[TowerTalk] Tram question.

[Gerald Smith]

Greg,

One method I read about is to secure the ground end of the tram line
with a come-a-long. Secure the top end of the tram to the mast, above
the beam attach point. After raising the beam to the top of the tram,
have the ground crew reduce tension on the tram using the come-a-long.
The effect will be to allow the beam to be swung in to the mast.

Maybe our own tower tech, "Prime Directive" K7LXC, will have a comment
on this methodology.

Gerry, W6TER

Greg Fox wrote:
> 
> I'm raising a C31XR to the top of 100' of 25G. It's resting place
> will be about six inches above the flat top section. I'll be using
> 3/16 EHS wire rope for the tram line, and a pully at the top of
> the tower and down at 30' for the haul line.
> 
> The antenna hangs underneath the tram line, which leaves me in a
> dilema. Would it be possible to tram the C31XR up to 100' than
> remove the tram line and attempt to lift or hoist the antenna
> into place a foot or two above where the tram line left it? Or,
> would it be ok to affix the tram to the 2" 6061T6 alluminum tubing?
> 
> My insides tell me not to do the latter, and I'm sure you guys
> probably will too. I've thought about making some sort of steel
> raiser that would clamp to the 25G and give it extra height, but
> that seems falible also.
> 
> I'd really like to tram it right into place so I don't have to
> man handle 90lbs of spread weight 100' in the air. However, I
> guess it might be alright if I tie it in such a way so that it
> can't pitch or roll, but rather, just slide straight up.
> 
> 73s, de Greg / KE9R
> 
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