The Iron Duke Resource Site


Polar Moment of Inertia
Cornering Power
Road Hugging Weight
Vehicle Dynamics 101
Vehicle Dynamics 102
The Factory Fiero
Budget Street Handling
Herb Adams VSE
Autocross Quad 4 racer
Budget Wheels
Bump Steer

Welcome to my newly redesigned Fiero 2M4 resource site.  The original site recorded over 12000 visits,  hopefully this one will also prove as useful.
Ira Crummey

The Mid-Engine Experience :

The Pontiac Fiero was the only mid engined design to see volume production by a major American automaker, as such it is the most affordable car available in this layout.  The low Polar Moment of Inertia afforded by this design has resulted in a car well suited for nimble handling, although the factory setup may need some help.

The basic theories of vehicle dynamics (handling) are often a mystery due to the complex scientific principles involved.  Understeer, oversteer, neutral, these terms are used to describe the cornering behaviour of an automobile.   Here I will attempt to clarify these terms and show how they apply to the Fiero.

Ira Crummey


Polar Moment of Inertia

Cornering Power (Lateral Acceleration)
Road Hugging Weight: The Myth
Vehicle Dynamics 101
Vehicle Dynamics 102
The Factory Suspension Setup
Budget "Street" Handling
Herb Adams VSE on Fiero Handling
George Ryan's Quad 4 Autocross Racer
Wheels that Fit: the Budget Alternative
The Truth about Bumpsteer!

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