Subject:
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Re: Crawler Crane MOC
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Newsgroups:
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lugnet.modelteam
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Date:
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Wed, 21 Nov 2001 11:09:06 GMT
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Viewed:
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4874 times
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Hi Beat,
About the lifting capacity. Seen this crane?
http://www.brickshelf.com/cgi-bin/gallery.cgi?i=65247
http://www.brickshelf.com/cgi-bin/gallery.cgi?i=65248
http://www.brickshelf.com/cgi-bin/gallery.cgi?i=65287
http://www.brickshelf.com/cgi-bin/gallery.cgi?i=48746
http://www.brickshelf.com/cgi-bin/gallery.cgi?i=48747
This guy claims it can lift more than 10 kg. I've seen this crane several
times, but he huses to many non-LEGO components. The crane is also much to
heavy, it almost collapst for several times on events .... He think LEGO is
the strongest constrution material I guess ...
I can asure you: don't lift too much. The bricks will break once.
It's nice to know more about your Liebherr. It's a shame you can't show it
in Ochten next year, but I know your situation. I wouldn't go to far to show
my models. In '97 I got an invitation for an event in Hamburg. That's much
too far I think. But who knows, maybe I will meet you soon.
Dennis
In lugnet.modelteam, Beat Felber writes:
> In lugnet.modelteam, Dennis Bosman writes:
> > Are the 9V motors strong enough? I red you use two 9V motors for the
> > revolution of the superstructure. Does is shock? Former I had some problems
> > with that and actually still have with my CX700 Hitachi. But that's due to
> > the top heavy leader of this machine. My LG1550 did very well, but the drums
> > weren't fine to me.
> The 9V motors are strong enough. Sometimes it shocks a bit, when the weight
> is not well distributed (means that I either have too much or too less
> counterweight). The crane is able to do 0 to 1.2 revolutions per minute.
> When studying the spec sheet from Liebherr, I realized that I have to cut
> back on that point and reduce it to 0 to 0.6 rpm. Then the problem of the
> shocking will be solved (I hope).
> > I saw on Brickshelf you use those 40z gears for the drums. If you hold the
> > ropes tight, don't you have problems yours large gears are moving to the
> > side? Esspecially when you put a heavy lift in the hook. But it looks very
> > good, five drums, that's a lot!
> That's absolutely no problem. You have to know that the hook is parted
> between 6 and 20 times. Means that When I have 6 kg on the hook, which is
> already very much for my model (will realize this with the second version, I
> hope) then there's just 1 kg at the winch. And the winch is designed to
> withstand about 1.5 to 2 kg.
> > You boom seams to be very light. How much time do you need to build the
> > crane up? Esspecially the ropes needs much attention I guess ... (I speak
> > from experience) I think Thomas has this problem as well ...
> It needs a lot of time. About an hour to lift the main boom in its final
> position and minutes to hours to adjust the ropes. That depends.
> > I hope to see this masterpiece once in real life.
> Well, I hope to see you and your models once in real life too.
> There's just the problem with Ochten. It will cost me very much to travel to
> the Netherlands just for the one day of the show. I think I will not
> participate with my crane - sorry :-( Currently I am a student and therefore
> earn not that much.
>
> Greetings
>
> Beat
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Message has 1 Reply:
Message is in Reply To:
 | | Re: Crawler Crane MOC
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| (...) The 9V motors are strong enough. Sometimes it shocks a bit, when the weight is not well distributed (means that I either have too much or too less counterweight). The crane is able to do 0 to 1.2 revolutions per minute. When studying the spec (...) (25 years ago, 21-Nov-01, to lugnet.modelteam)
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