wstrahl@nwsca.nw.lucent.com wrote:
>
> Some folks climb crankups .. I'm on the side of those who lay an
>extension ladder against the nested tower and clamp on once I'm at the
>top of the ladder. I'm not quite up to climbing a mast (Tnx K9US and
>N4SI/N9AKE for their help in the past!) I have a US Tower HDX-589 MDPL
>89' crankup and when the five sections are nested I don't see how
>anyone could possibly get a safe foothold on all the nested
>crossbraces...There's barely room to get a hand between the
>bracing..much less a solid spot for a foothold.
> Wayne - W9II wstrahl@nwsca.nw.lucent.com
Hi Wayne; I have a used TX489MDPL that I have just finished recabling
with new cables and pulleys from US Tower. They told me to nest the
tower with about 1 foot per section raised and with a minimum of three
turns of the pull up cable wound on the drum. The old cable was about
four feet longer than the new, and was wound at 5 turns when I removed
it. Following their instructions I could only get three turns on the
drum and the tower would not nest any lower. Of course I have not yet
erected the tower (its on the ground) but I ran it in and out a few feet
and that is where it wants to be. What gives? US tower says they test
these with a 500 lb test load before shipping. How much does a 100 foot
1/4 EHS cable stretch??
--
Joe Leikhim
Jleikhim@nettally.com
"tv dinner by the pool,
i'm so glad i finished school" -F.Zappa 1967
"The Revolution will NOT be televised" -Gil Scott Heron
--
FAQ on WWW: http://www.contesting.com/towertalkfaq.html
Submissions: towertalk@contesting.com
Administrative requests: towertalk-REQUEST@contesting.com
Problems: K7LXC@contesting.com
Sponsored by Akorn Access, Inc & N4VJ / K4AAA
|