eHam.net - Amateur Radio (Ham Radio) Community

Call Search
     

New to Ham Radio?
My Profile

Community
Articles
Forums
News
Reviews
Friends Remembered
Strays
Survey Question

Operating
Contesting
DX Cluster Spots
Propagation

Resources
Calendar
Classifieds
Ham Exams
Ham Links
List Archives
News Articles
Product Reviews
QSL Managers

Site Info
eHam Help (FAQ)
Support the site
The eHam Team
Advertising Info
Vision Statement
About eHam.net


eHam.net Classifieds Detail


[Classifieds Home]   [Configure]   [Help]   [Search]   [Add]  


Date Posted by Category User IP

2013-12-23 (UTC)

K3ANS

Towers & Access

64-121-208-143.c3-0.eas-ubr2.atw-eas.pa.cable.rcn.com

Tower raising and lay over system

For sale:

System to raise and lower a Rohn 45 tower that held several very large
ham yagi antennas and the ends of many wire antennas. The walking
“gin pole” is a horizontal 50 foot section of Rohn 45. One vertical
tower was 105 feet long. They were connected with guy wires at three
levels, around 100 feet, 70 feet, and 40 feet. The two sections are
attached to regular Rohn base plates. They are welded together in a
90-degree angle. The walking gin pole functions as a lever to raise
and lower the antenna tower. Two 2” square bars about 2 feet long are
welded to the plates, and extend a few inches past the plates. Two
similar 2” square bars about 2 feet long are in the concrete tower
base, and are welded to a fabricated and welded rebar cage inside the
concrete base. The two sets of square bars have holes drilled through
them and are connected with ¾” bolts, that act as hinges. The first
10-foot section of the horizontal Rohn 45 tower is braced to the first
10-foot section of the vertical Rohn 45 tower with four sections of
welded 2” angle irons. I have another identical Rohn 45 tower
installation that is 80 feet tall and has a 40-foot gin pole. It uses
the same system. I do not remember what that systems cost. I used
salvaged steel, and most of that installation cost was in labor for
fabricating and welding. I would like to sell two of the lay over
units, each including the two sections of Rohn 45, two base plates,
and angle iron. Preferably, the buyer would buy the system and use it
as made.

The winch is a Beebe International W-200-5, 3,000 pound rating. I
believe it has a 25:1 gear ratio. It has a removable manual handle.
I believe Beebe is no longer manufactured. Ingersoll Rand owned
Beebe, but it is out of business. The closest replacement I found is
a Thern brand model 482, with a 26:1 gear ratio, 4,000 pound rating,
and 300 foot ¼” cable capacity. Grainger sells it for $1,524, item
no. 3DNZ8.

The Beebe winch is connected to a portable Sweeney 5:1 gearbox with a
¾” input and 1” output. It has a 2,000-pound capacity. I cannot find
a similar gear box for sale. I called Hydratight, 1-800-569- 6807,
which is a Sweeney dealer and repair service. They are not familiar
with this model. I found no model number on it. The Hydratight
representative guessed a new similar gearbox would sell for a few
thousand dollars! I will continue to shop around for more
information. I bought it surplus from a machinery dealer, and did not
pay new retail price. It cost me $150 in 1990, so at today’s prices
it is worth about $250.

150 feet of 1/4” diameter aircraft style galvanized wire rope is wound
on the winch. It has a breaking strength of 7,000 pounds. When the
tower is laid over, the cable goes to the top end of the gin pole,
through a snatch block, and back to the anchor, a steel frame mounted
in concrete holding the gearbox. www.Amazon.com sells similar wire
rope for $551.07 for 250 feet, $0.60 per foot. It is their part
number B0038YY358. Prorated, 150 feet would cost $331, if they sold
short lengths.

I power the winch with a Makita ½” drill, which is not for sale. You
can buy any ½” drill. Coupling the drill to the Beebe winch, I use
the Sweeney gearbox. It has ¾” input.

I had a custom “drill bit” made with a ¼’ square coupler that slides
over the Sweeney input. It cost me $25 in 1990. It would probably
sell for $40 today. Coupling the Sweeney gearbox to the Beebe winch I
had a custom ½” to ¾” adapter made. It cost me $10 in 1990. My guess
is that it would cost $20 today.

As explained above, the wire rope goes through a snatch box on the
“gin pole”. I used a B-Special drop side snatch block, model 733-
9764. It has an 8,000-pound capacity. I cannot find B-Special listed
anywhere. It cost me $108 in 1990. I did find other brands of
similar capacity for about the same price. They are imported, whereas
the B-Special was American made, which explains the same price today.
I added an anchor shackle 5/8” screw pin, with a 3 ¼-ton capacity, to
hang he snatch box from the “gin pole”. Remember the gin pole is
actually Rohn 45 tower. It is worth about $10. The winch, wire rope,
gearbox, couplers, snatch block, and accessories are part of a system,
and I want to sell them as a package.

90 feet of the 105 foot Rohn 45 tower and 40 feet of the 50 foot Rohn
45 horizontal tower section (gin pole) have been sold. 70 feet of the
80-foot tower and 30 feet of the 40-foot horizontal section are for
sale now.

