Subject:
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Re: My Latest MOC: 1.4m Boom Crane
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Newsgroups:
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lugnet.build, lugnet.technic
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Date:
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Fri, 9 Feb 2001 03:02:47 GMT
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Viewed:
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261 times
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In lugnet.build, Jeff Elliott writes:
> Thanks, Bob,
>
> I've taken several more pics of the crane, and uploaded them to
> Brickshelf.
>
> http://www.brickshelf.com/cgi-bin/gallery.cgi?f=3177
Thanks!
> Some comments:
>
> The turntable is enclosed, since it was neccessary to provide tiles for
> the crane body to slide on. The base of the table is gray; the rotating
> parts are red. There is a standard technic turntable in there, and it's
> driven by a worm gear: you can see the axle leading in. I used
> universal joints to connect to the motor since it interfered with the
> crane body if I placed it in-line with the worm. The 3:1 reduction is
> just to slow it down; it's plenty powerful.
Have you noticed the shaft with the worm gear turning unevenly (jumping)? If so
it can be reduced by rotation one of the u-joints 90 deg relative to the other
(so the slots line up, rather than 90 deg offset). This probably wouldn't
affect the actual turntable rotation, because of the "play" between the worm &
the turntable gear.
> The counterweight is absent in the pics; having a 3 lb weight hanging
> over my head all the time seems like a bad idea :)
I also only attach the counterweight while it's operating 8?)
ROSCO
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Message is in Reply To:
 | | Re: My Latest MOC: 1.4m Boom Crane
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| Thanks, Bob, I've taken several more pics of the crane, and uploaded them to Brickshelf. (URL) comments: The turntable is enclosed, since it was neccessary to provide tiles for the crane body to slide on. The base of the table is gray; the rotating (...) (24 years ago, 8-Feb-01, to lugnet.build, lugnet.technic)
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