Caterham 7 CSR
The Caterham Seven CSR is the latest model from sports car manufacturer Caterham Cars. The CSR is the most modified Caterham, though it still retains the basic look of the Super Seven; the CSR has two engine options based on the same Duratec block, though modifications and power output differ. The entry level engine produces 200 bhp, with a 0-60 mph time of 3.7 seconds. The upgraded engine produces 260 bhp, with a 0-60 mph time of 3.1 seconds and a top speed of 155 mph. The CSR represents the most radical redesign of the car since the introduction of the Seven in its 48-year history; the CSR is the subject of numerous improvements over previous models, though it still retains the main aesthetics of Caterhams. While heavier than other Caterhams the CSR still upholds Colin Chapman's philosophy of "add lightness." Weighing only 575 kg, the CSR has excellent handling, making it agile. On the skidpad, the Caterham outperforms many supercars, its 1.05 lateral g-force beats the 2007 Porsche 997 Turbo's 0.94 G, the Ferrari F50's 1.03 G, the Ferrari Enzo's 1.01 G.
In braking tests, the CSR performs well. From 70 mph to a complete stop, the CSR took 140 feet; the 997 Turbo, stopping from 60 mph took 99 feet. The Ferrari F50 performed well. For comparison, an average 2011 road car takes 167 feet to stop from 70 mph and Formula One cars can stop in 56 feet from 62 mph; the CSR has excellent low-end acceleration because of its high power-to-weight ratio of 410 bhp per ton. It can accelerate from a stop to 60 mph in 3.1 seconds, though during trials and Driver magazine could only achieve 3.6 seconds. This discrepancy is due to the close gear ratios of the rev limiter; the CSR that they tested could not reach 60 mph in first gear, required the extra 0.5 seconds to shift. Car and Driver explains: For comparison the Porsche 997 Turbo, which has AWD and weighs over twice as much as the CSR, has a power-to-weight ratio of only 269 bhp per ton, but has a 0-60 mph time of 3.4 seconds. The CSR, as with all Caterhams, has worse performance at higher speeds with respect to both acceleration and handling because of the poor aerodynamics.
Caterhams suffer not only from a high drag coefficient of 0.7, but from lift. Though there have been improvements in aerodynamics, the CSR still has 50 lb of lift at 100 mph; these factors hinder both high-end acceleration, top speed, handling. With such strong wind resistance, it requires much more power to overcome that force and increase top speed. Lift reduces contact force on the tires; the 260 bhp Cosworth-tuned engine is modified from the stock 2.3 litre Duratec. The cylinder head, crankshaft, connecting rods and pistons are upgraded by Cosworth. Cosworth integrates an advanced dry-sump with an extra internal scavenge pump to distribute the oil. While a dry-sump system requires more oil, a dry-sump will keep the engine lubricated under hard cornering unlike a wet-sump system. Cosworth radicalizes the cam shafts and upgrades the exhaust system; this may cause the engine to run a little more "rough" at low RPMs, but it drastically increases performance. The inlet system is replaced with an advanced, custom roller-barrel system.
This increases airflow at full throttle compared to a butterfly inlet. The engine has a custom chip designed by Cosworth for a further increase in performance; the 200 bhp model uses the same Duratec block, but is not as modified. The connecting rods and pistons are not upgraded though it does have the dry-sump system; the cam shafts are radicalized, the exhaust system is upgraded. The inlet system is enlarged, but not replaced with the roller-barrel system; the computer chip is upgraded, but not to the extent of the 260 model. Speaking, the 200 model is upgraded, albeit not as heavily; the CSR, has a variety of other features. There are no power brakes or power steering, making the CSR responsive and agile; the clutch engages high, allowing for quick shifts while racing. In addition, the flywheel is light; this makes heel-and-toeing quick and easy as the engine revs up quickly with little momentum. The overall strength of the chassis is improved with the addition of new tubular steel to the frame.
The weight of the car increases, but the torsional stiffness is improved by somewhere between 25% and 100%. The added reinforcement was necessary in order for the CSR to support the heavy 2.3 litre Duratec engine. The CSR is wider than previous models, which increases handling ability. Both rear and front suspension were redesigned for the CSR; the front suspension has double wishbone adjustable, inboard springs and dampers, improving aerodynamics. The rear suspension is upgraded to a double wishbone independent system, replacing the De Dion tube design. Caterhams have poor aerodynamics due to the blunt windscreen, open-wheel design, open cockpit. At high speeds, lift becomes a problem. To combat this, the CSR has several features that reduce lift by 50%; the front cycle wings are fitted closer to the tires to reduce turbulence. In addition, they creates a small amount of down force; the new front suspension scheme reduces turbulence and drag caused by the spring and damper units. The biggest enhancement is
Elfin Type 3 Clubman
The Elfin Type 3 Clubman is a clubman-style automobile, produced by Elfin Sports Cars in Australia from 1998 to 2007. It was produced in turnkey variants; the rear end components were sourced from the Ford Escort Mark II
The original Stalker V6 Clubman, produced in 2001 by Brunton Automotive is a kit car replica of a Lotus Seven. The drivetrain is based on components from the Chevrolet S-10 two-wheel drive pickup truck as sold in the United States and Canada from the mid-1980s through the early 1990s. Older Stalker used the 2.8 or 3.4 l 60° V6 engine out of a mid-1990s Chevrolet Camaro or Pontiac Firebird. Most Stalkers now use the GM 3800 series II or III V6, in both aspirated and supercharged forms; the supercharged version is known as a Super Stalker. Stalkers trophied at the SCCA SOLO NATIONALS 2007, N. A. S. A. Time Trial Nationals at Mid Ohio and Gun Pro Class Top Dog 2007, Street Tire Top Dog at Gateway International Raceway. A Stalker holds the Time Trial Unlimited Track Record at Homestead-Miami Speedway in Florida, with a time of 1:32.8 seconds. In July 2010, after a change in company ownership from Dennis Brunton to Scott Minehart, Brunton Auto began to redesign the Stalker and in 2012, introduced the new version called the Stalker M-Spec.
