work OK. Some people I think have had success with foam
>toroids coated with graphite or similar.. so this should be possible.
>However inner-tubes are now rare of course - perhaps kid's inflatable rings
>might be an alternative, or a cheap inner from a fishing float-tube. If
>paint doesn't work, I would think that you could glue on coarse
>aluminium/copper powder or particles.
>Alex Crow
>From: Tesla List <tesla-at-pupman-dot-com>
>To: tesla-at-pupman-dot-com
>Subject: inflatable torroid
>Date: 24 July 1999 01:10
>Original Poster: Terry Fritz <twftesla-at-uswest-dot-net>
>Hi All,
> I was wondering about a torroid made from metalized mylar or some other
>inflatable metal coated plastic.  The home center store as heating duct
>that looks like it is some thin plastic coated with aluminum and supported
>by a spiral spring wire to give the tube shape.
> I was wondering if the thin metal over plastic coating would just burn
>away or if such tubing could be of use.  The pipe looks like it would be
>stronger than typical aluminum duct when it comes to getting banged around.
> Also one should be able to make or find the materials to make an
>inflatable torroid out of metal coated plastic like those party balloons
>and some food products come in.  I wonder if it would have bad RF
> I have never tried any of this but though I would see if anyone has only
>thoughts on this.  The big aluminum duct torroids can get smashed easily
>and they sure take up a lot of room (especially in the car).  An inflatable
>version would sure be neat if it would work.
> Terry