Horsepower (hp) is a unit of measurement of power, or the rate at which work is done, usually in reference to the output of engines or motors. There are many different standards and types of horsepower. Two common definitions used today are the imperial horsepower, which is about 745.7 watts, and the metric horsepower, which is approximately 735.5 watts.
The Lotus Elise is a sports car conceived in early 1994 and released in September 1996 by the British manufacturer Lotus Cars. A two-seater roadster with a rear mid-engine, rear-wheel-drive layout, the Elise has a fibreglass body shell atop its bonded extruded aluminium chassis that provides a rigid platform for the suspension, while keeping weight and production costs to a minimum. The Elise was named after Elisa Artioli, the granddaughter of Romano Artioli who was chairman of Lotus and Bugatti at the time of the car's launch.
Caterham Cars Ltd. is a British manufacturer of specialist lightweight sports cars established in Caterham, England, with their headquarters in Dartford, England. Their current model, the Caterham 7, originally launched in 1973, is a direct evolution of the Series 3 Lotus Seven designed by Colin Chapman. In the 1990s the company made the Caterham 21, a two-seater soft top alternative to the MG F and Lotus Elise,. A track-only car, the SP/300.R, a joint project with Lola was released for customer testing in 2010 and was scheduled for release in 2013.
Overdrive is the operation of an automobile cruising at sustained speed with reduced engine speed (rpm), leading to better fuel consumption, lower noise, and lower wear. The term is ambiguous. The most fundamental meaning is that of an overall gear ratio between engine and wheels, such that the car is over-geared, and cannot reach its potential top speed, i.e. the car could travel faster if it were in a lower gear, with the engine turning at higher RPM.
A Formula One car or F1 car is a single-seat, open-cockpit, open-wheel formula racing car with substantial front and rear wings, and an engine positioned behind the driver, intended to be used in competition at Formula One racing events. The regulations governing the cars are unique to the championship and specify that cars must be constructed by the racing teams themselves, though the design and manufacture can be outsourced. Formula One drivers experience peak cornering forces of up to six lateral g.
The Porsche 997 is the sixth generation of the Porsche 911 sports car manufactured and sold by the German automobile manufacturer Porsche between 2004 and 2013. Production of the Carrera and Carrera S coupés began in early 2004, all-wheel drive Carrera 4 and Carrera 4S began to be delivered to customers in November 2005, the Turbo and GT3 derivatives went on sale in late 2006 and the GT2 in 2007. In addition to the coupé and cabriolet versions, Targa versions of the Carrera 4 and Carrera 4S were also available, which carry on with the "glass canopy" roof design used since its first application on the 993 until the 991, which reverted to the classic targa top layout used on the early 911 Targas.
A dynamometer or "dyno" for short, is a device for simultaneously measuring the torque and rotational speed (RPM) of an engine, motor or other rotating prime mover so that its instantaneous power may be calculated, and usually displayed by the dynamometer itself as kW or bhp.
The Ferrari 308 GTB berlinetta and targa topped 308 GTS are V8 mid-engined, two-seater sports cars manufactured by the Italian company Ferrari from 1975 until 1985. The 308 replaced the Dino 246 GT and GTS in 1975 and was updated as the 328 GTB/GTS in 1985. The similar 208 GTB and GTS were equipped with a smaller, initially naturally aspirated and later turbocharged, two-litre engine, and were sold mainly in Italy.
Hybrid Synergy Drive (HSD), also known as Toyota Hybrid System II, is the brand name of Toyota Motor Corporation for the hybrid car drive train technology used in vehicles with the Toyota and Lexus marques. First introduced on the Prius, the technology is an option on several other Toyota and Lexus vehicles and has been adapted for the electric drive system of the hydrogen-powered Mirai, and for a plug-in hybrid version of the Prius. Previously, Toyota also licensed its HSD technology to Nissan for use in its Nissan Altima Hybrid. Its parts supplier Aisin offers similar hybrid transmissions to other car companies.
