Re: Motor Speed Control (fwd)

["Tesla list" <tesla@xxxxxxxxxx>]

---------- Forwarded message ----------
Date: Sun, 09 Sep 2007 21:35:47 -0400
From: Scott Bogard <teslas-intern@xxxxxxxxxxx>
To: tesla@xxxxxxxxxx
Subject: Re: Motor Speed Control (fwd)

Chris, guys.
     Yes a dimmer will regulate a motors speed, no, do not use it for an 
ASRG.  Ok, you may well get away with one on a NST coil (I did, until my 
tungsten rod exploded due to shoddy construction), but as your power level 
increases, so will the problems with a dimmer.  They get interference from 
the tank circuit, and are a pain to filter and shield.  On my MOT coil, the 
motor would stop spinning when the power was turned on, some have reported 
the opposite, having the motor only run full blast when turned on, and I'm 
sure they will put in their two cents.  Use a variac, there is a 10 Amp unit 
for $10 on there right now, but by the time you read this it will probably 
be gone (17 hours left), you could try building one if you were really 
patient, but it is probably not worth the effort (mine melted occasionally, 
but it did work).  You could also use a seriously chunky potentiometer, or a 
resister switch array.  Good luck, and let us know how it goes.
Scott Bogard.


>From: "Tesla list" <tesla@xxxxxxxxxx>
>To: tesla@xxxxxxxxxx
>Subject: Re: Motor Speed Control (fwd)
>Date: Sun, 9 Sep 2007 11:48:05 -0600 (MDT)
>
>
>---------- Forwarded message ----------
>Date: Sun, 9 Sep 2007 13:52:21 -0400
>From: Slurp812 <slurp812@xxxxxxxxx>
>To: Tesla list <tesla@xxxxxxxxxx>
>Subject: Re: Motor Speed Control (fwd)
>
>Yup, I can verify it works on a drill, at least my drill anyways...
>
>
>
>On 9/9/07, Tesla list <tesla@xxxxxxxxxx> wrote:
> >
> > ---------- Forwarded message ----------
> > Date: Sun, 9 Sep 2007 10:28:50 -0700 (PDT)
> > From: G Hunter <dogbrain_39560@xxxxxxxxx>
> > To: Tesla list <tesla@xxxxxxxxxx>
> > Subject: Re: Motor Speed Control (fwd)
> >
> > A cheap, 600W lamp dimmer always worked well for me.
> > I've found that a TRIAC-type lamps dimmer can regulate
> > any universal-type motor, be it angle grinder, router,
> > drill, etc.  Doesn't work at all for any type of AC
> > induction motor, however.
> >
> > Greg
> >
> > --- Tesla list <tesla@xxxxxxxxxx> wrote:
> >
> > >
> > > ---------- Forwarded message ----------
> > > Date: Sun, 09 Sep 2007 01:29:55 -0500
> > > From: Crispy <crispy@xxxxxxxxxxx>
> > > To: tesla@xxxxxxxxxx
> > > Subject: Motor Speed Control
> > >
> > > Hello,
> > >
> > > I'm working on my ARSG, and I'm wondering what kinds
> > > of things will work
> > > as speed control for a motor.  I decided that I'm
> > > going to go with an
> > > angle grinder motor, if that makes any difference.
> > > A variable
> > > transformer would be best, but they all seem to be
> > > expensive.  The
> > > cheapest 5amp variac I can find is on ebay for $50.
> > > I've heard mixed
> > > opinions about using lamp dimmers as speed controls,
> > > and I'm wondering
> > > if there's any kind of consensus here about that.
> > > Would it be better to
> > > use something like
> > > http://home.cogeco.ca/~rpaisley4/x1200WControl.html
> > > instead of a lamp dimmer?  Or do I really need a
> > > variac?  If so, does
> > > anyone know of a cheap source for variacs?
> > >
> > > Thanks,
> > > Chris
> > >
> > >
> > >
> > >
> > >
> >
> >
> >
> >
> > >
> >
>
>
>

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