[Lowfer] Tower Align Fixed
Jay Rusgrove
[email protected]
Mon, 28 Jul 2003 20:03:49 -0400
Peter
Glad to hear you got the tower squared away. Once you can tweak the sections
enough and get them started they usually go the rest of the way without too
much of an argument.
The story about your tower guy is pretty amazing. The only person I've ever
seen do that is Fred Lass, K2TR, and he pretty tall - a human gin pole.
I' m 5' 7-1/2" and weigh about 127 lbs so I need all the tools (leverage) I
can get. Fly weight only helps when multiple trips up the tower are
required, though.
Jay
> Hi Jay,
>
> Was off last week and away from the list and the Web.
>
> Good advice on the tower and I tried it except for the jacks. What I
> last tried worked. The setup was on a fold-over tower and the top
> section was folded down yet up about 20 feet. To this, the top section
> was to be attached (Rohn 25). First I made a template of the triangle
> pattern of the top section (they're the full tubes). I carefully cut out
> the hole pattern and brought this up to the top tower piece. This showed
> one leg about 1/8 inch out. I braced the tower with a 20 foot 4x4 to
> ground and used a pipe to pull the leg in. It was stiff, though. I think
> it moved some. Next, with a neighbor, raised the top section for
> fitting, still out. Bring the top sec down and using a heavy file I
> removed the outer lip only of the suspended out leg. It worked and
> allowed the legs to start fitting and as force was applied in-line with
> the legs. That process took about three days of trial an error and head
> scratching. Now erected.
>
> The newer tower is also up. It's 40 feet of mostly Rohn 20. I was able
> to get the first two sections on the base and had an antenna guy do the
> last two. This guy works w/o belt or gin pole. He grips a section
> mid-point and hauls it up. At the top he's waist high w/ one leg around
> as his grip. With two arms he raises it, grips it at its base and sets
> it down with a little wiggle to set the legs. Amazing to watch.
>
> This guy is tall and sort of thin. I asked where he got that upper body
> strength (he wasn't "muscle bound"). He said he was a gymnast in HS. His
> push-ups record was 250! (I could do 45 ten years ago). He currently can
> walk 100 feet on his hands. But he doesn't look all that different.
>
> Peter
>
> >>> [email protected] 07/17/03 08:27PM >>>
> Peter
>
> For what it's worth...have had good luck using a piece mast material
> (1.5
> inch galvanized water pipe) as a lever to fix moderate alignment
> problems -
> much easier if you have two people up there. If the fit is way off you
> might
> have to slightly bend a crossbrace, mate the two sections, and then
> straighten the crossbrace. If done carefully with a plastic deadblow
> hammer
> the galvanize should remain intact.
>
> Another tool that occasionally comes in handy up high is a small
> scissors or
> bottle jack. At least Rohn 25 moves a lot easier than 45 and up.
>
> Jay
>
> _______________________________________________
> >From the Lowfer mailing list
> Send messages to: [email protected]
> To sub/unsub visit: http://mailman.qth.net/mailman/listinfo/lowfer