Power System (Supercharger & Electric Motor)
At 7:48 in
Dale Earnhardt Inc's Secret Weapon of Restrictor Plate Domination: The "Wind Tunnel Engine"
What happens here
The heart of the system involved a Paxton supercharger, powered by a 20-horsepower electric motor (requiring the shop to be rewired to 440V). The supercharger was necessary to move enough air through the system to simulate race conditions, and its integration with the electric motor presented significant challenges, particularly in preventing belt slippage. The custom fabrication included specific boxes and splitters to direct the air flow from the carburetor through the supercharger and then out through custom exhaust pipes, simulating the entire engine's air path.
Goal: Integrate a high-power supercharger and electric motor to generate and control the necessary airflow for simulated race conditions.
Tools and materials
- 20 Horsepower Electric Motor — Powering the supercharger
- 3-inch hose — Connecting parts of the air path
- Custom exhaust pipes — Simulating engine exhaust
- Custom metal boxes/splitters — Directing air flow
- Drive belts — Connecting the motor to the supercharger
- Electrical wiring — Powering the high-voltage motor
- Paxton Supercharger Paxton — Compressing air to simulate race conditions
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