The BMC C-Series is a straight-6 automobile engine produced from 1954 to 1971. Unlike the Austin-designed A-Series and B-Series engines, it came from the Morris Engines drawing office in Coventry and therefore differed significantly in its layout and design from the two other designs which were closely related. This was due to the C-Series being in essence an enlarged overhead valve development of the earlier 2.2 L Straight-6 overhead camshaft engine used in the post-war Morris Six MS and Wolseley 6/80 from 1948 until 1954, which itself also formed the basis of a related 1.5 L 4-cylinder engine for the Morris Oxford MO in side-valve form and the Wolseley 4/50 in overhead camshaft form. Displacement was 2.6 to 2.9 L with an undersquare stroke of 88.9 mm (3.50 in), bored out to increase capacity.
Power density, defined as the amount of power per unit volume, is a critical parameter used across a spectrum of scientific and engineering disciplines. This metric, typically denoted in watts per cubic meter (W/m³), serves as a fundamental measure for evaluating the efficacy and capability of various devices, systems, and materials based on their spatial energy distribution.
The Suzuki GSX-R750 is a sports motorcycle made by Suzuki since 1984. It was introduced at the Cologne Motorcycle Show in October 1984 as a motorcycle of the GSX-R series for the 1985 model year.
The Grinnall Scorpion III, by Grinnall Specialist Cars, is a reverse trike, with two wheels at the front and one at the rear, which is a better-handling configuration than one wheel at the front. Designed in 1991 by Steve Harper, the Scorpion III features a GRP body tub which is bonded to a space frame chassis underneath, and employs a BMW K-series motorcycle engine as its power plant. The engine, gearbox and final drive from the motorcycle are utilised with a special rear wheel which is fitted with a car tyre, as are the front wheels. It has a very good power-to-weight ratio which endows it with excellent performance. The rear wheel is of a smaller circumference than the bike's wheel so the gearing is optimised for a lower top speed of around 125 mph (201 km/h) with 0-60 mph (97 km/h) taking around 6 seconds when using a K1100 engine. Any BMW K engine can be used, from a 750 cc 3-cylinder, to a 1200 cc, 4-cylinder, giving power outputs from 75 bhp (56 kW) to 130 bhp (97 kW).
The Proton Satria R3 is a 3-door hatchback introduced in late 2004 by Malaysian automaker Proton. It was conceived as a run-out model of the successful Satria GTi, and was positioned at the top of the Satria range. Original Stage 1 R3s utilises the same Mitsubishi-sourced 1.8-litre, engine as the Satria GTi, producing 170 bhp (105 kW) and 168 nm of torque. Power is channelled to the front wheels via a five-speed manual transmission, also sourced from the GTi.
The Fiat 519 was a model of car produced by Italian automotive company, Fiat between 1922 and 1927.
The Caterham Seven CSR is the latest model from sports car manufacturer Caterham Cars. The CSR is the most heavily 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 (149 kW), with a 0–60 mph (0–97 km/h) time of 3.7 seconds. The upgraded engine produces 260 bhp (194 kW), with a 0–60 mph (0–97 km/h) time of 3.1 seconds and a top speed of 155 mph (249 km/h).
The fifth-generation Honda Civic is an automobile produced by Honda from 1991 until 1995. It debuted in Japan on September 9, 1991. At its introduction, it won the Car of the Year Japan award for the second time. Fifth-generation Civics were larger than their predecessors, had more aerodynamic bodies, and the wheelbase was increased to 257 cm (101.3 inches)—for the three-door hatchback—and to 262 cm (103.2 inches)—for the four-door sedan. The Civic Shuttle station wagon was not part of the fifth generation and was dropped for overseas markets, while the previous-generation wagon continued in Japan and Europe.
Motorcycle testing and measurement includes a range of more than two dozen statistics giving the specifications of the motorcycle, and the actual performance, expressed by such things as the output of the engine, and the top speed or acceleration of the motorcycle. Most parameters are uncontroversial and claims made by manufacturers are generally accepted without verification. These might include simple measurements like rake, trail, or wheelbase, or basic features, such as the type of brakes or ignition system.
The Audi RS 2 Avant is a high-performance version of the Audi 80 Avant estate car, manufactured from March 1994 to July 1995. Collaboratively designed as a joint venture between Audi AG and Porsche and based on Audi's B4/8C platform, it received the internal designation of P1. It featured the most powerful version of Audi's inline-five cylinder turbocharged engine. It represents Audi's first "RS" model, and the first of their high-performance Avants.
The Michel engine was an unusual form of opposed-piston engine. It was unique in that its cylinders, instead of being open-ended cylinders containing two pistons, were instead joined in a Y-shape and had three pistons working within them.
