400 Series Demolition Excavator

This Lego excavator is not modeled after any particular "real life" machine, I just set out to make a simple excavator that had a full range of motion and capacity that could load up my other Lego dump truck sets. 

This model has a working version of every main feature a "real life" excavator would have. The features are as follows:  rotating cab, weighted tail ballast for increased load handling, full range dipper arm, full range digger arm with extension lock out, dozer blade with 4 locking positions, moving tracks, lifting engine hood, and lift up cab access.

This model also has three unique attachments: a digging bucket with locking scoop and dump positions, an elastic powered claw for large items, and a functional demolition hammer with rapidly rotating cam.