The formula to calculate the scrub radius is:
\[ SR = SH - WO \]
Where:
The scrub radius is an important aspect of a vehicle’s steering geometry. It affects the steering feel, handling, and tire wear. A positive scrub radius occurs when the suspension hub centerline is outside of the wheel’s contact patch, while a negative scrub radius occurs when it is inside. Zero scrub radius is when the two points coincide. Each type has its own handling characteristics and is chosen based on the desired performance of the vehicle.
Consider an example where:
Using the formula to calculate the Scrub Radius:
\[ SR = 150 - 50 = 100 \text{ mm} \]
This means that the scrub radius for this example is approximately 100 mm.