Redesigned elements included the following: the Chevrolet S-10 components were eliminated, in favor of double wishbone suspension, which makes the M-spec one of the few Lotus Seven kit car replicas with independent suspension in both front & rear. Single adjustable shocks are mounted inboard and connect to the suspension arms using pushrods and rockers, similar to a Formula 1 car's suspension design; the M-Spec model and its variants were designed to accommodate specific GM V6 & V8 engines, allows both Manual & Automatic transmission options. M-Spec models are offered in different sizes and body styles: The original M-Spec body differs from the traditional Lotus Seven shape with its hood scoop, integrated LED headlight housings, one piece rear bodywork where the fenders are integrated with the rest of the rear bodywork; the Classic R model uses the M-Spec chassis but retains a more traditional Lotus Seven appearance to the body. The XL model of the M-Spec chassis is longer & wider than the original M-Spec, which allows for more room in both the engine bay and passenger compartment.
The AXR model, introduced in late 2014, is a purpose built autocross track car and is smaller than the original M-Spec. Brunton Auto is located in St. Petersburg and has produced 200 kits thus far. To assist buyers of their kit, Brunton Auto has created & maintains many different online build videos and written guides, as well as an email group to connect the Stalker community together. Brunton Auto must grant access to either of these resources. Manufacturers web site
Elfin MS8 Clubman
The Elfin MS8 Clubman is a sports car, successor to the Elfin MS7, a Repco-Holden V8 powered Group A Sports Car which won the 1975 Australian Sports Car Championship and the 1976 Australian Tourist Trophy. Sales started in July 2006 with the Streamliner selling for $119,990 and the Clubman for $98,990. Production will be 100 per year between the two models. UK sales began in April 2007, with importing handled by Walkinshaw Performance; the Elfin MS8 Clubman model has been designed by Elfin Sports Cars and styled by the Holden Design team when Mike Simcoe was Styling Director. The cars were revealed at the 2004 Melbourne International Motor Show; the Clubman comes in three specifications: Sportster and Racer. All are open wheeled configuration; the Sportster is a road registered entry level model with small aeroscreen. The Roadster adds to the Sportster model a full windscreen, removable door panels and two-piece tonneau and the Racer model is a single seat racer for track only. Top speed 275 km/h standing 400 m - 12.5 s 0 - 100 km/h in 4.4 seconds 5.7 litre alloy Generation III V8 OHV 16 valves From 329 hp 6 speed gearbox Limited Slip Differential Traction control system ABS braking system Cruise control Fully independent rear suspension with top and bottom wishbones plus toe link adjustment Front suspension with top and bottom chrome moly, aerofoil wishbones Fully adjustable race spec rose joints throughout Elfin alloy uprights adjustable for camber, caster & toe Coil over Koni shock absorbers, adjustable for bump and ride height Slotted & ventilated 4 wheel disc brakes Front: 32 x 343 mm discs Elfin alloy billet machined 6 pot calipers Rear: 18 x 315 mm discs with handbrake Elfin alloy billet machined 4 pot calipers Rack and pinion with adjustable steering column Fully adjustable alloy pedal box with brake bias adjustment Alloy 18" wheels 235 x 40 tyres Jig assembled, hand crafted multitubular space frame GRP body panels Length 3,200 mm Front Track 1,460 mm Width 1,700 mm Rear Track 1,430 mm Wheelbase 2,290 mm Kerb Weight 925 kg Official Site Video of Elfin Clubman and Streamliner MS8s
Irmscher Automobilbau GmbH & Co. KG is a German car tuning and manufacturing company, specialising in Opel and Kia vehicles as well as working for the complete automotive industry as an engineering service provider, it was founded in 1968 in a double garage in the Swabian town of Winnenden by rally driver and mechanic Günther Irmscher. Irmscher has retained close links to the Opel company by operating the factory team in many European and German automobile competitions, including the Ascona B i400 rally car, the Vectra touring car, the Astra DTM car and the Omega V8Star Series car; this has led them to design and manufacture parts for Chevrolet, the Cadillac CTS and wheels for the GM based SAAB models, although these are much rarer than the Opel parts. Their distinctive customised parts include alloy wheels and exhausts as well as various interior fittings. Since 1993, Irmscher has been building their own replica of the Lotus Seven; the vehicle bore the model name Seventy Seven. Towards its latter years it was known as the Irmscher 7.
