[TowerTalk] Ramp up

[Denis Coolican]

Hi Steve,
I am on my second 24 volt motor.  I have no binding in the mechanism and yet the
draw on the motor is 10 amps  at 22 volts.
The motors I am using are 24 volts General Electric RIC and have a rating of 7.9
amps and have a time rating of 1 minute.   The motor is spec to turn at 8500
rpm. I have two of these motors on two prop pitch assemblies The size of the
motor is 2 1/4 X 4 3/4 in.
The rotator assembly is turning a 5 element 20 meter beam on 46 ft. of boom.  It
is balanced as far as weight is concerned.

I have been up there when it is rotating and note that it does not seem to get
up to speed.

Maybe I am not using the correct motor for the prop pitch but they are the
motors  that came with the two prop pitches that I have.

I would not want to pay $400 US each for two motors that I need.

 I have a source of 90 volt DC motors which are specified as 6000 rpm and have a
rating of 1000 watts. I was planning on using this motor

I am tired of climbing!

Denis Ve6AQ
http://www.telusplanet.net/public/telwest/ve6fi.html

K7LXC@aol.com wrote:

> In a message dated 11/7/00 1:02:57 PM Pacific Standard Time,
> dcoolica@planet.eon.net writes:
>
> > I drive a prop pitch rotator with a 90 volt DC motor.
>
>     Aren't they 28 volt motors? Are you concerned about decrease in
> reliability? Have you encountered any problems? What did it do to the rpm's?
>
> Cheers,   Steve    K7LXC
> Tower Tech




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