R3

R3
Production Model Years
   1936 - 1936

Frame and Engine Numbers

   Frame numbers
    1001 - 1740
    ———
   Engine numbers
    20001 - 20740

 

Model Documentation

 

Model Specifications

Drivetrain
Displacement494cc
Cylinders2
Bore x Stroke (mm)68 x 68
HP @ RPM8.5 @ 3200
Compression Ratio5.0:1
ValvesSidevalve, 2 per cylinder
ClutchDry, single plate, cable operated
Transmission3 speed, hand shifted
Final DriveDriveshaft
Running Gear
FrameTubular, brazed double loop
Front SuspensionUndamped, trailing link, dual leaf spring
Rear SuspensionRigid
Front Brakes150mm drum, single leading shoe (early models had no front brakes)
Rear BrakesV-block pressed into dummy rim sheave, heel operated
Electrical
IgnitionBosch magneto
Spark PlugsBosch W145
GeneratorBosch magneto/generator
Capacities & Measurements
Weight122kg
Fuel14l
Wheelbase1380mm
Top Speed95kph
Number Produced3090

The information provided here was obtained from a variety of public sources and may not reflect official BMW archival data.
Please contact the BMW Archives for official data regarding models.