[TowerTalk] Boom to Mast

[Roger (K8RI)]

Expanding on the previous post I made.
The boom to mast clamp is at its most basic as a flat plate with U-bolts 
(2 to fit the mast and 2 to fit the boom). 
Don't use dead soft Aluminum, but rather some of the harder alloys the 
size of which is determined by the size of the mast and boom.. To 
greatly improve the holding ability while reducing the stress on the 
boom, use "saddle clamps" which present a curved surface that will fit 
snugly to about 1/4 the circumference of the boom and mast.  They are 
not cheap, but OTOH they are a good investment that helps prevent 
slippage on the mast and particularly with smaller booms give a much 
better grip than plain u-bolts without approaching the crush pressure 
that would damage the boom.

73

Roger (K8RI)

Roger (K8RI) wrote:
> If you don't have access to some aluminum stock (they are easy to make), 
> try DX Engineering.
>
> 73 and good luck,
>
> Roger (K8RI)
>
> Scott Weiss wrote:
>   
>> I just recently purchased a 40-2CD 40 meter antenna. I would like to replace the mast to boom mounting plate. The O.D. of the boom is 2 1/8 inches. Any suggestions?
>>                   73's 
>>                   Scott N2WF
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