How to build a pulley car.

How to build a basic car with no motors.

How to build train wheels with the RCX system.

Building a vehicle with the RCX system. Includes how to attach motors, choose wheels, gear up, gear down, use pulleys, and use special gears: the bevel gear, cam, differential, worm gear, gear rack, and crown gear.

Using the crown gear to change axis.

How to build a bevel gear using the RCX system.

Bracing a structure using the RCX building system.

How to build a sturdy structure out of LEGO bricks, testing the stability of structures made with the "Flick Test".