RE: Notes-Questions-Article-All

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "David Dean by way of Terry Fritz <twftesla-at-qwest-dot-net>" <deano-at-corridor-dot-net>

HI

>Toroid Design:  Has anyone tried joing the ends of flex duct with a
>pressure tight seal.  If it could be done then the flexduct toroid could be
>slightly pressurized.  This would add more rigidity and immunity from small
>bumps.  If a seal is not possible then maybe a balloon or an innertube?

I tried that once. When the duct has pressure applied to the inside it has a
tendency to twist. Instead of a toroid, I ended up with a figure 8. Ruined a
good piece of 8" duct that way.

later

deano