These are the known mechanical and performance specifications for your 1939 BMW R61.
Basic Specs
Engine
Displacement600.00 ccm (36.61 cubic inches)
Type
DetailsTwo cylinder boxer, four-stroke
Max RPM
Compression5.7:1
Bore/Stroke70.0 x 78.0 mm (2.8 x 3.1 inches)
Valves/Cylinder
FuelingCarburettor. Amal
Ignition
Exhaust
LubricationWet sump
CoolingAir
Drivetrain
Gearbox4-speed
Final DriveShaft drive (cardan)
ClutchDry-single plate-cable operated
Driveline
Performance
Horespower17.95 HP (13.1 kW)
Torque
Top Speed115.0 km/h (71.5 mph)
Fuel Economy & Polution
Fuel Consumption3.50 litres/100 km (28.6 km/l or 67.21 mpg)
Fuel Capacity14.00 litres (3.70 gallons)
Emissions81.2 CO2 g/km. (CO2 - Carbon dioxide emission)
Chassis
Frame TypeSteel-double cradle
Rake
Trail
Front SuspensionLeading link
Front Travel
Rear SuspensionTwin shock-Swingarm
Rear Travel
SeatSolo seat with springs
Seat Height
Alt. Seat Height
Total Height960 mm (37.8 inches)
Total Length2,130 mm (83.9 inches)
Total Width815 mm (32.1 inches)
Ground Clearance
Wheelbase1,400 mm (55.1 inches)
Dry Weight
Wet Weight184.0 kg (405.7 pounds)
Wheels & Brakes
Front Tire/Tyre3.50-19.00
Rear Tire/Tyre3.50-19.00
Front BrakesExpanding brake (drum brake). Single
Front Brake Diameter200 mm (7.9 inches)
Rear BrakesExpanding brake (drum brake)
Rear Brake Diameter200 mm (7.9 inches)
Wheels
Comments