These are the known mechanical and performance specifications for your 1927 BMW R39.
Basic Specs
Engine
Displacement247.00 ccm (15.07 cubic inches)
Type
DetailsSingle cylinder, four-stroke
Max RPM
Compression6.1:1
Bore/Stroke68.0 x 68.0 mm (2.7 x 2.7 inches)
Valves/Cylinder
FuelingCarburettor. 20mm BMW Spezial
Ignition
Exhaust
LubricationWet sump
CoolingAir
Drivetrain
Gearbox3-speed
Final DriveShaft drive (cardan)
ClutchDry-single plate-cable operated
Driveline
Performance
Horespower5.98 HP (4.4 kW)
Torque
Top Speed100.0 km/h (62.1 mph)
Chassis
Frame TypeSteel doble cradle
Rake
Trail
Front SuspensionLeading link
Front Travel
Rear SuspensionRigid
Rear Travel
Seat
Seat Height
Alt. Seat Height
Total Height950 mm (37.4 inches)
Total Length2,050 mm (80.7 inches)
Total Width800 mm (31.5 inches)
Ground Clearance
Wheelbase
Dry Weight
Wet Weight110.0 kg (242.5 pounds)
Wheels & Brakes
Front Tire/Tyre3.5-27
Rear Tire/Tyre3.5-27
Front BrakesExpanding brake (drum brake)
Front Brake Diameter
Rear Brakes
Rear Brake Diameter
Wheels
Comments