Re: Eastern Air Devices Sync Motors

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

Original poster: "Crow Leader" <tesla-at-lists.symmetric-dot-net> 

Hello,

It's good to the motor has a wonderful new home.

I found a small square cooling fan kept the temp down too. The internal
"fan" seemed pretty worthless

KEN

----- Original Message -----
From: "Tesla list" <tesla-at-pupman-dot-com>
To: <tesla-at-pupman-dot-com>
Sent: Sunday, April 25, 2004 1:30 PM
Subject: Eastern Air Devices Sync Motors


 > Original poster: "Harold Weiss" <hweiss-at-new.rr-dot-com>
 >
 > Hi All,
 >
 > For those that have the 1/20 HP Eastern Air Devices hysterisis sync
 > motors.  I have noticed with mine that they run hot.  I have a
 > solution!  Wicks Aircraft Supply has a engine oil filter heatsink.  This
 > heatsink has a 3 5/8" bore and two lengths available, 3 5/8" and 4
 > 5/8".  From the website it also comes with a couple of hose clamps to
 > secure it.  Part numbers are CC109 for the 4 5/8" length and CC110 for the
 > 3 5/8" length.  Price is $32.99 for each model.  With a little heatsink
 > grease these should keep those motors running cooler.
 >
 > Also, these motors do work with the J.F. phase controller.  With the
motors
 > 4uF run cap, 7.5A Powerstat 116, and 40uf cap, I can get about 45 degrees
 > of shift before the votlage drops the motor out of sync at around
 > 50-60V.  I am looking at increasing the cap size, as the peak seems to be
 > at the start of the windings for the variac.  They are a bit of a pain as
 > they don't always come up right, but seem ok once they get dialed in.
They
 > also seem not to sync right away with the phase controller.  It takes
about
 > a second or two to run up and lock.
 >
 > David E Weiss
 >
 >
 >