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This is how ground effects work in a nutshell

There are two ways to generate downforce. One is with all manner of wings and spoilers on the surface of the vehicle. The other is with ground effects. One you can clearly see, the other remains something of a hidden mystery. Fortunately, the good folks at Lotus and Goodwood are here to dumb it down for us non-engineer types. It's called Bernoulli's Principle, named after Swiss physicist Daniel Bernoulli who literally wrote the book on the subject way back in the 1700s. Countless engineers have spent their careers focused on its study and application, but the crux of the matter is that, as the speed of air (or other "fluid") increases, pressure decreases. Play with the air's increasing speed and decreasing pressure just right and you can generate downforce underneath the body of a car without significantly increasing drag as you would with surface spoilers. For evidence of how Bernoulli's Principle applies in practical terms, just look at the last Ferrari to pack a turbocharged V8 in the middle and the latest one. The F40 had a giant wing on the back, where the 488 GTB has none. But because the 488 uses underbody aerodynamics (or "ground effects"), it generates significantly more downforce than the winged F40 ever could, and at lower speeds. Ferrari, however, was not the first outfit to harness the power of ground effects. Lotus did with the legendary 79 that Mario Andretti drove to the world championship back in 1978. That was the genius of Colin Chapman, and to explain how it all works in layman's terms, our friends over at Goodwood Road & Racing brought in Colin's son Clive Chapman, head of Classic Team Lotus, to put together the video above. Related Video:

Forza Horizon 3 adds Ford Police Interceptor, Jeep CJ5

We're only a few weeks past the debut of Forza Horizon 3, and already the folks at Turn 10 are introducing the first of six car packs for the open-world driving game. Focused heavily on performance, there are still a few, um, oddballs, including one we're sure Forza's livery customizers will have a blast with. The Smoking Tire Car Pack brings seven new vehicles to FH3, with the Aston Martin Vulcan, Pagani Huayra BC, GTA Spano, Lotus 340R, and BMW M2 repping traditional performance vehicles. As per usual, FH3 renders each car beautifully and promises a solid approximation of real-world performance – even if you do ditch the roads and opt to rampage through the Australian countryside. While performance is good, the Ford Crown Victoria Police Interceptor and the Jeep CJ5 Renegade bring an off-beat vibe to this particular pack. We aren't certain, but this might be the first time the Police Interceptor appears in a blockbuster driving game. While we expect plenty of police car liveries for the Crown Vic, Forza's rabid community of tuners and customizers are sure to do much more with it. As for the CJ5, is there a better vehicle for tooling about Australia? Yeah, we didn't think so. The Smoking Tire Car Pack is available for free as part of the Forza Horizon 3 Ultimate Edition or Car Pass program. Commitment-phobes can also download this single vehicle pack for $7. Featured Gallery Forza Horizon 3: Smoking Tire Car Pack News Source: Turn 10 StudiosImage Credit: Turn 10 Studios Toys/Games Aston Martin BMW Ford Jeep Lotus turn 10 studios bmw m2 forza horizon ford crown victoria aston martin vulcan forza horizon 3 gta spano

Banned Lotus 88 F1 car explained by Colin Chapman's son

Racing teams are always looking for ways to gain speed through creative interpretations of the rule book, but speed-obsessed engineers were a little too clever with the twin-chassis design for the Lotus 88 Formula One car. Colin Chapman's son, Clive, gave Goodwood the racer's fascinating story and why the organizers banned it. Lotus' innovation with the 88 was a novel twin-chassis layout. The outer chassis supported the aerodynamic elements and the body, and the inner one held the driver, engine, and transmission. The separate pieces allowed the car to meet the rules in the pits, but the outer chassis would create a seal with the track at speed to preserve the ground effect downforce. The organizers decided this ingenious solution went contrary to the rules against side skirts, and they banned the 88. However, this Lotus was important for a second reason. The inner chassis was F1's first carbon fiber monocoque. The lightweight material is common in racing and performance cars today, but it was a cutting-edge innovation for 1981. Get the full story from Clive Chapman in this clip. Related Video: This content is hosted by a third party. To view it, please update your privacy preferences. Manage Settings.