EV 2022 Mechanical Overview

Summary

The 'Purple Haze' vehicle is a high-performance machine designed for competitive use, featuring a custom suspension system, powerful drivetrain, and advanced cooling mechanisms. Key components include a pull-rod suspension, 10-inch Hoosier slick tires, a motor-driven chain to differential powertrain, and precise rear-wheel alignment via a tow rod. The car also incorporates a robust safety system to protect operators from moving parts, sharp edges, and operational hazards. Its innovative design ensures optimal performance while maintaining structural integrity and safety during high-speed events.

Takeaways

• 😀 The nose cone is a crucial part of the vehicle, designed to protect the cockpit area during competition, ensuring it remains intact even in the event of a collision.
• 😀 The suspension system features a pull rod design, which connects the top of the control arm to a small rocker that translates the upward wheel motion to the shock absorber.
• 😀 Custom-made upright and hub components ensure proper mounting and integration of the wheels with the suspension system, keeping the wheels securely attached to the vehicle.
• 😀 The steering system includes a dashboard that provides telemetry, and the custom steering wheel connects to a rack that turns the front wheels.
• 😀 Power is transferred from the motor to the differential via a chain, which then distributes power to the wheels, driving the car.
• 😀 A tow rod is used at the rear of the car to ensure that the rear wheels stay straight and centered, preventing unwanted movement during driving.
• 😀 The vehicle is equipped with a cooling system to regulate the temperature of both the motor and inverter, ensuring optimal performance during operation.
• 😀 It is important to avoid touching moving parts like the motor, chain, and differential, especially when the vehicle is in motion or powered on.
• 😀 Safety is a priority when moving or working on the car; care should be taken around sharp edges, such as carbon fiber components and zip ties.
• 😀 When lifting the vehicle, always ensure you are holding onto solid components like the frame or control arms, avoiding fragile or bolted parts.

Q & A

What is the function of the nose cone in the vehicle?

The nose cone serves to enclose the cockpit area for competition purposes and is designed to be strong enough to withstand impacts without breaking off.

What role do the control arms play in the vehicle’s suspension system?

Control arms connect the wheels to the frame of the vehicle. They don't directly support the weight of the car but ensure the wheels remain securely attached to the chassis.

How does the suspension system function in the vehicle?

The suspension system uses a pull-rod design, where a rod connects the control arm to a small rocker at the bottom. This transfers the upward motion from the wheels to the shock absorbers, helping maintain ground clearance.

What type of tires is used on the vehicle, and in what conditions?

The vehicle uses 10-inch Hoosier slick tires, primarily in dry conditions, for optimal grip and performance.

What is the purpose of the custom upright hand hub?

The custom upright hand hub connects the wheels to the control arms, ensuring proper mounting and providing attachment points for the steering links and brake rotors.

How does the vehicle’s steering system work?

The steering system includes a custom steering wheel and a linkage that connects to a steering rack. Turning the wheel to the left or right moves the front wheels accordingly, allowing the driver to control the car’s direction.

How is power transferred from the motor to the wheels?

Power from the motor is transferred via a chain that drives the differential. The differential then distributes power to the wheels through drive shafts.

What is the role of the tow rod in the rear suspension?

The tow rod ensures that the rear wheels remain aligned and straight, preventing any unwanted rear steer, which is not allowed in the competition.

What is the function of the cooling system in the vehicle?

The cooling system regulates the temperature of both the motor and inverter, ensuring they remain at optimal operating temperatures. It uses automotive hosing and a fan to circulate air and prevent overheating.

What are the key safety considerations when working with the vehicle?

Key safety considerations include avoiding moving parts like the motor chain and differential, standing clear of the car when it is in drive mode, being cautious of sharp edges on the vehicle, and always lifting or moving the car from solid frame points or control arms.