.

BMW R 71

Make Model

BMW R 71

Year

1938 - 41

Engine

Four stroke, two cylinder horizontally opposed Boxer, pushrod operated 2 valves per cylinder.

Capacity

746 cc / 45.5 cu in.
Bore x Stroke 78 x 78 mm
Compression Ratio

5.5:1

Cooling System Air cooled

Induction

2 x Graetzin G 24 carburetors

Ignition

Battery ignition

Starting

Kick

Clutch Single plate, dry

Max Power

16.4 kW / 22 hp @ 4600 rpm

Transmission

4 Speed

Final Drive

Shaft
Gear Ratio 1st 3.60 / 2nd 2.28 / 3rd 1.70 / 4th 1.30
Frame Twin loop steel tubular frame

Front Suspension

Telescopic front fork,

Rear Suspension

Telescopic suspension, plunger type

Front Brakes

∅200mm Drum duplex full hub

Rear Brakes

∅200mm Drum simplex full hub

Front Tyre

3.50 -19"

Rear Tyre

3.50 -19"

Wet-Weight

187 kg / 412 lbs

Fuel Capacity 

14 liters / 3.6 US gal