Lego Technic Ponsse Scorpion King Tree Harvester

This is a new video of my earlier Scorpion King because I did modifications: The cabin roll and tilt functions are now pneumatic and also the opening/closing function of the cutter head is now pneumatic. For the rotation I added a second gear wheel to make it work better and to be stable enough you need to pump the cabin roll cylinders very hard. The building instructions are available at Rebrickable: #comments. Enjoy the model!