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Re: Problems with SRSG on TC

To: tesla-at-pupman-dot-com
Subject: Re: Problems with SRSG on TC
From: "Tesla list" <tesla-at-pupman-dot-com>
Date: Sun, 06 Jul 2003 11:09:11 -0600
Resent-Date: Sun, 6 Jul 2003 11:20:14 -0600
Resent-From: tesla-at-pupman-dot-com
Resent-Message-ID: <7AGfpB.A.M5H.NpFC_-at-poodle>
Resent-Sender: tesla-request-at-pupman-dot-com
Original poster: "Barton B. Anderson by way of Terry Fritz <teslalist-at-qwest-dot-net>" <classictesla-at-netzero-dot-com>

Hi Chris,

If you haven't gone through all your connections, it's a good time to. I'm 
at a loss of where the problem is other than what has been mentioned 
previously. Maybe some more info on events will reveal something, like how 
your SRSG is built, etc.. Also, if there are any odd sounds when the firing 
stops (transformer or whatever).

Take care,
Bart


Tesla list wrote:

>Original poster: "Zagarus Rashkae by way of Terry Fritz 
><teslalist-at-qwest-dot-net>" <arbitrarily_random-at-yahoo-dot-com>
>
>Hi Bart, All,
>
>I made some phase adjustments, but only in 15 degree
>or greater increments. I have a 240BPS SRSG, so I am
>only adjusting phase by +- 45 degrees. The sporadic
>firing is still occurring.
>
>Thanks,
>
>Chris
>
>--- Tesla list <tesla-at-pupman-dot-com> wrote:
> > Original poster: "Barton B. Anderson by way of Terry
> > Fritz <teslalist-at-qwest-dot-net>"
> > <classictesla-at-netzero-dot-com>
> >
> > Hi Chris,
> >
> > Nope, it doesn't. If your that close, it's not an
> > issue.
> > Have you made any phase adjustments yet?
> >
> > Take care,
> > Bart
> >
> > Tesla list wrote:
> >
> > >Original poster: "Zagarus Rashkae by way of Terry
> > Fritz
> > ><teslalist-at-qwest-dot-net>"
> > <arbitrarily_random-at-yahoo-dot-com>
> > >
> > >Hi Bart, all,
> > >
> > >I just measured the gap spacing and it is .05 on
> > each
> > >side, for a total gap of .1. Sorry for any
> > confusion I
> > >may have caused.
> > >
> > >I don't see how this would explain the erratic
> > firing.
> > >
> > >Regards,
> > >
> > >Chris
> > >
> > >--- Tesla list <tesla-at-pupman-dot-com> wrote:
> > > > Original poster: "Barton B. Anderson by way of
> > Terry
> > > > Fritz <teslalist-at-qwest-dot-net>"
> > > > <classictesla-at-netzero-dot-com>
> > > >
> > > > Hi Chris,
> > > >
> > > > total gap is .7 or .07? (the " .35 on each side"
> > > > threw me off as it could
> > > > go either way = really narrow or really wide).
> > > >
> > > > If 0.7, then it may very well be too wide. We
> > > > typically run narrow gap
> > > > spacing (but not as narrow as 0.035" per side).
> > I
> > > > run approximately 0.1 to
> > > > 0.12 on each side of the gap (1/4" or less total
> > > > gap). The phasing is
> > > > intertwined. If you have no way of measuring,
> > trial
> > > > and error will work
> > > > (moving disk on motor shaft in say 5 degree
> > > > increments).
> > > >
> > > > Take care,
> > > > Bart
> > > >
> > > > Tesla list wrote:
> > > >
> > > > >Original poster: "Zagarus Rashkae by way of
> > Terry
> > > > Fritz
> > > > ><teslalist-at-qwest-dot-net>"
> > > > <arbitrarily_random-at-yahoo-dot-com>
> > > > >
> > > > >The total gap is maybe .07 inches, .35 or so on
> > > > each side. I don't think
> > > > >that is the problem as the TC "off" time is 10
> > > > seconds or so, then 5
> > > > >seconds of operation, etc...
> > > > >
> > > > >Regards,
> > > > >
> > > > >Chris
> > > > >
