8839 studless

This model was built for a contest. Features manually working propellers, manualy operated crane and steering. Instructions are available for free here. Parts list is available at Rebrickable.

8443 studless

This model was built for a contest. Features manually operated steering, pneumatically operated claw and arm. Instructions are available for free here. Parts list is available on Rebrickable.

Sandvik TH550 comparision

 

Almost five years after creating my Sandvik TH550 model I finally had a chance to take pictures comparing it to real machine.