Subject:
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Re: City Crane
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Newsgroups:
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lugnet.technic
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Date:
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Sun, 23 Feb 2003 22:08:39 GMT
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Viewed:
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1061 times
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In lugnet.technic, Thomas Avery writes:
> In lugnet.technic, Ross Crawford writes:
> > Another minifig scale crane using parts from the new "bridge parts"
> > accessory pack.
> >
> > http://www.lugnet.com/~469/projects/citycrane
>
> Cool! It's a good demonstration of how tower cranes work. I remember someone
> asking here quite a while back about the traveling block and how it • functioned.
>
> The 2-part/4-part arrangement is quite clever. I also liked how you have the
> traveling block winches linked with a clutch.
Well that actually came about because the string I was using stretched so much
and I kept having to adjust it 8?)
> Now, how about a little pre-compression for your main column?
> http://www.texbrick.com/creations/bridge_straight/col_3d.jpg
>
> :-) Perhaps that would help you lift heavier loads! But then I'm always
> thinking bigger, heavier, etc. ;-)
Yeah, I know so am I 8?) but I figured these cranes arent designed to lift much
anyway 8?P. There main design feature is ease of assembly / disassembly - once
the foundation is laid, they can be assembled in 3 or 4 hours as opposed to a
day or 2 for cranes like these http://www.lugnet.com/~469/projects/towercrane
One thing that I do want to do is look at twisting in the tower, which is a
problem with this design.
ROSCO
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Message is in Reply To:
 | | Re: City Crane
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| (...) asking here quite a while back about the traveling block and how it functioned. The 2-part/4-part arrangement is quite clever. I also liked how you have the traveling block winches linked with a clutch. Now, how about a little pre-compression (...) (21 years ago, 23-Feb-03, to lugnet.technic)
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