Re: Rotor size question

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

Original poster: "Paul Marshall" <klugmann-at-hotmail-dot-com> 


The Diameter of the Rotor is really governored by two things RPM and 
Horsepower. If you have the horsepower you need to know the RPM and 
calculate the Centerfugal forces on the rotor. Failing to do this could 
result in a rotor burst. Definatly not a fun thing.

Paul M


>From: "Tesla list" <tesla-at-pupman-dot-com>
>To: tesla-at-pupman-dot-com
>Subject: Rotor size question
>Date: Wed, 03 Sep 2003 18:44:19 -0600
>
>Original poster: "Robert Hanford" <pomnept-at-comcast-dot-net>
>
>I am wondering if my 1/20 hsp. cap-start motor will handle a 7" x 1/4" 
>phenolic rotor or if I should use a smaller one- say 4 1/2" to 6". It is a 
>synch hysteresis and I've noticed in searching the archives that some have 
>had trouble when the rotor is proportionaly too large. Any help will be 
>greatly appreciated- this thing needs to get built %^ )
>Why is a bigger rotor better? My next coil will be powered by two 
><mailto:15000k-at-60ma>15000k-at-60ma NSTs.
>Thanks,
>Robert Hanford
>