I'd suggest that for real grip you do not need lots of contact area, instead
you need "teeth" on the saddle.
Something like this ...............
http://www.aerial-parts.co.uk/shop/article_150/V-Bolt.html?shop_param=cid%3D
33%26aid%3D150%26
Sorry, I think the link has split.
John G4ZTR
-----Original Message-----
From: towertalk-bounces@contesting.com
[mailto:towertalk-bounces@contesting.com] On Behalf Of Grant Saviers
Sent: 06 February 2012 14:51
To: Charles Lind
Cc: towertalk@contesting.com
Subject: Re: [TowerTalk] XM240 Mast Clamp
Try the DX Engineering Saddle Clamps as they have a lot of contact area
with the mast with the cast aluminum saddle. The 2" size comes in two
bolt diameters, obviously the 3/8" u-bolt can handle more tightening torque.
http://www.dxengineering.com/Products.asp?ID=14&SecID=1&DeptID=33
We used three for boom plate to mast clamping of two 40m Moxons, so far
so good w/o any pinning.
Grant KZ1W
On 2/6/2012 6:37 AM, Charles Lind wrote:
> I have a Cushcraft XM240 at 90 feet which, despite double lock nutting and
> Locktight, rotates on its own several degrees in high winds. The first
> time it did this the beam descended about a foot on the mast. Cushcraft
> has no advice. Does anyone know of a boom to mast clamp assembly that is
> more secure than the original??? Tnx for any advice.
> 73, Chuck, N8CL
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