Crane Boom

August 2007

 

This was my first personal building project using the new LEGO beam pieces. I had built the LEGO Tow Truck technic set, and found the beam approach both intriguing and frustrating. I was intrigued because a peg-and-beam approach allows you to build lighter and stronger structures with less pieces. I was frustrated because the classic approach to LEGO building of sticking bricks together no longer worked; to get a working model you had to think and adopt a modular building approach.

I decided to try a very modular project using the beams from the Tow Truck and my new NXT set; a Tower Crane. There are many many good examples of tower cranes already on the Internet, so I don’t claim to have invented anything new. In fact I haven’t even posted a design for the tower piece, as that is relatively straightforward to build.

This was a learning exercise for me in:

  1. 1.Build using a peg-and-beam approach

  2. 2.Build modules that integrate into a whole

  3. 3.Build light but strong

  4. 4.Learn a LEGO CAD program to document the design


Construction

MLCad file for the trolley that runs on the boom: BoomTrolley.ldr.

Download a zipfile containing the boom trolley building instructions (1MB).

The step-by-step boom trolley instructions

MLCad file for the module for building the crane boom: CraneBoomModule.ldr

How to put the modules together and build the rail for the trolley: FullCraneBoom.ldr. Download a zipfile containing the final assembly instructions (6MB).

The step-by-step boom module and final assembly instructions

Last updated 23 May, 2008


All content © 2008 Mark Crosbie  mark@mastincrosbie.com


LEGO® is a trademark of the LEGO Group of companies which does not sponsor, authorize or endorse this site. This site, its owner and contents are in no way affiliated with or endorsed by the LEGO Group. For more please read the LEGO Fair Play policy.