[TowerTalk] Tramming

[Tower (K8RI)]

My preference would be one of the Kevlar based cables which is what I use 
for guy lines.

Although much easier to handle and store, lighter weight, and though they 
are much easier to damage then EHS.  That means the tram needs to have good, 
smooth pulleys, and no sharp edges.  The ends also need to be sealed from 
moisture.  Due to their light weight and strength they have very little 
catenary.  This really shows when you run a tram up one carrying a heavy 
weight as there will be a pronounced dip at the tram the size of which 
depends on the weight and cable tension.

Even taking all that into consideration, I still prefer the Kevlar cables.


Roger Halstead (K8RI, EN73 & ARRL Life Member)
N833R, World's Oldest Debonair (S# CD-2)
www.rogerhalstead.com

> Thanks for all the responses. Looks like EHS is the way to go. I like the 
> idea
> of using Big Grips on the ends so that the terminations are adjustable and 
> so
> the pulley can travel right up to the mast. The only thing I don't like 
> about
> this solution is the difficulty in storage. I'd prefer a more flexible 
> material
> that can be rolled more easily into a smaller roll.
>
> 73,
>
> Jim Idelson K1IR
> email    k1ir at designet.com
> web    http://www.designet.com/k1ir
>
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