1931 BMW R11 Series 3 Specs

motorcycle specs

These are the known mechanical and performance specifications for your 1931 BMW R11 Series 3.

Basic Specs

Year1931
MakeBMW
ModelBMW R11 Series 3
Cost

Engine

Displacement745.00 ccm (45.46 cubic inches)
Type
DetailsTwo cylinder boxer, four-stroke
Max RPM
Compression5.5:1
Bore/Stroke78.0 x 78.0 mm (3.1 x 3.1 inches)
Valves/Cylinder
FuelingCarburettor. Single SUM CK 3/500 F 1
IgnitionMagneto
Exhaust
LubricationForced feed
CoolingAir

Drivetrain

Gearbox3-speed
Final DriveShaft drive (cardan)
ClutchTwo plates-dry
Driveline

Performance

Horespower18.00 HP (13.1 kW)
Torque
Top Speed100.0 km/h (62.1 mph)

Fuel Economy & Polution

Fuel Consumption4.50 litres/100 km (22.2 km/l or 52.27 mpg)
Fuel Capacity14.00 litres (3.70 gallons)
Emissions104.4 CO2 g/km. (CO2 - Carbon dioxide emission)

Chassis

Frame TypeSteel-double cradlel
Rake
Trail
Front SuspensionPlate springe
Front Travel
Rear SuspensionRigid
Rear Travel
SeatSpring-mounted seat
Seat Height
Alt. Seat Height
Total Height940 mm (37.0 inches)
Total Length2,100 mm (82.7 inches)
Total Width890 mm (35.0 inches)
Ground Clearance
Wheelbase1,380 mm (54.3 inches)
Dry Weight
Wet Weight162.0 kg (357.1 pounds)

Wheels & Brakes

Front Tire/Tyre3.50-26.00
Rear Tire/Tyre3.50-26.00
Front BrakesExpanding brake (drum brake)
Front Brake Diameter200 mm (7.9 inches)
Rear Brakes
Rear Brake Diameter55 mm (2.2 inches)
Wheels

Comments

It appears you're interested in specifications for the BMW R11 Series 3. This Allround model is powered by a Two cylinder boxer, four-stroke engine with 745.00 ccm (45.46 cubic inches) of actual displacement before 5.5:1 compression. Fueling is metered via Carburettor. Single SUM CK 3/500 F 1 allowing this machine to produce its 18.00 HP (13.1 kW) horsepower and torque. According to our records engine heat of the BMW R11 Series 3 is moderated by Air. You'll need to get familiar with the 3-speed transmission and pay attention to final drive Shaft drive (cardan) maintainence. Our best information shows that the front tire size is 3.50-26.00 and the rear is 3.50-26.00 . The entire package is supported by the frame, Steel-double cradlel. We know you like to go fast or cruise all day, but when you need to stop, you'll be dependant on Expanding brake (drum brake) front brakes and rear brakes. The BMW R11 Series 3 was launched in 1931, and we're happy to know (or assume) you've got one in your garage. To help you keep your ride in tip-top shape, consider purchasing an owner or service manual.