5 SUSPENSIONS
5.1 MEASUREMENT STANDARD
• REFERENCE PLANE: it is the plane where skid block and wooden plank are in contact, the skid block
is then the only suspended part of the car sitting below this plane.
• RIDE HEIGHT: it is measured at the intersection between the vertical plane passing through the axle
and the vehicle center line. Zero when reference plane is coincident with ground, positive change
when the car is raised.
• TOE: Zero when wheels are parallel, positive change when toe-out.
• CAMBER: Zero when wheels are vertical, positive change when the top of the wheel is outward
• CASTOR: Zero when steering axis is vertical, positive change when the contact patch is behind the
intersection of steering axis and ground.
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