BRM P83 1966

>> YOUR LINK HERE: ___ http://youtube.com/watch?v=eX5aNOnOIlk

by http://dpsblog.com • • Konstruktőr: British Racing Motors, Anglia • Évjárat: 1966 • Motor: BRM H16 16 hengeres 3,0 L • Lökettérfogat: 2999 cm3 • Teljesítmény: 400 LE, 10000 fordulat/perc • Nagydíjak száma: 27 • • BRM H16 • A BRM P83, the only BRM model which ran successfully with the H16 engine. Note position of inlet trumpets and cam covers on the side of the H16 engine. • • For 1966, the engine regulations changed to permit 3.0 litre atmospheric (or 1.5 litre supercharged) engines. BRM refused Peter Berthon's and Aubrey Woods's proposal to build a V12, and instead built a strange engine, designed by Tony Rudd and Geoff Johnson, the H16 (BRM P75), which essentially used two flat-8 engines (derived from their 1.5 L V8) one above the other, with the crankshafts geared together. • A BRM H16 engine, the final, 1968, 64-valve incarnation of the design. • • BRM found the H16 (2.75 x 1.925 in, 69.85 x 48.895 mm) attractive because it was initially planned to share design elements and components with the successful 1.5 litre V8. While the engine was powerful, it was also heavy and unreliable - Rudd claims that his drawings were not followed accurately and many of the castings were much thicker and heavier than he had specified. (When Lotus took delivery of their first H16 it took six men to carry it from the van to the workshop). At that time, BRM earned the nickname of British Racing Misery . BRM, Lotus, and various privateers had been using enlarged versions of the BRM 1.5 V8 of up to 2.1 litres in 1966, as competitive 3.0 engines were in short supply in this first year of the new regulations. Lotus also took up the H16 as an interim measure until the Cosworth DFV was ready, building the Lotus 43 to house it, and Jim Clark managed to win the US Grand Prix at Watkins Glen with this combination. It was the only victory for this engine in a World Championship race. Lotus built the similar Lotus 42 designed for Indianapolis with a 4.2 litre version of the H16 (2.9375 x 2.36 in, 74.61 x 59.94 mm) but this was never raceworthy; the cars were raced with Ford V8s instead. • • The H16 engine was redesigned with a narrow angle 4 valve head and magnesium main castings to reduce weight and increase power, but never raced in a car as BRM decided to use the V12 unit which was being sold to other F1 and sports car teams with encouraging results.

#############################

New on site