Power comes from Opel-sourced four-cylinder units. Choices include: 115 hp or 150 hp. In 1989, Irmscher introduced the Irmscher GT, equipped with a 3.6L I-6 engine and marketed it as a 2+2 seater sports coupe. In 2002, the company presented the Inspiro concept at the Geneva Motor Show; the roadster was fitted with a fettled X30XE 3.0L V6 from the Opel Omega B. In 2008, commemorating Irmscher's 40th anniversary, the Opel GT/Saturn Sky based GT i40 was introduced with a 6.0L V8 engine. In 2011, a purely electrically operated variant of the Irmscher Roadster named Irmscher 7 Selectra was presented at the Geneva Motor Show. Official Irmscher website
Mitsuoka Motors is a small Japanese automobile company. It is noted for building unique cars with unconventional styling, of which some imitate British vehicles of the 1950s and 1960s, it is a coachbuilder, taking production cars, like the Nissan March, replacing various aspects of the bodywork with its own custom designs. It has produced a sports car, the Orochi. Mitsuoka Motors is the principal distributor of retro-classic TD2000 roadster in Japan. Mitsuoka was recognised in 1996 as the 10th Japanese auto manufacturer to be registered in Japan since Honda in 1963, it bases its current cars on other Japanese car manufacturers. Mitsuoka Motor launched in the UK in 2015 under sole distribution of T W White & Sons and launched the Mitsuoka Roadster at the London Motor Show in 2016. Rockstar 1996-present Galue 2008-present Himiko 2014-present Ryugi 1993-present Viewt 2010-present Like-T3 2018-present Rock Star 1982 BUBU 50 Series 1989-1990 BUBU 356 Speedstar 1987 BUBU Classic SSK 2008-2012 Galue 204 2010-2012 Galue Classic 1991 Dore 1990, 2000 Le-Seyde 2010-2012 Like 1998-2007 Mitsuoka Microcar 1998-2007 Microcar K-1/MC-1 1999-2007 MC-1T 1998-?
Microcar K-2 2005-? Microcar K-3/Type F 2006-? Microcar K-4/Type R 1999-2007 ME-1 2002-2007 ME-2 2004-2012 Nouera 2007-2014 Orochi 1996-2004 Ray 1998-2004 Ryoga a "classically" styled sedan based on the Primera and on the smaller Sunny 1996-2000 Type F 2000-2001 Yuga 1994-2000 Zero1 Mitsuoka Motors Japanese website Mitsuoka Motors UK website Mitsuoka Motors global website
The Dax Rush is a lightweight two-seater sports car. It is offered as a kit, is a popular choice among Kit Car builders, it has a multi-tube triangulated steel space frame chassis, front engine and rear wheel or four wheel drive. The body is constructed in Glass-Reinforced Polymer with bonnet, it complies with the Single Vehicle Approval scheme. Two optional rear suspension technologies are offered; the car is known for its 0–100 km/h performance of close to 3 second runs. DJ Sports Cars International Ltd built the first DAX Rush in 1991, however, as some cars are built on older chassis, the year of construction can be earlier than 1991. in cooperation with the German company Mohr, who produced replicas of the Lotus Super Seven, a license production of DAX Rush was started in England based on this replica. The DAX Rush Quadra was introduced in 1998 and the DAX Rush Motorcycle in 2001; the model has two main subcategories: The car engine format with two optional set ups. Both options are offered with De Dion or IRS.
The motorcycle engine format. These two FR layout models are separated by the type of rear suspension selected; the front suspension on both models are based on parts from Ford Sierra, wishbones from DAX and Spax coil-over dampers. The Spax dampers are used in the rear suspension. Both the De Dion and IRS rear suspension systems are based on parts from Ford Sierra and Scorpio Granada, Dax's own suspension design. An optional choice for competition use is offered for the IRS; the brake system is a dual circuit, balance bar braking system that allows independent front and rear axle adjustments of the brakes. The brake parts are taken from Ford Sierra; the F4 layout Quadra model uses the Ford Sierra RS Cosworth 4x4 transmission, transfer box, front propshaft and front differential with minor modifications. The rear suspension is the same as on the IRS FR model, but the front has modified wishbones to take the Ford 4x4 uprights with their driveshafts; the Quadra has a standard tyre dimension of 225 on both axles.
The FR layout motorcycle model has the same main specifications as the De Dion, is only offered with this rear suspension. Motorcycle engines are used in this model. Standard engine options on the Rush De Dion, Rush IRS and the Rush Quadra Ford OHC Ford DOHC Ford Zeta/Zetec Vauxhall 16V Ford Cosworth Turbo YB Rover V8 Honda S2000 /> PSA racing Standard engine options on the Rush Motorcycle Honda Fireblade Kawasaki ZX12R Suzuki Hayabusa DAX Cars Official Homepage This company no longer supports the Rush. DAX Sporting Club DAX Cars Benelux Rush Builder Links