[TowerTalk] XM240 Mast Clamp

[Grant Saviers]

I think "teeth" are a bad bet to get a good grip on an alloy steel mast 
which will have yield strength from 80 to 125ksi.  The high end of that 
range is nearly "file hard" so it will be very unlikely for a toothed 
clamp to bite into the mast beyond the galvanizing.  Also, even if one 
can find as hard as the mast toothed clamp, hard steel on hard steel has 
a low coefficient of friction.

Grant KZ1W

On 2/6/2012 1:20 PM, K8RI wrote:
> On 2/6/2012 10:04 AM, John Lemay wrote:
>> 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 ...............
> Teeth? Yes, or a rough contact area, but the clamps shown below are not
> what you want to use on a heavy load unless they are far larger than
> they look.
> They cost more, but those large saddle clamps work quite well.
>
> 73
>
> Roger (K8RI)
>
>> 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.
>>
>
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