My stock Orion clamp has been holding for 8 years now. With a TH7 and a
402CD and a 100+ pound chrome molly mast.
And we get high winds here too.
From: "Dick Green WC1M" <firstname.lastname@example.org>
Sent: Friday, March 04, 2011 1:11 PM
To: "'Dick Hanson'" <email@example.com>; <firstname.lastname@example.org>
Subject: Re: [TowerTalk] champion radio replacement clamp for orion 2800
> I'm using the Champion replacement clamp on my Orion rotor, which turns a
> sq ft antenna. It's working as advertised: the mast hasn't rotated in the
> clamp at all since I installed it.
> When using the stock clamp, the beam used to rotate up to 60 degrees in
> winds (around here that means 40+ MPH). Since installing the Champion
> the beam hasn't budged. Well, actually that's not true. Early this winter,
> heavy wind caused the antenna to rotate on the mast at the boom-to-mast
> clamp. It appears that eliminating the rotation in the rotor clamp
> the boom-to-mast clamp as the weak link. Since tightening those bolts as
> hard as I could, the beam hasn't budged. I may need to use some loctite on
> those u-bolts. Of course, none of this would apply to a base-rotated
> I love the look of the N7NV clamp, and I'm sure it works very well, but it
> was significantly more expensive and would have required me to jack up the
> mast/antenna quite a bit more to install. The Champion clamp can be
> in with minimal clearance between the mast and rotor. I was also concerned
> about the tolerance of the N7NV clamp if my mast happened to be slightly
> larger than 2".
> 73, Dick WC1M
> -----Original Message-----
> From: Dick Hanson [mailto:email@example.com]
> Sent: Thursday, March 03, 2011 5:19 PM
> To: firstname.lastname@example.org
> Subject: [TowerTalk] champion radio replacement clamp for orion 2800
> I am presently using four of the 2800s, ground-mounted to turn rotating
> I'm having some problems getting the orion clamps to stay 'tight' on the
> sprocket shafts (2" solid steel shafts).
> I would appreciate hearing from anyone who has actually made the change
> orion to champion shafts.
> Don't need theories....need real, live experiences.
> Thank you.
> Dick, K5AND
> Austin, TX
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