Roof flaps are two plates located on the roof which measure 12x8 inches 30x20 cm and are depolyed as the car is either sideways.
Race car roof flaps.
Following rusty wallace s crashes at daytona and talladega penske racing designed the original roof flaps.
Ultimately a roof flap system was produced that has significantly reduced extreme yaw lift in race cars.
The flaps are stowed during normal vehicle operation.
The proof of success of this system has been the virtual elimination of aero lift off in nascar race cars since the introduction of roof flaps when coupled with previously mandated anti lift devices in february 1994.
In 1994 nascar introduced roof flaps a safety device designed to keep cars from going airborne and tumbling over the track.
In 1994 nascar introduced roof flaps to the car which is designed to keep cars from getting airborne and possibly flipping down the track.
Thus after development by roush racing the roof flaps were born.