Mercedes (from 1926 Mercedes-Benz) 15/70/100 hp, from 1928: 15/70/100 hp Type 400

Combustion principle:
four-stroke Otto (carburettor engine with engageable Roots supercharger)
Configuration:
front, longitudinal; vertical
Number of cylinders / arrangement:
6 / in-line
Bore x Stroke:
80 x 130 mm
Total displacement:
3920 cc (tax classification: 3895 cc)
Compression ratio:
4.7
Rated output:
70 hp at 2800 rpm, with supercharger 100 hp at 3100 rpm
Number of valves / arrangement:
1 intake, 1 exhaust / overhead
Valve operation:
1 overhead camshaft
Camshaft drive:
vertical shaft
Fuel system:
1 Mercedes or Mercedes-Benz throttle carburettor with annular float
Fuel tank: position / capacity:
in the rear / 110 l

Frame design:
U-section pressed-steel frame
Front-wheel suspension:
rigid axle
Rear-wheel suspension:
rigid axle
Front springs:
semi-elliptical springs
Rear springs:
cantilever semi-elliptical springs, from 1927 underslung semi-elliptical springs
Steering:
worm-and-nut steering, right or left-hand
Brake system (foot brake):
mechanical, from 1928/29 with Bosch-Dewandre vacuum booster; acting on front and rear wheels
Parking brake (hand brake):
mechanical, acting on rear wheels
Wheels:
wooden- or wire-spoke wheels
Tires:
895 x 150; 33 x 5" high pressure or 33 x 6.75 low pressure
Driven wheels:
rear wheels
Drivetrain:
cardan shaft