Hace 100 años, Récord Benz

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El 17 de marzo de 1910: Barney Oldfield fijó un nuevo récord mundial en Daytona Beach, en Florida, E.E.U.U., conduciendo los 200 caballos de potencia del Benz, apodado el “Benz relámpago”, a una velocidad media de 211,4 kilómetros por hora sobre una milla.

Información técnica

Technical data for the Benz 200 hp

General data:

Wheelbase: 2800 mm (vehicle no. 6: 3200 mm)

Track width front/rear: 1330/1320 mm

Dimensions L x W x H: 4820 x 1600 x 1280 mm

Weight of car: 1450 kg

Weight of engine: 407 kg

Maximum speed: 228.1 km/h

Engine:

Benz racing car engine

Operating principle: four-stroke petrol

No. of cylinders/arrangement: 4/in-line

Displacement: 21,500 cc

Bore x stroke: 185 x 200 mm

Output: 147 kW at 1600 rpm

Torque: 36 mkg at 1000 rpm

Compression ratio: 1:5.8

Maximum engine speed: 1650 rpm

Valves: overhead, 2 per cylinder, side-mounted camshaft, drive via gear wheels

Mixture formation: 1 horizontal round slide carburettor

Fuel feed: compressed-air hand pump, operated by co-driver

Lubrication: initially splash lubrication, later forced feed lubrication via gear pump and clean oil input

Starter: starting crank, buzzer ignition

Ignition: high-voltage magneto ignition, 2 Bosch D4 magneto

Ignition control: by hand using lever on steering wheel

Fuel tank: 73 litres

Power transmission:

Drive: via intermediate shaft and chain drive to the rear wheels

Clutch: cone clutch

Transmission: four-speed manual transmission

Gearshift: gate-type shift, mounted on the right on the outside of the car

Chassis:

Sectional frame

Axles: rigid axles with semi-elliptical springs at the front and rear

Brakes: front – none; rear – expanding brakes acting on the rear wheels and an external band brake acting on the intermediate shaft; handbrake acting on the rear axles

Steering: helical spindle steering

Wheels: wire-spoke or wood-spoke wheels

Tires: 820 x 120 Continental balloon tires