[TowerTalk] Strongest mast material?

[K7LXC@aol.com]

In a message dated 04/18/2000 10:21:57 PM Pacific Daylight Time, 
wy6k@yahoo.com writes:

> So which mast is stronger:  Chromally or High Carbon
>  Steel?  What is the general consensus on the strongest
>  mast.  Double wall, triple wall?  

       I guess my questions are what are you going to put up there and why do 
you need such a brute mast? Santa Clara county is only a 70 MPH windspeed 
zone so no big deal wind-wise. An SAE 1027 DOM has about 65kpsi yield 
strength which isn't too expensive and will probably hold just about anything 
you care to put up short of a full-sized 40M beam.
>  
>  I need 22 feet, 20 feet of which will be above the tower.

      Ouch - that's a HUGE lever arm from that much mast sticking out and 
that little mast in the tower. What kind of rotator are you going to use to 
hold it?

      I have a mast calculator program available from Champion Radio Products 
- the Mast, Antenna and Rotator Calculator (MARC Program). You can use it to 
play different mast scenarios. 

Cheers,   Steve   K7LXC
Champion Radio Products
http://www.championradio.com
Tower Tech

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