Drive the robotics at the City.

Gears with levers can be used to make walking models.

Challenge - make a vehicle that has a sign rotating as the wheels go forward and back.


The merry go round uses crown gears to change rotation 90 degrees.

Making changes to the pulley or gear drivers and followers can change speed.

Modifying the merry go round as a vehicle works for the challenge.

See the City
by using the links below.