Page 74 - Lego Mindstorms

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Robot 2 • Funky Chicken Techno-Walker

Head Step 12

Give our head some odd antennas by
attaching a tube (in your choice of color)
to each axle from Head Step 11. Then
attach a yellow rubber band to both the
large and small pulley wheels.

Bricks & Chips…
Gears versus Pulleys

A geartrain is not always the best solution for transfer of power. In this robot, we
achieve a transfer of power from the motor to the head by use of a pulley system. The
pulley system also has a natural “clutch” system—when the motor experiences a certain
amount of resistance, it will still spin but the rubber band will slip. This prevents the
motor from stalling, which is a good thing since a motor will drain a lot more power
from your batteries when it is stalled than when it is functioning normally.

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