RE: Odd Motor Mod...

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

Original poster: "David Dean by way of Terry Fritz <twftesla-at-uswest-dot-net>" <deano-at-corridor-dot-net>

Hi

The method I use is to cut a little at a time, reassembling the motor after
each cut, until I get approx. 80% FLA at rated Voltage with the disk and
electrodes installed. One the six pole motor that ended up giving me flats
that are just shy of the width of the uncut parts. That would be just under
1/4 the diameter. Sounds good to me.

later
deano

> -----Original Message-----
> From: Tesla list [mailto:tesla-at-pupman-dot-com]
> Sent: Wednesday, February 14, 2001 9:07 AM
> To: tesla-at-pupman-dot-com
> Subject: Re: Odd Motor Mod...
>
>
> Original poster: "Mike Novak by way of Terry Fritz
> <twftesla-at-uswest-dot-net>" <acmnovak-at-msn-dot-com>
>
> Should I use 1/4 the diameter of the armature for the width of
> the flats? I
> normally use 1/2 for 3600 RPM and 1/3 for 1800 RPM and it works
> every time.
> All that crap about the dead poles is kinda redundant for motors
> that don't
> have dead poles...
>
> Safe coiling!
>
> -Mike Novak
>
> ----- Original Message -----
> From: Tesla list <tesla-at-pupman-dot-com>
> To: <tesla-at-pupman-dot-com>
> Sent: Tuesday, February 13, 2001 8:49 PM
> Subject: RE: Odd Motor Mod...
>
>
> > Original poster: "David Dean by way of Terry Fritz
> <twftesla-at-uswest-dot-net>"
> <deano-at-corridor-dot-net>
> >
> > hi Mike
> >
> > That would be a six pole motor. Six flats will get you 1200 RPM. Use the
> > high speed wire and cap off (wire nuts are OK) the other speed wires. If
> > 1075 is the highest speed listed, or the only speed listed,
> then that will
> > be the high speed. The other speeds use more inductance
> (windings) on the
> > run winding to lower the current and increase the slippage. The
> high speed
> > is the only one of interest for sync mod use.
> >
> > later
> > deano
> >
> > > -----Original Message-----
> > > From: Tesla list [mailto:tesla-at-pupman-dot-com]
> > > Sent: Tuesday, February 13, 2001 7:24 PM
> > > To: tesla-at-pupman-dot-com
> > > Subject: Odd Motor Mod...
> > >
> > >
> > > Original poster: "Mike Novak by way of Terry Fritz
> > > <twftesla-at-uswest-dot-net>" <acmnovak-at-msn-dot-com>
> > >
> > > Hello All,
> > > I was hoping someone might provide me with some info on modifying this
> odd
> > > motor I aquired. The specs on the nameplate are as follows...
> > >
> > > HP 1/2   HZ 60   PH1   CAP 10.00/370
> > > V 115    RPM 1075/4SPD
> > > A 7.9
> > >
> > > But here's where things get sticky... The 4 speed thing. I want to
> modify
> > > this thing for salient pole operation, but am unsure on the flats. I'm
> not
> > > sure how many/ how big the flats should be. Although the RPM is listed
> as
> > > 1075, it has 3 speeds: "HI, MED, LO". What should I assume the RPM is?
> > > This thing is made by GE and it has some really nice bearings, so
> > > I'm kinda
> > > reluctant to scrap it. The shaft is like 5" long with a flat for a set
> > > screw. I've done 7-9 motor mods so far and this one should be
> > > easy, pending
> > > I can figure out how...
> > > Thanks,
> > >
> > > -Mike Novak
> > >
> > >
> > >
> >
> >
> >
> >
>
>
>