The HDR 200 and 300 rotators use spur gears and a wedge brake making
them a poor example. They are basically a Ham M on steroids. I tore up
teo of them in less than 2 weeks
They develop torque only when the motor is running. I will never
purchase another one of those,
OTOH the double worm gear rotators list both rotating and holding torque
Big difference!
73
Roger (K8RI)
On 5/4/2016 Wednesday 9:55 PM, john@kk9a.com wrote:
Torque has nothing to do with ability to hold an antenna in the wind or how
well a rotator will hold up. The Hy-Gain HDR-300's that I owned had plenty
of torque, but each of them required service approximately once a year. All
of the damage to them occurred while they were not being used. Amazingly
the small windshield wiper motor with plastic gears that TIC General puts in
their ring rotator turns my 250 pound H.B. interlaced 20/40m beam and other
smaller monobanders with few issues.
John KK9A
To: towertalk@contesting.com
Subject: Re: [TowerTalk] Rotator Choice for Larger Yagi
From: "Roger (K8RI) on TT" <K8RI-on-TowerTalk@tm.net>
Date: Wed, 4 May 2016 19:27:59 -0400
Torque means a lot. It's the ultimate measure of turning power and the
ability to hold an antenna in the wind.
_______________________________________________
_______________________________________________
TowerTalk mailing list
TowerTalk@contesting.com
http://lists.contesting.com/mailman/listinfo/towertalk
--
73
Roger (K8RI)
---
This email has been checked for viruses by Avast antivirus software.
https://www.avast.com/antivirus
_______________________________________________
_______________________________________________
TowerTalk mailing list
TowerTalk@contesting.com
http://lists.contesting.com/mailman/listinfo/towertalk
|