.

BMW R 3

.  

Make Model

BMW R 3

Year

1936

Engine

Four stroke, single cylinder vertical

Capacity

305 cc / 18.6 cu in.
Bore x Stroke 68 x 84 mm
Compression Ratio

6.0:1

Cooling System Air cooled

Induction

1 x Register carburettor SUM type CK 3/500

Ignition

Battery ignition

Starting

Kick

Generator

Bosch 6V/45/70 W

Clutch Single plate, dry

Max Power

8.2 kW / 11hp @ 4200 rpm

Transmission

4 Speed

Final Drive

Shaft
Gear Ratio 1st 3.6 / 2nd 2.18 / 3rd 1.35 / 4th 1.00:1
Frame Pressed steel duplex frame

Front Suspension

Cantilever spring, 9 laminae with friction shock absorber

Rear Suspension Rigid
Front Brake 200mm Drum

Rear Brakes

200mm Drum

Front Tyre

3.50 x 26" balloon

Rear Tyre

3.50 x 26" balloon

Wet-Weight

149 Kg / 328 lbs

Fuel Capacity 

12 L / 3.2 US gal
.