2011 Lotus Elise R on 2040-cars

Auto blog

Lotus Evora GX to race in U.S. Grand-Am series

The Lotus Evora has taken many forms as a race car over the past few years, starting in 2009 with the Type 124 Endurance Racer built for the FIA GT. Since then, Lotus has developed a GT4 Cup version designed for a one-make series, the Evora GTE that currently competes in the GT class of the ALMS and the recently introduced Evora GTC.
Now, Lotus has released the Evora GX, a variation of the GTC tweaked to specifically meet the requirements of Grand-Am's new GX class that will launch at the start of the 2013 race season. While the two cars are very similar, using the same lightweight carbon fiber and plexiglass bodywork, the GX version gets a thicker U.S.-spec roll cage, a revised front splitter and bumper, a standard Grand-Am rear wing, yellow headlights and a new fuel filler system. ABS and traction control have also been removed per Grand-Am regulations.
Pricing for the Evora GX is listed at $335,000 with each one built to order, and one customer has already taken the plunge. McMahon Raceworks has placed an order and should have the car on the starting grid at the first race next year.

Lotus hits the track with new Elise S Cup R

If you want to take a Lotus to the track but the Exige V6 Cup is a bit too much to handle, the boys from Hethel have a new offering that may be of interest.
The new Elise S Cup R features all the track-tuned bells and whistles of its six-cylinder brethren, including a competition-spec aero kit, adjustable suspension, Yokohama racing slicks on 17-inch forged alloys, tow hooks, remapped ECU, cross-drilled and ventilated disc brakes and an interior with a HANS-compatible bucket seat, six-point racing harness and quick-release steering wheel. But instead of a heavier and more powerful V6, the Elise S Cup R "adds lightness" with the same 1.8-liter supercharged inline-four with 217 horsepower and 181 pound-feet of torque as the road-going Elise S. Yet with all that track-tuned gear, it's a good four seconds per three-mile lap faster than the showroom stock version in the automaker's testing.
Interested parties can pick one up in the UK for £39,125 (before taxes, equivalent to about $63k) and either lap it to their hearts' content at private track days or enter it in one of the dozen Lotus Cup series operating around the world. Lotus only released this one photo (click above to enlarge), but you can check out the full specs in the press release below.

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: