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Robot 2 • Funky Chicken Techno-Walker
Top of Body Step 11
Attach the large pulley to the axle,
and insert the axle pin into the
pulley. It is often advantageous
to extend a controlling axle so that
you can control motion manually. In
Top of Body Step 11, the pulley you
attach to the axle allows you to turn the pulley and
test the walker manually before you run the motors.
Top of Body Step 12
Slide
the worm gear and
the bushing onto the axle,
then connect the axle joiner.
Bricks & Chips…
Worm Gears
Worm gears have a unique property among gears in LEGO—they slide. When you want
a worm gear to actually drive another gear, you don’t want the worm gear to slide and
disengage. In these circumstances, always make sure to brace the worm gear with
bushings, so that the worm gear does not slip.
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