Product Idea |

Retro-Technic Helicopter

2 comments

This very sturdy, mechanically functional model was created using constraining methods and a small number of simple pieces. The design harkens to the days “Technic”—first called the Expert Builder series—was introduced. It purposely does not use many smooth pieces, or “stud-not-on-top” techniques to hide the fact it is made of LEGO. The model demonstrates several mechanical engineering principles. The obvious one is the gear ratio between the primary and secondary rotors. A less obvious one, is that of constraining degrees of freedom. This method is ubiquitous in professional LEGO sets, but not explained. It is purposely demonstrated in this model, however.

 

Video...

http://www.youtube.com/embed/0ornRSmbxTU