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Two common definitions used today are the imperial horsepower as in "hp" or "bhp" which is about 745.7 watts, and the metric horsepower as in "cv" or "PS" which is approximately 735.5 watts. The electric horsepower "hpE" is exactly 746 watts, while the boiler horsepower is 9809.5 or 9811 watts, depending on the exact year.
In early September, CN7 accelerated from a standing start to just under 400 mph or 640 km/h in 24 seconds covering 1.5 miles, using approximately 80 per cent of the engine's full power. [2] The LSR attempt however, which was heavily sponsored by BP , Dunlop , and other British motor component companies, was unsuccessful and CN7 was severely ...
where is propulsive efficiency (typically 0.65 for wooden propellers, 0.75 metal fixed pitch and up to 0.85 for constant-speed propellers), hp is the engine's shaft horsepower, and is true airspeed in feet per second, weight is in lbs. The metric formula is:
1.1 kW (1.5 hp; 1.5 PS) First production car [57] Peugeot Type 15: 1897 6 kW (8 hp; 8 PS) Peugeot's first in-house engine [58] Daimler Phoenix 1899 17 kW (23 hp; 23 PS) First four-cylinder road car [59] Mercedes 35 HP: 1901 26 kW (35 hp; 35 PS) Originally designed as a race car, developed for road use [60] Mercedes Simplex: 1902
A typical turbocharged V8 diesel engine might have an engine power of 250 kW (340 hp) and a mass of 380 kg (840 lb), [1] giving it a power-to-weight ratio of 0.65 kW/kg (0.40 hp/lb). Examples of high power-to-weight ratios can often be found in turbines.
Many elements change how fast the car can accelerate to 60 mph. [ii] [iii] Tires, elevation above sea level, weight of the driver, testing equipment, weather conditions and surface of testing track all influence these times. [3]
After a lengthy break from world records Breedlove began work on a new Spirit in 1992, eventually named the Spirit of America Formula Shell LSRV.The vehicle is 44 ft 10 in long, 8 ft 4 in wide, and 5 ft 10 in high (13.67 m by 2.54 m by 1.78 m) and weighs 9,000 lb (4 t), construction is on a steel tube frame with an aluminium skin body.
During the race Fangio's car's V16 ran at a claimed 72 psi boost (4.9 ata) and 585 bhp (436 kW) at 11,800 rpm, the car reaching 186 mph (300 km/h). At around this time Tony Rudd , who had by then joined BRM after his previous period of secondment from Rolls-Royce, suggested that they build a lightweight, short-wheelbase, version of the car for ...