[HCARC] Fwd: Crank Over Rohn Tower

[Gary and Arlene Johnson]

Don,

I don't plan on using a setup anything like his 70 foot tower with a mast on 
top.  I was thinking of just using it at about the 40 foot height or maybe 
with a short mast on top of that, but nothing like 70-90 feet.  I have the 
other crank up tower that I pick up tomorrow that will get me up 72 feet 
before putting on a mast and antenna.  I was just wondering if anyone had 
ever heard of hinging a taller tower that didn't crank up at the base.  I 
never wou,ld have even though of trying to drop a 40 foot tower to the 
ground.  As a second tower that could be 40-50 feet up it might be a great 
second tower to run dipoles to.

Everyone always keep telling me - get them up high - I don't have any trees 
taller than about 35 feet, but a second mast might do the trick.

The antenna tower I am picking up tomorrow has all of it's guy wires still 
attached.  They are twisted wire cable.  Is it better to continue to use 
these or change them out for Dacron or other synthetic material??

Gary J
N5BAA
HCARC Secretary 2013




----- Original Message ----- 
From: <W4wj at aol.com>
To: <hcarc at mailman.qth.net>
Sent: Sunday, December 16, 2012 4:09 PM
Subject: [HCARC] Fwd: Crank Over Rohn Tower


> Gary...
>
> A quick FYI...    DO NOT USE galvanized (water)  pipe.  I won't say
> anything more than that as it will get too
> involved.  Aluminum mast is also questionable, especially  in longer
> lengths.
>
> The CORRECT mast is chrome-moly or some such stuff.  Much  stronger.
>
> For longer masting, like 24 feet, you want at least quarter  wall 
> (1/4")...
>
>
> 73
> Don
> W4WJ
>
>
>
>
>
> ____________________________________
> From: qltfnish at omniglobal.net
> To: hcarc at mailman.qth.net
> Sent: 12/16/2012  4:01:49 P.M. Central Standard Time
> Subj: [HCARC] Crank Over Rohn  Tower
>
>
> I post on Homesteadingtoday.com and received this post the  other day.
>
> "..My tower setup was 70 feet of Rohn 25 G tower , had a 3  element 
> triband
> beam , HYgain 20-15-10 meters , and a 40 meter single bander  made by
> Cushcraft ! Mast was a 21 foot stick of 1 7/8's galvinized pipe x 1/8  in 
> wall
> thickness !
> .................The ENtire setup was A Crankover , I  used a 3500 pound ,
> 2 speed hand crank winch with 1/4 inch stainless aircraft  cable . I built
> my own steel "V" shaped brackets with a pulley attached .  People told me 
> the
> tower would break in half because of the load at the very  end of the 
> tower
> . But , I fabed a "Sway brace" made from Standoffs and a  steel cable that
> ran the full length of the tower with a turnbuckle anchored  at the base .
> Once tightened the the load at the end of the tower was  transferred down 
> to
> the base and the tower became a Rigid digit . IT was SO  strong I could 
> Hang
> off the mast when I had it crancked almost all the way  down which was
> about 200 lbs ."
>
> My neighbor wants to get rid of 4  sections of Rohn tower if I can find
> people to take it down - safely.  I  wonder if those 4 sections could be 
> hinged
> and dropped like he  indicates.  It sure would be easier than climbing a
> tower to change  antennas.  I assume his sway brace was a cable that was
> attached at the  top and ran up and over a stand off at about the 20 foot 
> level
> and then  attached at the base so when tightened it stiffened the tower.-
> maybe one on  each side of the triangle.  I asked him to send me a picture 
> or a
> drawing.
>
> Gary J
> N5BAA
> HCARC Secretary  2013
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