Re: Designing BIG Secondary Coil

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

Original poster: "by way of Terry Fritz <twftesla-at-qwest-dot-net>" <Parpp807-at-aol-dot-com>

In a message dated 9/6/02 8:22:07 PM Central Daylight Time, tesla-at-pupman-dot-com 
writes:

> Would suggest 18 to 24 in dia with a 4.5:1 height to dia. ratio.  36 x 8 in
>  toroid or 48 x 12 in toroid made inexpensively from McMaster-Carr flex-lock
>  aluminum duct hose, p/n 55335K for the 12 in. dia.and 55335K26 for the 8 
in.
>  dia x 25 ft length ---both under $20.

Check McMC 5525K37 and similar ducting. This ducting is seamless and one 2 1/2
foot length expands to 15 feet. It is much easier to work with than the 
Flex-Lock and
can be sized simply by pulling or squeezing the finished toroid.


Happy day,
Ralph Zekelman