BRM P25
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Constructor: | BRM |
Designer: | Peter Berton,Stuart Tresilian |
Chassis: | spaceframe |
Engine: | four cylinders |
Max speed: | 170 mph/270 kmh |
Wheelbase: | 90 in (229 cm). |
The BRM P25 was a well used Formula 1 race car from the 1950s,which was built from 1955 by manufacturer British Racing Motors (BRM) from Bourne in Lincolnshire Great Britain.
History
The BRM P25 had a long race history and many redesigns over the years. In contrast to the previous technical supercharged V16 BRM, the P25 was more simple and now light and compact.
Stuart Tresilian designed a four-cylinder in line engine with two valves per cylinder two ohcs and power at first of 248 bhp at 9000 rpm and later 272bhp at 8,500rpm (on AvGas).The Capacity: 2,491 cc and Bore & Stroke at 102.9 x 74.9mm,The transmission was a four-speed manual gearbox.The P25 Chassis design by Peter Berton was responsible for the as a tubular spaceframe.At first fitted with independent pneumatic
suspension,Then later after advice from Colin Chapman the front suspension by wishbones and coil springs. Rear suspension as de Dion with coil spring struts and disc brakes
The P 25 ran between 1955 and 1959. It was incredibly fast but handling wasa problem and there were rear brake troubles (a single disc) and persistent valve failures. It was modified several times to try to solve these problems.
After many years of frustration and problems with early cars, eventually during the 1957 to 1958 season there were victories in minor races and start of points-scoring in GP finishes.the BRM team at last won a world championship race, when Bonnier in 1959 Behra won the non-Championship Caen GP and The Silverstone Trophy race, and in 1959 Bonnier scored BRM's first ever Championship victory in the Dutch GP.
Almost all of the P25 cars were written Off in accidents over the years.