> > > > >Tesla list <tesla-at-pupman-dot-com> wrote:
> > > > >Original poster: "Barton B. Anderson by way of
> > > > Terry Fritz "
> > > > >
> > > > >Hi Chris,
> > > > >
> > > > >How wide is the RSG gap (stationary to
> > rotating)?
> > > > If it's too wide, your
> > > > >cap may be firing at too high a voltage and
> > > > somewhat randomly along the RSG
> > > > >path. If a firing is missed, the cap "may"
> > continue
> > > > to charge to a higher
> > > > >voltage if the transformer is capable. This
> > relates
> > > > to the RSG firing
> > > > >intermittently (not at the 240 BPS you may
> > assume
> > > > it is) and often leads to
> > > > >the safety gap firing intermittently. BTW, at
> > 240
> > > > BPS, phase off-peak about
> > > > >23 degrees. (where voltage and current curves
> > > > cross).
> > > > >
> > > > >Take care,
> > > > >Bart
> > > > >
> > > > >Tesla list wrote:
> > > > >
> > > > > >Original poster: "Zagarus Rashkae by way of
> > Terry
> > > > Fritz
> > > > > >"
> > > > > >
> > > > > >Hi Steve, All,
> > > > > >
> > > > > >I did m! odify the motor so that it was
> > > > synchronous
> > > > > >without the disk, I don't know what it is
> > with
> > > > the
> > > > > >disk and electrodes. I am running at 240bps
> > or 2
> > > > > >breaks per half cycle so I don't know why
> > losing
> > > > sync
> > > > > >would make the TC perform like that.
> > > > > >
> > > > > >I have 2 saftey gaps, one across the cap and
> > one
> > > > > >across the transformer. The transformer one
> > is in
> > > > > >parallel with the SRSG, so I think it's okay.
> > > > Both
> > > > > >gaps are set to around 15-20kV.
> > > > > >
> > > > > >Regards,
> > > > > >
> > > > > >Chris
> > > > > >
> > > > > >--- Tesla list wrote:
> > > > > > > Original poster: "Steven Ward by way of
> > Terry
> > > > Fritz
> > > > > > > "
> > > > > > >
> > > > > > > Did YOU make the motor synchronous? Maybe
> > its
> > > > > > > loosing sync or just isnt
> > > > > > > modified correctly (like its running a
> > 3599
> > > > rpm
> > > > > > > rather than 3600 rpm).
> > > > > > > Though thats seems unlikely, i cant figure
> > > > what else
> > > > > > > would c! ause operation
> > > > > > > to swing in and out like that. Are you
> > using
> > > > safety
> > > > > > > gaps? I hope so! Im
> > > > > > > also guessing you have tried to play with
> > the
> > > > > > > phasing? But then again,
> > > > > > > that should not make operation seem so
> > > > strange.
> > > > > > >
> > > > > > > Steve Ward
> > > > > > >
> > > > > > >
> > > > > > > >From: "Tesla list"
> > > > > > > >To: tesla-at-pupman-dot-com
> > > > > > > >Subject: Problems with SRSG on TC
> > > > > > > >Date: Mon, 30 Jun 2003 20:10:26 -0600
> > > > > > > >
> > > > > > > >Original poster: "Zagarus Rashkae by way
> > of
> > > > Terry
> > > > > > > Fritz
> > > > > > > >"
> > > > > > >
> > > > > > > >
> > > > > > > >Hi all,
> > > > > > > >
> > > > > > > >I recently completed an SRSG that runs at
> > > > 3600 RPM
> > > > > > > >with a 1/4 inch by 7.5 inch dia Lexan
> > disk,
> > > > with 4
> > > > > > > >stainless steel electrodes for 240BPS. I
> > use
> > > > a MOT
> > > > > >! > >stack running at about 2kVA and a 38nF
> > cap.
> > > > > > > Secondary
> > > > > > > >is 1000 turns or so of 22AWG on 4 inch
> > SCH 40
> > > > PVC.
> > > > > > > >Toroid is 4 by 16. I don't know what is
> > wrong
> >
>=== message truncated ===
>
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