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Re: ARSG Motors (fwd)
---------- Forwarded message ----------
Date: Sun, 26 Aug 2007 17:36:33 +0000
From: david baehr <dfb25@xxxxxxxxxxx>
To: tesla@xxxxxxxxxx
Subject: Re: ARSG Motors (fwd)
as far as belts goes, what type do you use ? . I tested a black vacume
belt with the output of a 15k neon and it would arc/track through the
belt ?
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From: "Tesla list" <tesla@xxxxxxxxxx>
To: tesla@xxxxxxxxxx
Subject: Re: ARSG Motors (fwd)
Date: Sun, 26 Aug 2007 11:25:34 -0600 (MDT)
>
>---------- Forwarded message ----------
>Date: Sun, 26 Aug 2007 12:18:35 -0500
>From: resonance <resonance@xxxxxxxxxxxx>
>To: Tesla list <tesla@xxxxxxxxxx>
>Subject: Re: ARSG Motors (fwd)
>
>
>Sometimes in the past we have used these 10,000 rpm
motors. For cooling,
>they like to be run at full speed. We just used pillow
blocks and a belt
>drive and pulleys to get the reduction down to 3,000 RPM.
>
>
>
>Dr. Resonance
>
>
>Resonance Research Corp.
>www.resonanceresearch.com
>
>
>----- Original Message -----
>From: "Tesla list" <tesla@xxxxxxxxxx>
>To: <tesla@xxxxxxxxxx>
>Sent: Saturday, August 25, 2007 2:59 PM
>Subject: Re: ARSG Motors (fwd)
>
>
> >
> > ---------- Forwarded message ----------
> > Date: Sat, 25 Aug 2007 19:57:44 +0000
> > From: David Rieben <drieben@xxxxxxxxxxx>
> > To: Tesla list <tesla@xxxxxxxxxx>
> > Cc: drieben@xxxxxxxxxxx
> > Subject: Re: ARSG Motors (fwd)
> >
> > Hi Chris,
> >
> > Most asynch rotary gap coilers get excellent results with
300 to 500
> > BPS. With a disc with 8 flying electrodes, 3600 RPMs
would yield
> > 480 BPS. I have seen some ARSGs that are set up with
10,000 RPM
> > universal drive motors but their input voltage is almost
always "toned
> > down" with a variac and most seldom run their RSG at the
full rated
> > 10,000 RPMs. My ARSG on my Green Monster coil only goes
up
> > to 3500 RPMs with a treadmill motor and 8 flying
electrodes and that
> > is plenty fast as I usually get the best results wiht the
speed control
> > variac set around 75 to 80 on the 0 -100 dial. Of course,
with a
> > SRSG, you want a break rate that's a direct multiple of
the 60 hz
> > (50 hz for those coilers across the big pond) of the
mains power supply
> > (usually 120 or 240 BPS for 60 hz , 100 or 200 BPS for 50
hz).
> >
> > If the BPS get's too high, the transformer dosen't have
enough time
> > to fully charge the primary capacitor between each bang
and therefore
> > each bang will fire at a reduced voltage. I'm sure others
can explain the
> > theory better but there's a point where the reduced
capacitor discharge
> > voltage is no longer able to keep extending the ionized
path and from
> > that point on, the sparks will get shorter, not longer,
with additional
> > in-
> > crease in the BPS.
> >
> > Also, the centrifugal and vibrational forces on the
rotary disc will
> > increase
> > as the square of the RPMs, so running relatively high
RPMs (>5000) on any
> > homemade disc, other than a very precision made,
professionally machined
> > one, can be quite dangerous.
> >
> >
> > David Rieben
> >
> > -------------- Original message --------------
> > From: "Tesla list" <tesla@xxxxxxxxxx>
> >
> >>
> >> ---------- Forwarded message ----------
> >> Date: Fri, 24 Aug 2007 10:39:45 -0500
> >> From: Crispy
> >> To: Tesla list
> >> Subject: Re: ARSG Motors (fwd)
> >>
> >> What is "too fast" for an ARSG? Is it just power
consumption, or is
> >> there another issue? I may be wrong, but it seems to be
that the faster
> >> the speed on the ARSG, the more frequent bangs, and the
better old
> >> ionized trails help new sparks extend to new lengths by
being allowed
> >> less time to dissipate.
> >>
> >> Chris
> >>
> >> On Fri, 2007-08-24 at 06:42 -0600, Tesla list wrote:
> >> > ---------- Forwarded message ----------
> >> > Date: Fri, 24 Aug 2007 15:11:19 +0930
> >> > From: The Engine Centre
> >> > To: Tesla list
> >> > Subject: Re: ARSG Motors (fwd)
> >> >
> >> > A washing machine, spin motor or a main motor, most
are universal brush
> >> > motors,they are easy to get and cheap, i have one
which runs 13000 no
> >> > load,
> >> > which is far too fast BUT with a small variac you can
control the speed
> >> > to
> >> > what ever you want.
> >> > Paul,--- Original Message -----
> >> > From: "Tesla list"
> >> > To:
> >> > Sent: Friday, August 24, 2007 12:34 PM
> >> > Subject: ARSG Motors (fwd)
> >> >
> >> >
> >> > >
> >> > > ---------- Forwarded message ----------
> >> > > Date: Thu, 23 Aug 2007 21:51:14 -0500
> >> > > From: Crispy
> >> > > To: tesla@xxxxxxxxxx
> >> > > Subject: ARSG Motors
> >> > >
> >> > > Hello,
> >> > >
> >> > > Can anyone suggest reasonably fast (10000rpm+) and
cheap motors for
> >> > > building a propeller-type ARSG? I found some very
cheap angle
> >> > > grinders
> >> > > ($5 a piece, $15 shipping, 11000rpm) on ebay, but
they use 600W,
> >> > > which
> >> > > is more than I can support. The motor doesn't have
to be that cheap
> >> > > either. The imposed total limit is 800W, and the
power supply will be
> >> > > a
> >> > > 12/30 NST (360W). Thanks a lot.
> >> > >
> >> > > Chris
> >> > >
> >> > >
> >> > >
> >> >
> >> >
> >> >
> >>
> >>
> >>
> >
> >
> >
>
>
>
>
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