Demo derby steering column

Introduction to demo derby steering columns

The steering column in a demolition derby vehicle is a critical component, directly impacting driver safety and vehicle control. Unlike standard road vehicles, demo derby cars undergo significant modifications to withstand brutal impacts. Understanding how to modify and reinforce the steering column is essential for both survival and competitive performance.

This article will delve into the various aspects of demo derby steering columns, including common modifications, safety considerations, and performance enhancements. From strengthening techniques to selecting the right materials, this guide provides valuable insights for both novice and experienced derby drivers.

Common steering column modifications

The stock steering column of a car is typically designed for passenger comfort and standard driving conditions. In demolition derby, however, these columns are vulnerable to bending, breaking, or being pushed into the driver's compartment during a collision. Therefore, several modifications are commonly performed:

• Reinforcement: Welding additional steel plates or tubing around the steering column to increase its strength and prevent it from collapsing during impacts. This is a fundamental modification.
• Shortening: Cutting the steering column to reduce its length and minimize the chance of it intruding into the driver's space. This also often involves a custom steering wheel setup.
• Bracing: Adding a support brace from the steering column to the dashboard or roll cage to further enhance rigidity. This prevents the column from flexing excessively under stress.
• Quick-Release Steering Wheel: Installing a quick-release steering wheel is not directly a steering column modification, but it's crucial for driver safety. This allows the driver to quickly remove the steering wheel in case of entrapment.

Safety considerations for demo derby steering columns

Safety should always be the top priority. When modifying your demo derby steering column, consider these critical safety measures:

• Welding Quality: Use high-quality welds with proper penetration. Poor welds can fail under stress, compromising the column's integrity. Always have a certified welder do the work if you are not experienced.
• Material Selection: Utilize strong, durable materials such as mild steel. Avoid using materials that may shatter or break under impact.
• Padding: Padding the steering column with energy-absorbing materials helps to mitigate the impact forces on the driver during a collision. This includes padding the area around the column.
• Inspection: Regularly inspect the steering column and its modifications for any signs of damage, such as cracks or bending. Repair or replace damaged components immediately.
• Driver Positioning: Ensure proper driver positioning to maintain a safe distance from the steering wheel and column. A well-positioned driver significantly reduces the risk of injury during a crash.

Performance enhancements related to steering columns

Beyond safety, steering column modifications can also influence a car's performance in a demo derby. Although the main objective is survival, a well-modified steering system can provide better control and handling:

• Steering Ratio: While not directly related to the column itself, consider the steering ratio. A quicker steering ratio can provide more responsive handling.
• Steering Wheel Size: The size of the steering wheel impacts leverage. A smaller wheel can offer more precise control, while a larger wheel might provide more leverage for maneuvering.
• Steering Linkage: Inspect and reinforce the steering linkage components that connect to the steering column. This ensures the steering system remains robust under heavy use.
• Proper Alignment: Proper alignment is crucial for optimal handling. Check and adjust the alignment after making any steering system modifications.

Step-by-step guide to reinforcing a steering column

Here is a general guide, but always consult with experienced derby drivers and adhere to your specific derby's rules:

1. Remove the Steering Column: Disconnect all wiring and linkages, then remove the steering column from the vehicle.
2. Prepare the Column: Clean the column to remove rust, dirt, and grease. This will ensure good welds.
3. Cut and Fit Reinforcement Plates: Measure and cut steel plates or tubing to fit around the existing column. Ensure they are snug.
4. Weld the Reinforcement: Weld the plates or tubing securely to the column. Use high-quality welds.
5. Reinstall the Column: Reinstall the reinforced column back into the vehicle, making sure all connections are secure.
6. Add Padding: Pad the column for added safety.

Remember, always consult the rules of the specific demo derby you are entering. Rules vary from track to track.