The diff-lock truck
Engineers (Advanced), mission M4 Steering & Differentials, lesson 4 of 6.
Hook
Differentials have one big weakness: mud. What do off-road trucks do?
Fair test
One wheel on a slippery sheet: try diff open, then locked. Does the truck escape?
Bonus challenge
Why must you unlock it before turning on a hard road? Test and explain.
The build
- 🔒 Diff-Lock Mud Truck: Stuck in the mud? Slide the diff lock and both wheels are forced to turn together! (level 4 of 5, about 60 minutes, 33 steps)