Former US Formula 1 rider Dan Gurney, who later formed an Indy Car team, had 1971's idea during test drives to attach a spoiler lip to the rear wing of his All American Racing Team's Indy Car racer. These are small flaps at the end of an aerodynamic profile. Mostly, these flaps are in the 90 degree angle to the profile, so that as much contact pressure as possible can be generated with only a minimal increase in air resistance. Thus, the Gurney flaps are located at the top of the rear wing. Gurney wanted to patent this invention, but failed because a similar principle was already filed in the year 1931, 10 days before Gurney's birth, by the designer EF Zaparka, for a patent.
Gurney flaps come from racing
Today, the Gurney Flap from the Formula 1 is indispensable, and already series vehicles such as the Porsche Cayman GT4 or the Porsche 911 GT2 RS have this type of air baffles. Of course, such Flaps are also available as a tuning accessory, but tuning fans need to know that increases on the road, the air resistance, and thus the aerodynamics of the car a little worse, as more contact pressure is generated. But not only sports cars, but also less sporty models such as the new Chevrolet models Onix and Monza, which are equipped with a 1-liter three-cylinder (Onix) and a 1,3-liter three-cylinder (Monza), which 125 respectively 156 PS makes, own in the Redline variant a small flap on the trunk lid, which should suggest more sportiness, but purely for show purposes.
Benefits of a Gurney Flap:
- Higher contact pressure makes the car safer on the road at high speeds.
- The lateral wind sensitivity of a vehicle decreases drastically.
- A Gurney Flap is a relatively cheap tuning option for a car.
- When reselling so a flap can also easily dismantle.
- Suitable for almost everyone roof spoiler, rear spoiler or also for them Roof edge.
Disadvantages of a Gurney Flap:
- Due to the higher air resistance, the consumption during normal driving increases minimally.
- A retrofitted gurney flap looks a bit like a craft shop.
Of course that had not happened yet!
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