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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
A2
C1
C3
A1
B1
C2
C4
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