Re: phasingsrsg

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

Original poster: "Jon Rosenstiel by way of Terry Fritz <twftesla-at-qwest-dot-net>" <jonr-at-pacbell-dot-net>

If you bring the motor speed up slowly with a variac you should be able to
hear the rotor "lock in".  When it's not "locked in" you'll hear the motor
"beating" or "hunting".  Same thing happens but in reverse when you lower
the variac voltage. You'll hear the rotor fall out of sync and start
"hunting".
If you do this under a fluorescent light you should  be able to see when the
rotor locks and unlocks. What you see and what you hear should "jive".

Jon Rosenstiel


----- Original Message -----
From: "Tesla list" <tesla-at-pupman-dot-com>
To: <tesla-at-pupman-dot-com>
Sent: Monday, April 22, 2002 4:12 PM
Subject: phasingsrsg


> Original poster: "colin.heath4 by way of Terry Fritz <twftesla-at-qwest-dot-net>"
<colin.heath4-at-ntlworld-dot-com>
>
> hi
>     im trying to tell if my motor is running in syncronous mode iv
machined the
> armature with two flats so im hoping now it will run at 3000 rpm but i
dont
> know if its syncronous how can i tell without expensive strobe lights and
the
> such
> the motor is out of a cloths dryer the gap runs ok on my 6.25" coil but
not
> sure if its quite right
> many thanks
> colin heath
> the gap can be viewe don my site
> www.geocities-dot-com/colinheath2002/
>
>
>
>