Re: SRSG's

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

Original poster: "sundog by way of Terry Fritz <twftesla-at-uswest-dot-net>" <sundog-at-timeship-dot-net>

Hi all,

 Upon further searching (okay, I scrounged a bit more), I turned up
2 more motors suitable for small sync gaps.  1 has been spoken for
already, so that leaves 3.
  Upon disassembly of all 4 motors, all use dual ball-bearings (no
bushings), and all use thrust washers, making for a *very* tight
tolerance motor.  That just makes' em better for gaps.  I'll try to
scrouge more this weekend.
                                                Shad
-----Original Message-----
From: Tesla list <tesla-at-pupman-dot-com>
To: tesla-at-pupman-dot-com <tesla-at-pupman-dot-com>
Date: Thursday, December 14, 2000 7:19 PM
Subject: SRSG's


>Original poster: "sundog by way of Terry Fritz
<twftesla-at-uswest-dot-net>" <sundog-at-timeship-dot-net>
>
>
> Hi all,
>
> Whilst cleaning my garage up a bit, I ran across 2 small AC
motors similiar
>to the one I'm using in my SRSG located at
>http://sundog.timeship-dot-net/images/sync-gap.jpg
>That is the gap I was running when the pics of my 8" coil
(12kv150ma) were
>taken.
>http://sundog.timeship-dot-net/images/8-inch-running2.JPG
>here's a top view of the disc/motor.
>http://sundog.timeship-dot-net/images/8-inch-running2.JPG
>
>  I'll be converting them to sync operation, machining a disc for
8
>electrodes (240 or 120 bps operation), and putting 10x32 threaded
brass rod
>electrodes in them.  These motors work wonderful on low to mid
powered
>systems (up to ~1.5kva).  I haven't tried them on a MOT system,
but I think
>that would be to much current (heating of the flying electrodes)
for this
>gap.
>
>   The motors are 1800 RPM, and I'll grind them for salient pole
operation.
>I'll machine and mount a 4-4.5" polycarbonate disc drilled for 8
electrodes.
>The electrodes are 10x32 threaded brass rod, all brass hardware.
i am not a
>machinist, nor a SRSG engineer, so these won't be perfect, but I
will test
>them on my own system and make sure they work.  I have no real
need for
>these motors, and got them simply because they were cheap, i'm a
packrat,
>and I figured I'd ruin a few learning to make salient pole motors.
Phase is
>adjusted by rotating the disc on the motor shaft.    I'm aiming
for the
>coilers who don't have the ability (tools, skill, etc) to make
their own
>sync motor and disc.  Undoubtedly the disc is the hardest part to
make (most
>time-consuming for me anyway). Mounting them will require only a
little
>imagination and work, as 1 has a mounting flange with pre-drilled
holes, and
>the other has  case bolts to attach to.  Unfortunately, I only
have 2 of
>these at the moment, so it's first come, first serve. I'll only
ask the
>price of the parts, shipping, and a bit to cover my time (okay,
really it's
>to pay for the electricity to run my pole pig!) I'm looking at
~$20-30 total
>each (shipping, everything).
>
>  Please contact me directly at sundog-at-timeship-dot-net  I'll work on
these as I
>have time, so it'll take me a week or so to get them finished,
tested, and
>ready to go.  Do they work? Yep. Pics above are proof :)
> Shad
>
>
>
>
>
>