[TowerTalk] FW: Cutting 2" Heavy Wall Cr-Mo Mast Up on Tower

J.P. jp at ezoom.net
Sat Jul 26 18:50:15 EDT 2014


I just don't see the reasoning behind destroying a very expensive piece of metal.  Is it that there's too much empty mast sticking out of the top of the tower? If so, what's the harm?

W2XX/7


On Jul 26, 2014, at 2:40 PM, Victor Walz <n2pp at frontiernet.net> wrote:

> I want to clarify the current situation of the mast relative to my
> methodology and safety issues.
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> The 22 ft mast has been lowered in order to remove all the antennas.  The
> top of the mast is currently 4 ft above the top of the tower.
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> The weight of the mast is supported at three support plates and a steel
> support under the bottom of the mast.  My chain hoist is also supporting the
> mast.  My intention is to use my heavy duty gin pole to lift the 10 ft
> section from the top of the tower once it has been cut.
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> Thanks for all the input that I have received so far.
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> Vic,  N2PP
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> of the current situation.
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> From: Victor Walz [mailto:n2pp at frontiernet.net] 
> Sent: Saturday, July 26, 2014 1:47 PM
> To: 'towertalk at contesting.com'
> Subject: Cutting 2" Heavy Wall Cr-Mo Mast Up on Tower
> 
> 
> 
> I have a 22 ft (2" OD) heavy duty Cr-Mo mast presently installed up on a 100
> ft Rohn 45 tower.  It weighs 200+ pounds. I previously had a 4 el 20 meter
> yagi stacked 12 ft.  above a 40 meter F12  yagi.  I just finished removing
> both antennas for repairs and have decided not to reinstall the stack due to
> the complexity of the installation.    I will be re-installing the 40 meter
> yagi and some VHF antennas on this tower.  Consequently, I would like to
> shorten the 22 ft mast by 10 ft.
> 
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> I am looking for advice on the most efficient way to cut this very thick
> high strength mast in place.  I would prefer to use battery-operated tools
> such as a reciprocating saw(metal blade?) or a grinding tool (cutting
> wheel?).  I can run 120 VAC (about 200 ft extension cord) up the tower if
> needed.
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> What would be the optimum method for cutting this mast without excessive
> tower time?  Thanks in advance for any responses.
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> Vic,  N2PP
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> _______________________________________________
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