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Lotus confirms new Elise S Cup

Head on over to the Lotus website, and though the Elise isn't offered in the United States anymore, buyers in other markets can choose between numerous models: there's the base Elise, the Elise Club Racer, the Elise S and the Elise S Club Racer, and that's before even getting into the even more extreme Exige that's also based on the Elise. Track-day enthusiasts can also go for the full-on Elise S Cup R, but now the British sportscar manufacturer has confirmed a new variant.
Called the Elise S Cup, it slots in between the CR and the Cup R as an extreme performance model that can actually be driven to the track and back home on public roads. The S designation tells us it packs the 1.8-liter supercharged four that already produces 217 horsepower and 184 pound-feet of torque in the existing Elise S, Elise S CR and Elise S Cup R, but as we saw when Lotus was testing the new variant around the Nürburgring, the Elise S Cup packs some key upgrades.
It's got an aero kit - including front splitter, winglets, side skirts, rear diffuser and rear wing - that's more aggressive than other road-going models (though apparently less extreme than the track-focused S Cup R), helping to generate 145 lbs of downforce at 100 mph and 275 lbs at top speed and besting the Elise S around the Lotus test track by an impressive three seconds.

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:

eBay Find of the Day: 2000 Lotus 340R, claimed only street-legal example in US

These days most of the news out of Lotus comes when it releases a lighter or faster version of the Elise, Exige or Evora. However, the stripped-out, Elise-based 340R might already show the logical conclusion of that concept, despite coming out in 2000. Now, one of the 340 made is up for auction on eBay Motors, and the seller in Fort Lauderdale, FL, claims that it's the only street-legal example available in the US.
Lotus founder Colin Chapman always had an obsession with making his vehicles as light as possible, and the 340R adhered to that adage about as closely as a street car could in 2000. These minimalist roadsters eschewed opening doors, windows and a roof in the pursuit of cutting the fat off the brand's hardly portly Elise. The company's engineers also trimmed away the fenders to give their creation a semi-open wheel design that looked as wild when new as today. For the interior, they installed two racing buckets, and the most of the rest was left in bare metal, including the pedals. All of the changes reportedly brought the 340R down to around 1,545 pounds.
Power comes from a 1.8-liter four-cylinder with a five-speed manual gearbox. The 340R is available with 177 horsepower or a tuned 187-hp version from that mill, but the seller doesn't specify which one this is. It's still a pretty fresh car, though, with just 3,577 miles claimed on the odometer.