R4

R4

1933 BMW R4

Country: Germany
Engine: Air-cooled single cylinder four stroke
Ignition: Battery and coil
Power Rating: 12 bhp @4,200 rpm
Bore x Stroke: 78 x 84mm
Displacement: 398cc
Valves: Overhead pushrod activated
Fuel System: Single Bing carburetor
Transmission: Four speed, hand shift
Suspension: Front trailing link with leaf spring, rigid gear
Brakes: Front and rear drum
Weight: 300 lbs
Top Speed: 62mph (100 kph)
BMW produced 15,200 R4’s using innovative mass production techniques, setting new standards of design and quality. Pressed steel frame and components were quick and easy to stamp out and assemble reducing manufacturing costs.

EXIF information
model Canon EOS 7D
exposureTime 1/80 s
fnumber f/1.8
focalLength 50