Bill,
As I communicated to you in a private email, instead of having the pulley,
two strong workers, consider the following for a "single op" process.
Use the Hand Hoist device I suggested that has a worm gear mechanism, and a
hook on each end with the 10 ft. of steel cable in the hoist. It can hold
1500 lbs. and requires no special handling like a come along. Really easy
to let it out or pull it in. Secure the one end out on the boom like VE5RA
suggested but use the handhoist winch to give you the lift support as you
pull the boom through the boom to mast plate, seeking the balance point.
I made a bracket that provides a nice heavy duty support on the mast and
above the antenna to secure the hand hoist. The bracket I made comes from
1/2 thick angle iron and I mounted two large UBolts on one side (mount to
the mast) and the other surface, I drilled a hole to accommodate putting
the hand hoist hook in. Forms a nice, strong point to lift and pull the
boom toward the center as you nurse it through the boom to mast plate.
This particular angle iron support
happens to be about 6 inches long that serves nicely as a step, in case I
have to climb a mast. Large surface area for my foot. With a couple of
these steps, I can easily reach up high on a mast, safely.
In reflecting further on this repair, might be helpful having some one
crank on the hand hoist, while another pulls the boom through. (2 man job
again!) It is a finesse job. When balance is achieved, then tram the
antenna to the ground. You will fall in love with this hand hoist device.
Great for heavy lifting in short distances (10 ft.) with easy control.
Regards,
Mark, K1RX
Doug Renwick <ve5ra@sasktel.net>@contesting.com on 04/04/2005 10:35:07 AM
Please respond to ve5ra@sasktel.net
Sent by: towertalk-bounces@contesting.com
To: TOWERTALK@contesting.com
cc:
Subject: Re: [TowerTalk] When a Yagi Looses an Element
Bill,
When you climb up, take along some rope, a pulley, and some clamps also.
Unless you have two strong tower workers, you may find the antenna to be
too unbalanced to pull through the boom to mast plate without some
additional
support. Mount the pulley on the mast high above the antenna and run the
rope far out the antenna boom like a truss. Use this truss arrangement to
keep the boom from dropping and catching on the guys, etc.
Initially, as Steve would say there is a pucker factor, but it will go
easier
than you first believe.
Doug
Cqtestk4xs@aol.com wrote:
> Thanks for all the advice on fixing my 4 el 40 KLM monster. After
digesting
> all of it I think I have hit upon a plan.
> As far as balancing the now unbalanced beam, I plan to use a come-along
to
> 'pull' the boom through the mast to boom plate enough to get the antenna
more or
> less balanced prior to tramming it down.
>
> Getting this antenna up was not a job for the faint hearted, but with
lots of
> experience since 97 it should be easy enough to get down without a crane
> (cost factor $1000 plus), and back up.
>
> I plan on doing this within the next two weeks and will let you all know
how
> it goes.
>
> Bill K4XS
--
Doug Renwick VA5DX
PO Box 50, Clavet, Saskatchewan, Canada S0K 0Y0
VE5RA@sasktel.net
First VE5 5BDXCC, 160M DXCC & 9BDXCC
What profit it a ham if he gains all the awards yet forfeits his soul?
I'll run the race and I will never be the same again.
_______________________________________________
See: http://www.mscomputer.com for "Self Supporting Towers", "Wireless
Weather Stations", and lot's more. Call Toll Free, 1-800-333-9041 with any
questions and ask for Sherman, W2FLA.
_______________________________________________
TowerTalk mailing list
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_______________________________________________
See: http://www.mscomputer.com for "Self Supporting Towers", "Wireless Weather
Stations", and lot's more. Call Toll Free, 1-800-333-9041 with any questions
and ask for Sherman, W2FLA.
_______________________________________________
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