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Author Topic: wire rope, how strong do I need it?  (Read 583 times)
WB8VGE
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« on: April 22, 2013, 01:52:29 PM »

Gang,

I have a 50 foot universal tower on my deck just waiting for the weather to break. Got  someone lined up to dig the hole ( a big one) and, gasp! found out the price of concrete is per yard.

now the end of the tower will have a hex beam, rotor of course and a few wire wire antennas hanging down. I plan in using a tall step ladder that the rope will glide along so i can increase my lift angle and get this thing in the air. All the grunt work will be done by the 12000 lb winch on the front of the Jeep.

So, what size wire rope should i look for? I don't want nor will I use natural rope as I haven't figured out a way to untie it from the top and or retie it if necessary. SO the rope will be there all the time.

3/8 inch seems overkill

So all you experts, what's the options

mike, wb8vge
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W1JKA
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« Reply #1 on: April 22, 2013, 04:26:31 PM »

  You need to know the weight you intend to lift.The safe working Load (SWL) for WIRE rope is the Diameter squared x 8 = SWL in TONS.You may also have to figure in possible added tension depending on pull angle between winch and end of tower if it is flat on ground.Diameter of wire rope is measured top to top of the opposing single cable lays,never from top to top of the two opposing side by side flat across lays.Are you intending to use the step ladder in lieu of a gin pole?
« Last Edit: April 22, 2013, 04:29:14 PM by W1JKA » Logged
WB8VGE
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« Reply #2 on: April 22, 2013, 07:27:16 PM »

Yes, to supply the needed lift angle

Might try a large 4x4 if I can find one high enough

I'll try and compute the total weight of the loads

Mike wb8vge
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