Hi all! I thought I share something I have been working on for a long time now.
This is probably the fourth generation of my crawler crane. Overall the project has been ongoing for several years.
The total height about 5,5 meters. The weight is not checked, but the counterweights adds up to quit lot as there are consisting of lead bullets for the superstructure and steel plates as the central counter and for the extra counterweight platform connected to the super life. The lifting capacity is somewhere between 10-20 kg, maybe more. Have not tried to test is more.
The drive for the crawler band consists of 4 XL-motors, 2 XL motors are used to rotate the superstructure and a total of 5 XL motors drive all the rope drums. Everything is controlled via PF, and power comes via a transformer that leaves 12 V (ie more than the motors running normally, but it actually works well anyway).
The entire model is just like real life cranes composed of different modules to simplify transport and storage, and to enable it to be set up in different configurations.
http://www.flickr.com/photos/67685578@N04/6313390746/in/photostream
http://www.flickr.com/photos/67685578@N04/6312868981/in/photostream
http://www.flickr.com/photos/67685578@N04/6313388600/in/photostream
I have more pictures on my flickr and older pictures on my now closed Brickshelf-account.
http://www.brickshelf.com/cgi-bin/gallery.cgi?f=413077