What are the mechanical differences between the two configurations?
The steering rack-and-pinions are different: the Roadcourse R&P has a higher rate for quicker turning than its Oval counterpart. The Roadcourse also requires a differential type rear-end to allow the outer wheel to travel faster than the inner around the tight Roadcourse turns. For the Ovals, the car has a “spool” rear-end which is essentially a simple posi-traction type lock-up device.
