Page 333 - Lego Mindstorms

Robot 10 • RIS Turtle

Turtle Step 29

These
gears connect
one side of the
differential to the gear
shifter, and provide a gear
on the other side for the motor.

Turtle Step 30

Add a layer of
beams. Now you can
see the brick that the
medium pulley slides against,
preventing the gear shifter crank
from coming loose. The half-length pin (which
is not visible in this step) is inserted in the back
beam right behind the gear shifter in the fifth hole
from the end. Its purpose is to prevent the gear
shifter from catching in the beam’s hole at that point.

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