Re: Funnels

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

Original poster: "robert & june heidlebaugh by way of Terry Fritz <twftesla-at-qwest-dot-net>" <rheidlebaugh-at-desertgate-dot-com>

John: The use of a cone center would allow a productrion assembly of coils
in a school or similar use. The use of long taper funnels would not serve as
well as a short taper hard wood cone. A long taper or a plastic funnel would
deform and cause an off center condition as well as allowing the mount point
to move far from the end causing an end to end wobbel. A steep 60o cone
would serve better. I just cut a scrap of 2x4 lumber ,cut the ends less than
90o,and press it in as a force fit. I then mark and drill my center and
throw the scrap in the fireplace when finished making my coil. Next year or
so I repeat as neaded.
    Robert  H
-- 


 > From: "Tesla list" <tesla-at-pupman-dot-com>
 > Date: Sun, 22 Dec 2002 19:54:03 -0700
 > To: tesla-at-pupman-dot-com
 > Subject: Funnels
 > Resent-From: tesla-at-pupman-dot-com
 > Resent-Date: Sun, 22 Dec 2002 19:55:24 -0700
 >
 > Original poster: "John Richardson by way of Terry Fritz 
<twftesla-at-qwest-dot-net>"
 > <jprich-at-up-dot-net>
 >
 > Hello,
 >
 > This is another one of my barely relevant ideas, but here goes.  The recent
 > thread on secondary winding techniques got me thinking:  Instead of having
 > end caps turned to fit each secondary pvc pipe, why not obtain two large,
 > identical plastic funnels, the ones with a smallish hole in the middle, but
 > with a large taper.  I have seen them for sale for as low as a buck apiece,
 > and with one on each end of your homemade "threaded rod" winding jig, it
 > would be an easy matter to adjust back and forth for varying lengths.  The
 > taper of the funnel would also allow different size secondaries to be
 > "chucked up", and the funnels taper guarantees that the pvc is centered on
 > the jig.
 >
 > John Richardson
 >
 >