Purpose Of A Roof Scoop

The main reason for having a roof scoop on a rally car is to actually pressurise the interior of the car slightly. This is because there s a negative pressure created by the vacuum bubble behind the trunk. Hood scoops are for cooling the engine or engine components.

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I have no idea what good a roof scoop could do.

Purpose of a roof scoop.

If the car was a rear engined air cooled engine car like an old vw bug it could be used to force cooling air over the motor. In almost every case a large naca duct will provide more than sufficient airflow without increasing drag raising the boundary air thickness or causing turbulent airflow. On a rally race car a small roof scoop creates positive pressure in the cabin pushing dust out of window. What are roof scoops for.

Any dust floating around the cabin will seriously inpeed the driver s vision and make it much harder for the co d. Getting back to aerodynamics today i explain how hood scoops and bonnet vents work for road and track. You ve probably noticed that if your car windows are open fresh air gets sucked in. The only other reasons for a roof scoop are to cool rear mounted heat exchangers radiators or to provide intake air for a rear or mid mounted engine.

It cools off an appropriate spot when you start to get hot headed. This small increase in pressure works wonders to keep out dust and sand from the rally stage. Anyone has idea. Also on mid engined cars the roof scoop is the air intake.

I explain the basics of how the airflow works around.

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