Common Radio-Control Car Terms Explained #1 (Part 1)

Here are some of the common terms explained for RC cars. These terms and abbreviations are commonly used by experts, manufacturers, message board users, old professionals, racers, club members etc.

Ackerman refers to the angle between the two front (steering) wheels when turned to full lock. Altering this ‘ackerman angle’ will alter the steering characteristics. A greater angle will give you smooth, predictable steering, whilst a smaller angle will give you more aggressive steering.
The angle for the rear whish bone hinge-pins relative to the horizontal refers to the term “Anti-Squat”. Increasing the angle gives more anti-squat, meaning that the car is less likely to squat (drop at the rear) during acceleration.

Wheelbase is the distance between the front and rear axles of the car. The angle of the wheels (when looked at from the front or rear of the car) relative to the vertical is known as Camber. If the wheels lean inwards towards the car, the angle is said to be negative. If they lean out the angle is positive, however, positive camber is almost never used. Basically, zero camber gives the maximum forward traction, whilst more negative camber gives more grip while cornering. Caster describes the angle (when looking at the front wheels from the side of the car) between the kingpin and the vertical. This is part of the car’s geometry which keeps it travelling in a straight line when no steering force is applied. It is not adjustable on all cars.

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