[TowerTalk] Side mount on Trylon Tower

[Guy Olinger, K2AV]

Need to remember that the Trylon corners are not exactly vertical (go in inch and a half each section). Also the vertical pieces are 120 degree rounded corner channel material, not tubes as on Rohn 25, etc.

Using U-bolts on them will deform the vertical channel shape, and create a weak point in the vertical piece. Not good given the high compression forces that can occur in the wind. The vertical has a widened "U" shape which gets its strength from the same concepts that make an I beam strong.

Whatever is placed on a corner will have to be something specially fabricated with some odd bends to mount flat to the faces of the vertical channel material, and use the existing holes for mounting. 

A clamp would have to be a special designed item that prevents deforming the "U". 

> 
> From: Pete Smith <n4zr at contesting.com>
> Date: 2003/04/21 Mon PM 05:04:03 EDT
> To: <towertalk at contesting.com>
> Subject: Re: Re: [TowerTalk] Side mount on Trylon Tower
> 
> At 03:30 PM 4/21/03 -0400, Guy Olinger, K2AV wrote:
> >This mount is made to mount parabolas and the like. A swinging gate would 
> >not have but a few degrees more than 180 movement about the axis. OK if 
> >that is what you need.
> >
> 
> I think that a W7IN-style swinging gate located at one of the corners would 
> work fine and provide close to 300 degrees of rotation if the horizontal 
> arm is made long enough to reach beyond the tower face.
> 
> 
> 73, Pete N4ZR
> The World HF Contest Station Database was updated 11 April 03.
> Are you current? www.pvrc.org/wcsd/wcsdsearch.htm
> 
> 
> 
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73, Guy
K2AV