>
>Hi Everyone,
>
>I got a question for you. Do you think a 4130 Cromolly Mast 20' x 2" x
.375" would hold a KLM 2 EL. 40 meter beam (45lbs - 6 ft2 - 16' boom) 15
feet above the tower? I will be using a thrust bearing. Let me know what you
think!
>
>Thanks and 73,
>John - WM9U
>
>
Hi John,
Why don't you calculate the stresses on the mast with that load on it and
get the answer that way? I think it is a marginal situation, but that is
just a guess. I would calulate it before putting it up. Lowering the beam
by 5 feet on the mast would improve the situation a lot if the calculations
indicate it won't work at 15 feet. The formulas for doing this were
published in the NCJ two different times in the past. I can't remember
which issues . . .
Stan w7ni@teleport.com
--
FAQ on WWW: http://www.contesting.com/towertalkfaq.html
Submissions: towertalk@contesting.com
Administrative requests: towertalk-REQUEST@contesting.com
Problems: K7LXC@contesting.com
Sponsored by Akorn Access, Inc & N4VJ / K4AAA
|