[Prev][Next][Index][Thread]
Re: Rebuilding a neon
At 12:25 PM 8/8/96 -0600, you wrote:
>|> Subject: Rebuilding a neon
>|Subject: Re: Rebuilding a neon
>|> Subject: Rebuilding a neon
>
>>From Benson_Barry%PAX5-at-mr.nawcad.navy.milThu Aug 8 11:00:33 1996
>Date: Thu, 08 Aug 1996 07:29:00 -0400 (EDT)
>From: Benson_Barry%PAX5-at-mr.nawcad.navy.mil
>To: tesla-at-poodle.pupman-dot-com
>Subject: Re: Rebuilding a neon
>
>
>MIKE,
>
>I am currently in the process of rebuilding a jefferson 12/60. I got the
>core out by the following method:
>1. Place outer core on top of two cement blocks so that straight section is
>free to drop.
>2. Tie 2 ropes around straight core piece to hold it and the windings when
>the whole thing drops.
>3. Get a round punch with a flat end (about 1/2" ).
>4. Place the punch on one end of the straight piece just inside the outer
>core and hammer a little.
>5. Do the same thing at the other end of the straight core piece.
>6. Keep going back and forth until the center piece comes out (it is very
>tight).
>7. Put the windings in an ultrasonic cleaner with a solvent that dissolves
>tar (toluene worked for me).
>8. After about 10 sessions (2-4 hours each with fresh solvent) in the
>ultrasonic cleaner they will be
> ready to coat with insulation.
>9. I used red glyptol because it worked fine in my rebuilt 12/30 france. I
>layed the winding on some
> flat screen to let it drip. I brushed the red glyptol into the
>windings until it began dripping out
> the other side and then stopped until it dried. I kept doing this
>until the red glyptol stopped
> dripping out the other side. I put on just enough more to fill up to
>the edge of the paper. Then
> the winding is turned over and this side is filled up to the edge of
>the paper also. The finished
> winding thus produced was as hard as a brick. When I get to my third
>transformer (15/60
> jefferson) I will try slow curing epoxy to see if the coil can be
>coated without the formation of
> bubbles.
>10. Then solder 40 kv wire (or whatever is handy hv wire) to fine coil lead
>wire and wrap lead and
> entire winding with 1/2" wide kapton tape using generous overlaps.
>11. For the 12/30 france I used 1/16" teflon sheet in place of the original
>mica sheets between the
> coil and core after reassembly.
>I havent put the core back into the 12/60 jefferson yet. I plan to do it
>the same way that I took it out
>with a hammer and round punch. I will let you know if I am successful.
> Barry
> ----------
Barry (and others)
Thanks to all for the info on rebuilding my Jefferson neon.
I tried knocking out the straight core piece with a punch and
hammer but it wouldn't budge. Only succeeded in damaging the top
lamination. So I disassembled the main core layer by layer and about
half way through everything slid apart.
The red glyptol as a coating sounds interesting. Where can I get some
of this stuff? I had put a couple coats of polyurethane on to protect
the windings and was thinking about using RTV or hot glue to insulate
it from the core.
I also removed 3 shunts from each side to boost output. I have not
put the thing back together yet. Hopefully will get it together this
weekend.
Mike Hammer
mhammer-at-midwest-dot-net