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In lugnet.town, Ross Crawford wrote:
> In lugnet.town, Jacub Maur wrote:
> > Here is a mini fig scale Gottwald AMK 1000t mobile crane. There was only one of
> > these ever built. This Lego crane uses 2 micro motors, one running the main
> > hook, and the second running the hold back line for the jib. The counter weight
> > is made up of 2 9v battery boxes and two of the Lego weight bricks. On either
> > side of that, there are two red containers full of BB pellets. The boom at full
> > extension, with the jib, is 4.5 feet or 137 cm long. So far, it can lift a fair
> > bit. The out riggers are very rigged so it is very stable. The main hook uses 4
> > independently spinning pulley’s that helps the hook move smoother.
> >
> > You can see the trucks needed to carry all the parts for set up at
> > www.brickshelf.com/cgi-bin/gallery.cgi?f=151088.
> > There was a small crawler crane needed for assembly and this one worked well.
> > The truck that brings in the main boom works the same as the real one. The
> > service truck and trailer are needed for transporting the out riggers and also
> > used for further assembly and carrying the main hook. The heavy load transport
> > was a copy of one seen at an oil refinery bringing in massive tanks. The tank
> > was taken from the Lego fuel train car.
> >
> > You can see the set up of the out riggers, main boom and the hook at
> > www.brickshelf.com/cgi-bin/gallery.cgi?f=151094.
> >
> > And finally the boom is up and the jib is attached
> > www.brickshelf.com/cgi-bin/gallery.cgi?f=151098.
> > I was very surprised to see how well it worked and how far the reach was without
> > the crane falling over or coming apart.
>
> Hi Jacub, that's a really nice crane! I especially like the support vehicles you
> built for it, really makes it complete. Is the jib held on with rubber bands?
> Nice simple idea!
>
> Did you drill out the centre of the 1/2 bushes so they rotate independently?
> That must have been a tedious job!
>
> One little gripe I have is the size of your photos - I don't like scrolling
> around to see details in huge pics. I recommend you use a program like Irfanview
> http://irfanview.com/ or similar to reduce the size to 800x600.
>
> Regards
>
> ROSCO
Hi Ross, sorry about the picture size, I did not even think about this problem.
I will look at resizing them. Sorry everyone.
My father in law is a machinist, so he fixed the Bushing issue. He also made a
metal shaft that fit the size of the Lego holes so this also works. Modified
parts are needed some times. I did use elastics to hold the jib in place, but I
used an L bracket piece which holds onto 2 inverted 1 x 6 Technic beams. The
entire thing holds together Very well.
Thanks for the comments.
Jacub
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