Re: mot rewind

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

Original poster: "David Speck by way of Terry Fritz <twftesla-at-qwest-dot-net>" <dspeck-at-relex-dot-com>

Steve,
I understand your concern.  However, since Frank mentioned that he had
already unwound the primary, I
figured that he would be able to rewind it with the two halves properly
phased.  Actually, the easiest
way would be to fold the wire in half and wind it as a bifilar winding,
thus guaranteeing proper
phasing.  To locate the precise center in an intact winding, and break into
it would be nearly
impossible, hence I didn't belabor the point.

Dave

Tesla list wrote:

> Original poster: "S & J Young by way of Terry Fritz <twftesla-at-qwest-dot-net>"
<youngs-at-konnections-dot-net>
>
> Dave,
>
> If you think about your advice to Frank RE the primary tap, you will realize
> that you need to cut the winding into two windings.  If you just tap it and
> connect the outer windings together, they will be phased wrong and will blow
> a breaker.
>
> Frank,
>
> You mentioned primary windings (plural).  Perhaps your transformer has two
> primary windings and can run on either 120 or 240 volts?  If only 240, you
> could consider bringing out a 240 volt outlet from your break box, similar
> to a stove or dryer outlet.
> --Steve
> ----- Original Message -----
> From: "Tesla list" <tesla-at-pupman-dot-com>
> To: <tesla-at-pupman-dot-com>
> Sent: Sunday, January 06, 2002 12:15 PM
> Subject: Re: mot rewind
>
> > Original poster: "David Speck by way of Terry Fritz <twftesla-at-qwest-dot-net>"
> <dspeck-at-relex-dot-com>
> >
> > Frank,
> > Just use the original primary winding wire, but connect a tap in the
> > center, and run it as
> > two 110V windings in parallel.  22 ga wire might be a bit fine for the
> > power level you
> > want.
> >
> >  To be honest, MOT's are so easy to come by that it isn't worth it to try
> > rebuilding one --
> > just check curbside on trash day.  A few blocks travel should net you a
> > fine dead MWO, and
> > the bigger the better.  Appliance repair shops would probably give you one
> > for free, or a
> > Salvation army / Rescue mission type place would have one for a few bucks.
> >
> > HTH,
> > Dave
> >
> > Tesla list wrote:
> >
> > > Original poster: "by way of Terry Fritz <twftesla-at-qwest-dot-net>"
> > <PsychoticMinds1-at-aol-dot-com>
> > >
> > >        Hi all
> > >
> > >                    I have just been given a 240 mot by a teacher at my
> > school.
> > > I ran it 110 but it wasnt enough for me :-)  so i cut the core and
> > removed the
> > > primary windings i have a bobin ready to make a new primary out of 22
> awg
> > > magnet wire how many turns would i need?  is 22 awg thick enough wire?
> How
> > > many amps can a 22 awg wire withstand?