term for the angle between
plane of the motorcycle and the vertical plane. The more the motorcycle is leaned over, the greater the lean
angle. High lean
angles are necessary when cornering
a motorcycle at high
velocity, but too great a lean angle results in loss of traction and often a crash. Riders
employ a technique called hanging off
in order to alter the rider-motorcycle system's center of mass
minimize the lean angle necessary to negotiate a corner at a given velocity.
Establishing and maintaining the correct
amount of lean angle is a balancing
act that a motorcycle roadracer must master in order to ride fast.