RE: Stacking Variacs - shaft material
Steel shafts are fine. They are used by manufactures in their big Variac
stacks. Check out
http://fp2.hughes-dot-net/brianb/pictures/tesla/controller4.JPG It used three
steel shafts connected with chain and sprockets.
From: Tesla List [mailto:tesla-at-pupman-dot-com]
Sent: Wednesday, February 09, 2000 6:12 AM
Subject: Re: Stacking Variacs - shaft material
Original Poster: Bunnykiller <bigfoo39-at-idt-dot-net>
Tesla List wrote:
> Original Poster: Eric Leighton <ELeighton-at-portdiscovery-dot-org>
> I want to stack the two 10A variacs I have, and want to know what material
> the shared shaft has to be. The original shaft is 3/8" aluminum, and I
> some 3/8" stainless tubing that I think will work, as long as it doesn't
> have to be aluminum. I figured that plain old (magnetic) steel might not
> so good for a shaft that goes through the core, no?
> I'll ask about the choke I'll need for ganging these later, after I've
> reviewed what I found in the archives.
> Eric Forsman
Hi Eric ...
stainless shaft is ok if you are worried about magnetic effects 316SS
is nonmagnetic ( actually really low magnetic) see if a magnet sticks
to your shaft if it does most hardwares and home depots carry
aluminum shaft material...