These are the known mechanical and performance specifications for your 1938 BMW R12 Twin carb.
Basic Specs
Engine
Displacement745.00 ccm (45.46 cubic inches)
Type
DetailsTwo cylinder boxer, four-stroke
Max RPM
Compression5.2:1
Bore/Stroke78.0 x 78.0 mm (3.1 x 3.1 inches)
Valves/Cylinder
FuelingCarburettor. Amal
Ignition
Exhaust
LubricationWet sump
CoolingAir
Performance
Horespower19.99 HP (14.6 kW)
Torque
Top Speed120.0 km/h (74.6 mph)
Fuel Economy & Polution
Fuel Consumption
Fuel Capacity14.00 litres (3.70 gallons)
Emissions
Chassis
Frame TypeSteel-doble cradle
Rake
Trail
Front SuspensionCartrige
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 Width900 mm (35.4 inches)
Ground Clearance
Wheelbase
Dry Weight
Wet Weight185.0 kg (407.9 pounds)
Wheels & Brakes
Front Tire/Tyre3.50-19
Rear Tire/Tyre3.5-19
Front BrakesExpanding brake (drum brake). Single
Front Brake Diameter200 mm (7.9 inches)
Rear BrakesExpanding brake (drum brake)
Rear Brake Diameter
Wheels
Comments