Vehicle Stability & Weight Distribution #
To ensure your vehicle remains stable under high lateral loads—especially during tight cornering—adhere to the following center of gravity (CG) and weight distribution standards:
1. Vertical Center of Gravity #
Maintain a low Center of Gravity. Ideally, the CG should be located below the axles. This minimizes the “lever arm” effect that causes body roll and potential tipping during high-speed maneuvers.
2. Longitudinal Weight Distribution #
-
Centralization: Keep heavy components (batteries, motor, driver) centered between the wheels. This reduces the polar moment of inertia, making the vehicle less likely to spin out if traction is lost.
-
Forward Bias: Aim for a slight forward weight bias. This increases “tracking” stability and ensures the front tires have sufficient grip for steering authority.
3. Lateral Balance #
Weight should be distributed equally across the left and right sides of the vehicle to ensure consistent handling in both left and right-hand turns.
Comparison: Stable vs. Unstable Setup #
| Feature | Optimal Setup (Stable) | Risk Setup (Unstable) |
| CG Height | Below axle line | Above axle line |
| Weight Bias | Slight Forward (approx. 55/45) | Heavy Rear Bias |
| Component Placement | Inboard / Between axles | Overhanging the axles |
Pro Tip: When mounting batteries—often the heaviest component—place them as low as possible in the chassis to drastically improve your cornering ceiling.
