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EXPERIMENTS
A. Change the claws
1. Lift up the front plastic panel. Press the tabs
on C9 and C10 toward each other to release
the current claw piece.
2. Snap the new claw pieces into C9 and C10.
Experiment to see which claws work best for
picking up a variety of different objects!
B. More direct control
1. Remove the flexible shaft and the small shaft
A3.
2. Connect the crank A2 directly to the connector
A5. Observe the differences in how the worm
screw operates with this configuration.
C. Gears, gears, gears
1–4. Try all of the different gear train
combinations below, and invent your own!
5. Which one moves the arm the fastest? Which
one is the easiest to turn? Note which
direction each gear turns in each setup.
When you need to refill
the hydraulic system with
more water, you don't have
to take the tubes entirely
out of the machine. Just
disconnect the tubes at
the tube connector, put the
ends of the tubes in a cup
of water, and pull on the
hydraulic pistons to draw
more water into the tubes.
14
A1
A2
B1
C1
C3
C2
C4
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