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Subject: [TowerTalk] HYGAIN ROTO-BRAKE
From: (Pete Raymond)
Date: Fri, 20 Jun 1997 06:55:53 -0400 (EDT)
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>Date: Thu, 19 Jun 1997 16:57:39 -0700
>To: Pat Barthelow <>
>From: Jim Pruitt <>
>Subject: Re: [TowerTalk] HYGAIN ROTO-BRAKE
>X-Sponsor: W4AN, KM3T, N5KO & AD1C
>The HyGain 400 Roto Brake instruction/Op manaul says:
>Rotating Torque: 4000 inch pounds
>Braking Torque: 5000 inch pounds
>Max Vertical load: 800 pounds
>Max bending moment at top bearing: 150 ft/lbs lateral thrust
>Mast Size: 1.25 to 3 inch outside diamater
>Weight: 28.5 lbs
>Output shaft speed:  1 rpm
>Size: 7.5" W x 9.5" L x 14" H
>Power requirement: 110-120v, 50-60 hz/ 2 amps
>Fuse:  3AG/2.5 amp/ MDL
>Motor: 1/10 hp perm. split capacitor
>Control System:  Fully transistorized self synchronized
>Cable:  5 conductor
>Position accuracy:  + or minus 15 degrees
>Resetability to previous bearing:  + or minus 5 degrees
>Is that what you wanted?
>Good luck with it.
>Jim Pruitt, WA7DUY
>At 09:48 PM 6/18/97 -0700, you wrote:
>>We at N6IJ, have been donated a HY-Gain ROTO BRAKE antenna Rotator.  Very 
>>Beefy, and obviously an old model, it has no Docs.  Anyone out there have 
>>any docs for this monster?  Or any specs as to Antennna Sq Ft. capacity, 
>>or rotating torque, brake torque, etc?  
>>Tnx, DX, 73, de Pat, AA6EG/N6IJ, The contest Station from the Government...
>>FAQ on WWW:     
>>Administrative requests:
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>Interesting, the Hy-Gain Roto Brake that I have still in a box was just a
brake.  It allowed a
large array to be held using a small rotator.  The Roto Brake I have gets
mounted above your rotator.
73 Pete N4KW

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