Re: [TowerTalk] rotary tower : cable management solution at base

[Dave Sublette <k4to@arrl.net>]

Please post your photos and ideas received on a website.  I have had a 200 foot 
rotating tower for 28 years and never felt that my cable loops were “as sexy” 
as the the tower.  I am now putting it back up with the motor at 5 feet from 
the ground and will have the same problem as you.  I limited my rotation to 360 
just because I didn’t want to fight the loop.  But 450 would be much more 
useful.

Good luck and keep us informed, please.

73,

Dave, K4TO

> On Jul 28, 2017, at 7:00 AM, Richard Riley <Richard.Riley@tango.hr> wrote:
> 
> Hi all,
> 
> I'm about to install the first of 5 rotary towers here @ 9A1TT. This is the 
> smallest at 31m but they all based on triangular 6m segments measuring 50 or 
> 60cm to a side.
> Concrete will be poured for the base and guy points on Monday...so I'm quite 
> excited, having waited 4 years for the paperwork to be cleared :)!
> 
> Now to my question.
> 
> The tower sits on a typical base (with 3 phase motor) that measures 1m in 
> height.  The system looks very similar to those on offer at XG and RTS.
> What I haven't seen anywhere (at least not documented online) is a 
> mechanically sound yet elegant solution to handle the coiling of coax and 
> control cables as the tower rotates through its 450o.
> 
> The tower will carry 4 mono-banders, an electronic compass for rotation 
> controller and a safety light on top...perhaps later another yagi for 6m..or 
> alike.
> I'm opting for 10-15mm flexible coax to run the length of the tower and into 
> the concrete.
> So I have a "cable loom" (or 2, if I separate coax from cables) which is no 
> larger than 50mm outer diameter.
> 
> I considered using a cable drag chain to support the spiral and protect the 
> coax etc... but haven't ever seen one used for this application.
> Or am I complicating matters (wanting the loom to look as sexy as the tower 
> :))...and will a flexible UV-resistant conduit suffice?
> 
> What do you use?  Pictures to my email much appreciated :).
> 
> rgds
> 
> 73 9a1tt
> 
> Richard Riley
> 
> 
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