[AT] Old shop lathe motor-- motor questions for you "experts"

[Mark Greer]

The motor is single phase but it is not a 2 speed. It will run 1450 rpm on
50 cycle power as found elsewhere in the world and 1760 rpm on 60 cycle
power like we have here in the US. There are 2 speed motors such as the
5hp/10hp on my Warner & Swasey No. 3 which will run 860 rpm at 5hp and 1720
rpm at 10hp but they are usually 3 phase.
Mark

----- Original Message ----- 
From: "Cecil Bearden" <crbearden at copper.net>
To: "Antique tractor email discussion group" <at at lists.antique-tractor.com>
Sent: Wednesday, January 18, 2006 7:30 PM
Subject: Re: [AT] Old shop lathe motor-- motor questions for you "experts"


> That motor is single phase, and 2 speed.  It has extra windings, that is
why
> it is so heavy.  You do not want to part with that motor because it will
> give you twice as many speeds on your headstock as a single speed one
will.
> You can better match your speed when cutting. Really good when youa re
> facing a large piece and need to slow down the speed on the outer cut to
> keep down chatter.  I have a 3 hp one in my Colchester lathe.  It burned
out
> about 2 weeks after I got the lathe, and it cost over $300 to have it
> rewound since it is 2 speed.  However, it needs the 2 speed due to the way
> the lathe is set up....
>
> If  the tag states it will run on 115volt it is NOT a 3 phase unless it is
> an oddball military surplus unit.... 2 get 115 3 phase you have to
> transformer down to 115 with a 3 phase transformer.  3 phase is 230/460
> USUALLY..  there are other configurations....
>
> Cecil in OKla
>
>
> ----- Original Message ----- 
> From: "John Wilkens" <jwilkens at eoni.com>
> To: <at at lists.antique-tractor.com>
> Sent: Wednesday, January 18, 2006 2:31 PM
> Subject: [AT] Old shop lathe motor-- motor questions for you "experts"
>
>
> >
> > I have a neat old motor out of an older 13" South Bend lathe that I
bought
> > for parts.  I'm wondering about the electric motor in it...what's it
good
> > for? ...whay is it so big for the rated 1 HP?  Etc.   The motor must
weigh
> > close to 100 lbs.  The info on the motor tag is:  "General Electric
> > Reversible Repulsion Induction motor.  224 frame, SCA type.  50/60
cycles,
> > 1450/1760 RPM at full load.   115 Volt (16/12.4 amps)/230 Volt (8/6.2
> > amps).  Enclosure code F.  1 H.P."     It's a neat motor because it
> > reverses with the switch off the lathe.  How come it's more than twice
as
> > big as a "modern" 1 HP motor?   Any comments welcome.  I'm just
> > interested.     John W.
> >
> >                    In the wide-open spaces of NE Oregon
> >
> >
> > _______________________________________________
> > AT mailing list
> > Remembering Our Friend Cecil Monson 11-4-2005
> > http://www.antique-tractor.com/mailman/listinfo/at
>
> _______________________________________________
> AT mailing list
> Remembering Our Friend Cecil Monson 11-4-2005
> http://www.antique-tractor.com/mailman/listinfo/at
>
>
>
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