Hi Dick, looks like you have had lots of very good suggestions. I too would
very strongly advise against trying to use any passenger vehicle for your
application. I have three 70' universal towers with various HF and VHF
antennas and once, a long time ago, let a friend talk me into trying to use
my full sized Chevy 4x4 on hard packed gravel to slowly pull it up...I knew
better and did not want to try it but in the end I gave in. What a joke and
a disaster ! Do not go there.
Anyway, while it is not as elegant as the falling derrick method, here is
what I use on my 3 towers. Just a couple pressure treated 6"x6"x18' timbers
bolted together and sunk into 5'-6' concrete at a slight angle. Heavy chain
in the back also into concrete to supply extra support. Two pulleys and a
geared winch allows me to raise and lower each in a matter of minutes. Have
been using these particular three for 16 years and the same technique but at
a different QTH for over 30 years. About the only thing I would do
different would be to purchase slightly longer timber to raise the pull
point a tad. Or just get a nice 20' I-beam and sink that in cement. Not
the answer for everyone but it works for me and keeps me off the tower
(which is a very good thing) hi-hi.
Here are a couple shots:
http://gedas.cc/v/Misc/HAM-1/09030167_G.jpg.html
http://gedas.cc/v/Misc/HAM-1/02190008_G.jpg.html
http://gedas.cc/v/Misc/HAM-1/02190009_G.jpg.html
73 Gedas, W8BYA
Gallery at http://gedas.cc
Light travels faster than sound..
This is why some people appear bright until you hear them speak.
----- Original Message -----
From: <RLVZ@aol.com>
To: <towertalk@contesting.com>
Sent: Wednesday, February 01, 2012 8:10 PM
Subject: [TowerTalk] Question about lowering a Fold-Over tower
> Hi Guys,
>
> I'm going to lower a 90' Heights aluminum fold over tower with my car
> tomorrow evening. I've done this before without destroying the tower so
> hopefully I can have another successful lowering!
>
> My question is what is the best height on the tower to attach my Nylon
> Strap for lowering the tower?
>
> A few thoughts:
>
> 1) The 90' tower folds over at ground level and has a 36" wide base.
>
> 2) In the past, I attached my nylon strap around the tower at aprx. the
> 35' level and then attach a 1/4" steel cable to the nylon strap and raise
> and
> lower the tower with my car.
>
> 3) I keep the top of the tower 13' off of the ground so there's room to
> attach my 24' boom Yagi to the top of the tower. Keeping the top of the
> tower 13' off of the ground makes it easier to lower and raise the tower
> with a
> vehicle than if the top of tower was on or near the ground. That said,
> with the top of the tower 13' off of the ground it's still quite touchy
> raising and lower the tower as only as a small movement in the vehicle
> makes a
> big change in the tower.
>
> So I'm looking for the best strap height to lower the tower and the best
> strap height for raising the tower. After using the 35' height before...
> I
> don't think that one height is the ideal height for raising and lowering
> the tower. Since it's easy to locate the nylon strap anywhere on the
> tower
> I'm looking for the best height for lowering and best height for raising.
>
> All thoughts appreciated!
>
> Thanks-
>
> Dick- K9OM
> _______________________________________________
>
>
>
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