Re: Problems with SRSG on TC

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

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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