The 80-foot tower has a 23 foot, ½ inch wall, chrome moly 4130 steel
mast, which easily handles three stacked yagis, currently 15 and 10-
meter long boom yagis, and a UHF yagi. The same type mast easily held
a three element 40 meter Telrex full size yagi and a 5 element Hygain
205CA yagi, on the 105-foot tower, despite hurricane force winds. One
of the two masts has been already sold.

I also have another Rohn 45 fold over tower system for sale. I have
ceramic insulators, guy anchors, preforms, ¼” guy wire, turnbuckles,
etc. for sale.

I also have several Hygain Ham II and Tailtwister rotators and control
boxes for sale. I have many parts, hardware, antenna current baluns,
¼” Dacron rope, pulleys, shackles, etc. for sale. I have thousands of
feet of 7/8” diameter Prodelin 50 ohm hard line for sale, $1.999 per
foot. I have many connectors for sale to hard line buyers only. They
are hard to find. Some were manufactured by Prodelin. Others were
custom manufactured by a local machine shop. Talk to me regarding
those details.

If you are interested in the above system, please call me, and make an
offer. If you are not interested, please spread the word to other
hams. I am downsizing and disposing of my ham contesting and DXing
station. These antennas and towers played fabulously, but I am too
old and weak to continue rigging and maintenance.


After posting the above for sale, I had some inquiries that I answered
as follows. The additional description might help you understand what
is for sale and how it works.

I am selling the winches and gearboxes, but would also like to sell
the two units for laying over the towers. I will take photos and post
them soon.

Each unit has two sections of Rohn 45 welded together in an L shape.
In turn, the vertical section is attached to the standard Rohn base
plate through its tubing. The horizontal section is welded to the
base plate. The vertical and horizontal sections are then braced by
two angle iron sections as diagonals, welded from section to section,
to form a triangle.

Next, I welded two 2" bars horizontally on the base plate, extending
about 2" beyond the edge. I inserted two more 2" bars vertically in
the concrete base before it set. The vertical bars were in turn
welded to an iron rebar cage inside the concrete. I ran thick bolts
with washers and nuts through the bars to act as hinges. I added
grease fittings to the bars to lubricate the hinges.

When assembled, one tower stood 105 feet tall and the horizontal
section of Rohn 45 was 50 feet long. The other similar tower was 80
feet tall with a horizontal section 40 feet long. The 23-foot masts
extended about 13 feet out the top, so they could each hold two or
three yagis. The horizontal section is known as a walking gin pole.
When laid over the 50-foot section stood vertically with the pulley
attached and winch cable run through it back to the steel base for the
winch. That gave me a 2 : 1 ratio for raising, thus reducing the load
in half.

The system works slick with no problems. I can raise and lower the
towers with many antennas attached all by myself. The only obstacle
is occasionally the moving guy wires at the sides get tangled in
nearby brush and tree limbs, which I keep trimmed. It helped to have
my loyal wife walk around while the tower was going up and down to
watch for any problems.

I lowered the towers so the longest yagi boom rested about a foot
above the ground. As a safety measure, I rested the top end of the
tower on a scrap piece of short tower. That way I could walk or climb
on the tower without fear of it dropping or swaying. Then, I laid
extension ladders against the now horizontal mast or tower to work on
the rotator, yagi, guys, wiring, etc., near ground level, rather than
climbing 100 plus feet into the air. That was great especially in the
winter when the wind chill could be near zero degrees!

As an extra safety measure, I also ran an extra cable from the winch
end to the now vertical end of the gin pole section of tower, so it
was stretched tight when the now horizontal section of tower was at
the one-foot level. Thus, when cranking the tower over, I did not
have to worry if I lowered it too far and crushed the yagis.

The packages that I advertised include the four pieces of Rohn 45.

Separately, I have for sale the 80-foot tower with its 40-foot
horizontal sections. That means I have 70 plus 30 feet of Rohn 45 for
sale, along with one chrome molybdenum 4130 steel, 1/4" wall, 2" OD,
23
foot long mast I also have two Rohn thrust bearings on the tower. I
already sold the 105 foot tower with its 50 foot horizontal section
mast, prop pitch rota tor, etc.
I also have a Hygain Tailtwister rotator on that tower for sale. I
have additional Hygain Ham II rotators for sale. Plus, I have many
parts left from my multi-multi contest station operation and
construction. I am trying to liquidate all, to downsize and simplify
my life. If you visit to purchase the tower lay over system, tower
sections, mast, etc., I can show you the other accessories.

73, Bill

William N. Goodman, CPA -- K3ANS Residence: 765 Young's Hill Road,
Easton, PA 18040-6726
Home telephone: 610-258-5063 Office telephone: 610-253-2745 Fax:
610-253-9773 Cell phone: 484-241-6176
E-Mail: wgoodman@goodmancpa.com or k3ans@arrl.net

Email: **Please Login To send an email** Email this to a friend!
Previous: WTB: Palstar R30A    More Recent: KENWOOD TS-2000 package deal (REDUCED)