The crank excavator arm
Engineers (Advanced), mission M9 Factory Automation, lesson 2 of 6.
Hook
Loading the belt takes a digger. Three joints, one operator. Can you control them all?
Fair test
Time scooping 5 pompoms into a cup. Which joint slows you down most?
Bonus challenge
Two operators, one arm: can you work as a team?
The build
- 🦾 Crank Excavator Arm: Crank the worm gears to swing the digger round and lift the boom — then dig! (level 4 of 5, about 50 minutes, 22 steps)