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Re: [TowerTalk] OR-2800 - thrust nearings, use em.

To: towertalk@contesting.com
Subject: Re: [TowerTalk] OR-2800 - thrust nearings, use em.
From: K8RI <K8RI-on-TowerTalk@tm.net>
Date: Mon, 04 Mar 2013 12:29:42 -0500
List-post: <towertalk@contesting.com">mailto:towertalk@contesting.com>
On 3/4/2013 10:41 AM, Jim Thomson wrote:
A buddy of mine contacted m2 regarding the topic of placing all the weight onto 
the
bearing inside the OR-2800.  Interesting response  from m2.

Jim   VE7RF


Something that I wonder about, are the people we talk to the people who developed these rotators or "the new guard". Then I wonder if either are engineers.

In the case of the Hy-Gain rotators I'm pretty sure we are talking new people as that design has evolved from the old CDE? line over many years with not all that many mechanical changes.

A design like the Hy-Gain, or ham series which are nothing but a pair of U shaped races. Those need at least a minimal ore load as Steve said. Lift the load on those and you end up with a very shaky mechanical system.

I've never seen the inside of the Orion series so I can't comment on them.

73

Roger (K8RI)
................................................................................................................



Hi,

I have a OR2800PX rotor. I am told that all the weight (mast, antennas)
should be placed on the rotor. I am interested to know the why. And what
could go wrong if all the weight is not put on the rotor.
Thanks.

XXXX

-----Original Message-----

Hello  XXXX,

That's a good question. Who told you that?

The rotator can withstand a lot of weight - it has an 1800 lb (818 kg)
Vertical Load Capacity.

However, as with any mechanical system the more one reduces stresses in the
system, the longer a system will last - generally speaking.


Regards,
Jason Boyer, N6EY
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