Pro Racing Motor and Chassis Timeline
By Steve Okeefe
(with a little help from his friends)
This update, the first in several years, generally adds greater detail and clarity in the 1970 to 1973 time frame.
Changes include an attempt to more accurately depict when the C-can motor first arrived on the scene.
Additions include new tags indicating general trends in chassis design (lighter vs. heavier and shorter vs. longer), design improvements to further isolate front wheel function, the advent of NCC car and motor classification, and increasing design dependence on aerodynamic down-force.