Subject:
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Re: New Tower Crane
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Newsgroups:
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lugnet.technic
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Date:
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Mon, 27 Aug 2001 21:01:18 GMT
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Viewed:
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1081 times
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On your website you talk about changing the winch and doing something
different than a rack gear system.
I saw this once on a light-duty construction crane:
http://www.texbrick.com/quick_pics/tower_crane.jpg
I'm not 100% certain about the mechanism that drove the trolly back and
forth, but the lifting line was oriented this way. This forces you to have a
2-part block.
On the tower crane I built years ago, I used a loop of chain to drive the
trolly back and forth along the boom. This had problems because the chain
was flexible- it stretched axially (particularly in the long length used),
but I'm sure string suffers the same problem.
TJ
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Message is in Reply To:
 | | New Tower Crane
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| I have just updated my web site with a new tower crane built a few weeks ago. I would very much appreciate your comments. Something I am interested to know is what type of string you use for your crane winch? I used Carpet Stiching Twine for it's (...) (23 years ago, 27-Aug-01, to lugnet.technic)
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