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Lotus Elise S2 2-Eleven
April 2007 - Production
The car weighs 745kg when ready to drive and has 252 bhp from its supercharged and intercooled 1796 cc engine. The engine has an 8,000rpm red-line and uses a Roots-type Eaton M62 supercharger (with a sealed-for-life internal mechanism so that it doesn't use the engine's oil), run from the crankshaft and has an integral bypass valve for part load operation. Four high capacity injectors and an uprated fuel pump add additional fuel under hard acceleration or high speed driving. An Accusump is included, along with Twin oil coolers.
A sports-type clutch plate and heavy duty clutch cover transfer the engine power and torque to the lightweight aluminium C64 six-speed gearbox (with an aluminium casing) - using the same spaced ratios as the Exige S. An open type differential is fitted as standard. The Lotus switchable Traction Control System (LTCS) works through the engine, reducing power to maintain traction; it is active above five mph and reacts more quickly than many brake-based systems apparemtly.
The 2-Eleven uses a high-sided variant of the Elise's chassis structure featuring epoxy bonded aluminium alloy extrusions with modified Exige S based running gear. This results in a strong and stiff package. A glass fibre reinforced composite front crash structure and an FIA compliant six-point rollover structure with integral harness mounts and lightweight galvanised steel rear subframe, provide further safety.
The bodywork features a new light-weight composite bodywork weighing 40Kg and using core-mat technology. All external panels are bolted on for ease of removal, maintenance and repair. The wheels are five-spoke light-weight forged black alloy wheels (front 7Jx16, rear 8J x 17), with Yokohama A048 R LTS tyres (front 195/50 R16, rear 225/45 R17). The brake system includes 288 mm cast iron cross drilled and ventilated discs, upgraded Pagid RS14 sports brake pads set into the brake calipers (aluminium alloy AP Racing 2-piston at the front and Brembo single sliding piston at the rear), high grade silicone brake fluid and stainless steel braided hoses. In addition, Lotus own track-tuned servo-assisted four-channel ABS system is claimed to enhance braking performance and minimise stopping distance.
Performance is estimated at 0-60mph in 3.8 seconds and 0-100mph in 9.1 seconds. Top speed is 155mph.
January 2007 - DevelopmentThis was originally proposed as the circuit car but made it into limited production as the Lotus 2-Eleven.
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Copyright © Rob Collingridge 2009 - Last updated 06 Sep 2007