Re: [TowerTalk] Aluminum mast

["Bruce Ferratt" <uglyatc@msn.com>]

Dave-
Thanks for the email.
The mast was $66.  It is ASTM 6061-T6511 grade aluminum at 1 1/4" OD, SOLID, 
not hollow. The weight of the aluminum was less than the 6ft steel mast that 
came with the tower.  It will be mounted inside the tower about 4-5ft to the 
rotor plate, with 7-8 feet above the tower peak. Will be using a Rohn TB-3 
thrust bearing.
Sorry, no extra real estate for a bigger beam,... can't beat a free Mosely 
TA-33M Tribander.  Heck, they are $325 used, $400+ new plus shipping!
73
Bruce
K4BOF

> From: "WA3GIN @ Arlington County, VA" <wa3gin@erols.com>
> To: Bruce Ferratt <uglyatc@msn.com>
> Subject: Re: [TowerTalk] Aluminum mast
> Date: Wed, 15 Mar 2006 09:35:51 -0500
>
>
>
>
>
>
>
>
> Hey Bruce,
>
>
>
> You should sell the solid mast material and with the profit go buy a 2"
> .25" wall thickness mast and a bigger yagi.? That solid material cost a
> fortune.
>
>
>
> 73,
>
> dave
>
> wa3gin
>
>
>
> Bruce Ferratt wrote:
>
>
> Hello and thanks for letting me post a question.
> How strong is a solid aluminum mast compared with a walled/hollow mast?
> I secured a solid, round 12' aluminum mast 6061-T6511 grade.  What is the 
> likelihood of bending when loaded with a TM-33A and VHF 2m/440 vertical at 
> a rated 70mph wind load in Northern Virginia?  8ft of mast will be exposed 
> above the point of the tower peak (Rohn 25G), with about 4 ft inside the 
> tower to rotor plate.
> Thanks
> Bruce
> K4BOF
> _______________________________________________
>
>
>
> _______________________________________________
> TowerTalk mailing list
> TowerTalk@contesting.com
> http://lists.contesting.com/mailman/listinfo/towertalk


_______________________________________________



_______________________________________________
TowerTalk mailing list
TowerTalk@contesting.com
http://lists.contesting.com/mailman/listinfo/towertalk