BETA
The mechanics of the kickflip
Invented by Rodney Mullen in 1982, the kickflip requires applying an off-center force. By flicking the front foot off the side of the nose, the skater applies torque, initiating a rapid 360-degree roll. The board rotates at speeds up to 400 revolutions per minute before being caught by the feet.
Chapter 1
The ollie and the laws of motion
Chapter 2
Energy and momentum on vert ramps
Chapter 3
Street geometry and balance
Chapter 4
The materials science of skateboards
Ch 3 · Street geometry and balance
nic Flicking the board off-center applies torque, causing it to flip along its longitudinal axis.
Fun Fact
Friction control: Skateboarders use paraffin wax on ledges to make concrete as slippery as ice.
Glossary
center of mass (noun)
A point representing the mean position of the matter in a body or system. In 1989, Natas Kaupas shifted this point to spin atop a Santa Monica fire hydrant.
A point representing the mean position of the matter in a body or system. In 1989, Natas Kaupas shifted this point to spin atop a Santa Monica fire hydrant.