These are the known mechanical and performance specifications for your 1937 BMW R20.
Basic Specs
Engine
Displacement192.00 ccm (11.72 cubic inches)
Type
DetailsSingle cylinder, four-stroke
Max RPM
Compression6.1:1
Bore/Stroke63.0 x 64.0 mm (2.5 x 2.5 inches)
Valves/Cylinder
FuelingCarburettor
IgnitionBattery
Exhaust
LubricationWet sump
CoolingAir
Drivetrain
Gearbox3-speed
Final DriveShaft drive (cardan)
ClutchDry-multiplate-cable operated
Driveline
Performance
Horespower8.02 HP (5.9 kW)
Torque
Top Speed95.0 km/h (59.0 mph)
Fuel Economy & Polution
Fuel Consumption
Fuel Capacity12.00 litres (3.17 gallons)
Emissions
Chassis
Frame TypeSteel-single cradlel
Rake
Trail
Front SuspensionTelescopic fork
Front Travel
Rear SuspensionRigid
Rear Travel
SeatSolo seat with springs
Seat Height
Alt. Seat Height
Total Height900 mm (35.4 inches)
Total Length2,000 mm (78.7 inches)
Total Width800 mm (31.5 inches)
Ground Clearance
Wheelbase1,330 mm (52.4 inches)
Dry Weight
Wet Weight130.0 kg (286.6 pounds)
Wheels & Brakes
Front Tire/Tyre2.99-19
Rear Tire/Tyre2.99-19
Front BrakesExpanding brake (drum brake)
Front Brake Diameter160 mm (6.3 inches)
Rear BrakesExpanding brake (drum brake)
Rear Brake Diameter160 mm (6.3 inches)
Wheels
Comments