Making Lego Car CLIMB Obstacles,Science & Technology,lego technic,Testing a Lego car against different obstacles and improving it until it becomes a capable climber.
Demonstrates what you need to consider: wheel diameter, gear ratio, 4-wheel drive, tire grip, breakover angle, weight distribution.
Making a GOOGOL:1 Reduction with Lego Gears,Science & Technology,lego technic,gear ratio,gear down,gear reduction,math,exponential,googol,Building a long gear train using 186 Lego gears. Many different types of Lego gears are used. Enjoy!
Inspired by Daniel de Bruin's "universe's biggest gear
Dragon Force - Through the Fire and Flames