Re: mod of sync motor (trying to modify)

To: tesla-at-pupman-dot-com
Subject: Re: mod of sync motor (trying to modify)
From: "Barton B. Anderson" <tesla123-at-pacbell-dot-net> (by way of Terry Fritz <twftesla-at-uswest-dot-net>)
Date: Wed, 29 Mar 2000 06:49:37 -0700
Approved: twftesla-at-uswest-dot-net
Delivered-To: fixup-tesla-at-pupman-dot-com-at-fixme

> Original Poster: "Paul Eugene Kidwell" <tmb-at-ieee-dot-org>
>

Hey Paul, John,
Comment below:

<snip>

> (BTW, what porportion of cut to uncut do you use on a 3450RPM motor?)

When Reinhard replied to me regarding making the cut and uncut areas
proportional (which works out that way but still is not the proper method
as measuring the poles are), he also commented on the 3600 rpm motor.
Basically, if you tried to make the flats equal, you would end up cutting
off half the material. Obviously, this isn't the method to use for a 3600
rpm rotor. You'll need two flats, but I'm guessing the method of
measuring the poles (primary winding) width is still the proper method
for this motors modification.

Bart

> I had a starting cap that came with this motor, and when I powered it
> up, it spun right up and ran very smoothly. I didn't have anything to
> put on the shaft to help in telling if we're locked or not. I'll be
> making the strobe described in Terry's STROBE.ZIP file to help verify
> sync.
>
> Well, more experimenting during lunch tomorrow :)
> Paul