• Ride Height, Impact Attenuator, Impact Structure Heights

• Use Eyes For Harness Clips

• EV Rear Diagonal Requirement

• Get External Items off the Main Hoop and Main Hoop Braces

• High temperature knockdowns for composite and structurally bonded accumulators

• LV Batteries and Pressurized Cylinders must be inside the chassis

• No engine mounts on the Shoulder Harness Bar or Braces

• Maximum static ride height should be <= 75mm

• Comparing and engineering for different materials

• Strength, stiffness, triangulation, load paths, gussets

• Suspension loading

• EV Accumulator mounts

• Bearing Style Selection

• Misalignment Limits

• Installation

• Steering Rack Protection

• HV Side Minimum Height

• Half-Monocoque Attachment

• Monocoque Details

In addition to a torsion test, local and whole-chassis FEA can show performance for different chassis designs during combined cornering, aero and bump loads, for drivetrain attachments during acceleration and braking, and for harness and other mounts during front impact.

• Standard Honeycomb IA

• FH Angle and Head Restraint Protection

• Tougher Monocoque Modulus and Harness

• Max 2 Accumulator Attachments Per Tube

• And more…

To manage priorities, ask four questions about every design decision, in this order: 1. Is it legal or illegal? 2. How does the change affect reliability or repeatability? 3. How does the change affect overall vehicle performance over a lap? 4. What are the drivability effects?

The most common barrier between your team and your performance goals is reliability. These design best practices are intended to help you create strong, stiff, and light mechanical designs. Every design requires tradeoffs, and this list is not intended to be a set of absolute rules; but it will help you identify common design strategies to follow, pitfalls to avoid, and will inform your design decision making.

Crash safety considerations beyond the frame and impact attenuator.

Chassis, mass, and aerodynamic interactions affecting steady-state balance, and the purpose of anti-roll bars.