Re: calculating bps for sync rsg

• To: tesla-at-pupman-dot-com
• Subject: Re: calculating bps for sync rsg
• From: "Mark Broker" <broker-at-uwplatt.edu> (by way of Terry Fritz <twftesla-at-uswest-dot-net>)
• Date: Fri, 03 Mar 2000 10:48:26 -0700
• Approved: twftesla-at-uswest-dot-net
• Delivered-To: fixup-tesla-at-pupman-dot-com-at-fixme

Jon,

Your motor isn't a synchronous motor.  You have to modify the armature of the
motor by grinding 4 flats into it.  Use a mill if one is available.... took
me 20
mionutes, including cleanup and mending my pinched finger :-(    This
modification
will turn the 1725 into a 1800, if you live in a 60Hz area.

The formula is then:  RPM/60 * #contacts == 1800/60 * 4 == 120.  You'll have a
120BPS gap.

For information on how to calculate the flat lengths, check out:
http://www.peakpeak-dot-com/~terryf/tesla/misc/syncmot.zip

(Thanks Terry!)

Mark



Tesla List wrote:

> Original Poster: "Jon Lagler" <rockcrawl-at-netzero-dot-net>
>
> Hello,
>  This may be a dumb question, but please bear with me, I'm kinda new at this.
> How do I calculate the break rate of my synchronous rotary gap? My rotor
has 4
> contacts. it is a 1/2 hp motor, 1725 rpm(I think), 60hz. Whatever it is, it
> seems to work well.
>
>
> Thanks in advance,
>  Jon

• Prev: RE: calculating bps for sync rsg
• Next: Re: hv connections
• Index(es):
  • Main
  • Thread