Mercedes 80 hp "Kaiserpreis" racing car, 1907

Inlet valves:
1 overhead valve per cylinder, actuated via push rod and rocker arm
No. of cylinders / arrangement:
4 / in line
Outlet valves:
1 side valve per cylinder
Configuration:
Front, longitudinal; vertical
Valve operation:
2 lateral camshafts (1 of them actuating only the ignition system), gear drive
Combustion principle:
Four-stroke Otto
Crankshaft:
3-bearing (friction bearings of Magnalium)
Bore x Stroke:
140 x 129.9 mm
Fuel system:
1 Carburettor
Total displacement:
7999 cc
Maximum / output / rated output:
80 hp at 1300/min
Cooling:
Water circulation cooling via feed pump, honeycomb radiator
Cylinders:
Gray cast iron, cylinders cast in pairs with welded-on cooling-water jackets
Cylinder head:
Gray cast iron, cast in one piece together with cylinders
Starter:
Starting crank

Hand brake:
Acting on rear wheels
Wheels:
Wooden-spoke wheels
Frame design:
Pressed-steel frame
Front wheel suspension:
Rigid axle with semi-elliptic springs
Drivetrain:
Transmission to differential countershafts, via side chains to rear wheels
Rear wheel suspension:
Rigid axle with semi-elliptic springs
Brake system:
Mechanically actuated
Front brakes:
Not fitted
Rear brakes:
Inside shoe brakes (rear wheels)