1985 Lotus Esprit Turbo Frame And Body, Rolling Chassis. on 2040-cars

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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:

Lotus Type 133 sedan caught testing in China

Before the Lotus Eletre battery-electric SUV debuted in March, Chinese car spotters snapped photos of prototypes in testing. The same has happened again with the Lotus codenamed Type 133. An image of the tester parked along a curb showed up on the Chinese site Weibo, with a camouflaged Eletre in the background left and an uncamouflaged Eletre parked opposite. The Type 133 is a four-door sedan being developed as a driver's car, benchmarked against and planning to take on the Porsche Taycan as well as the Audi E-Tron GT. Slated for a reveal next year, recent Lotus trademark applications for the names Envya and Etude lead watchers to believe the Type 133 will adopt one of those monikers for its debut in March, Envya getting the short odds. Lotus SVP of design Peter Horbury said the 133 wouldn't be just a smaller Eletre, we'll need to wait until the covers come off to know the truth of it. What we can tell for now is that the sedan doesn't look far off the kind of four-door we'd have expected from Lotus if the English maker had got into family sedans before the electric age. Peeking through the window, the driver's area gives off the same vibes as in the Eletre thanks to a squared steering wheel and minimalist instrument panel. An earlier spy shot picked up by Car News China shows a rear door with pillarless window. The biggest surprise is how long it looks. Some of that length could be a trick of the angle and the camera lens; even so, this won't be a wallflower. And why should it be? Said to sit on the same Electric Premium Architecture (EPA) as the Eletre — a derivative of parent company Geely's Sustainable Experience Architecture (SEA) that supports the Polestar 4 and the new Smart range — we expect overlap in powertrain possibilities. That could mean an entry-level battery pack of 92 kilowatt-hours juicing a dual-motor drivetrain with 595 horsepower and 524 pound-feet of torque, and a 120-kWh pack powering four motors producing 893 hp and 727 lb-ft. That latter model should get the Type 133 from standstill to 62 miles per hour in under 3 seconds. After the sedan debuts, the Type 134 SUV isn't anticipated until 2025, a challenger to the Porsche Macan EV. The following year, Lotus returns to its roots with the Type 135 sports car that will usher the current Emira into retirement. Related video:

Listen to the Lotus Evora 400 make lovely noises

Automakers roll out loads of video content these days, but they often do so much editing and add so much background music that you miss out on the best stuff. With this video, Lotus shows they know what's important. This video shows Lotus's Evora 400 spending some time out on their test track in Hethel. The video is quite short and consists mostly of some onboard footage, but Lotus clearly invested in the sound recording. This Evora's 400 horsepower, supercharged V6 sounds brilliant as it screams around the course. We'll be getting a version of this car in the States this year. Lotus intends on selling the fittingly named Evora Sport 410 (for its 400 horse output) in America. It's possible we may see a lower-end model as well without the supercharger or with a smaller engine. No matter what though, great-sounding Lotuses are in our future. Related Video: Image Credit: Lotus Lotus Coupe Performance Videos engine