These are the known mechanical and performance specifications for your 1951 BMW R25 2.
Basic Specs
Engine
Displacement247.00 ccm (15.07 cubic inches)
Type
DetailsSingle cylinder, four-stroke
Max RPM
Compression6.5:1
Bore/Stroke68.0 x 68.0 mm (2.7 x 2.7 inches)
Valves/Cylinder
FuelingCarburettor. Bing
IgnitionBattery
Exhaust
LubricationWet sump
CoolingAir
Drivetrain
Gearbox4-speed
Final DriveShaft drive (cardan)
ClutchSingle plate dry-cable operated
Driveline
Performance
Horespower11.96 HP (8.7 kW)
Torque
Top Speed80.0 km/h (49.7 mph)
Fuel Economy & Polution
Fuel Consumption2.90 litres/100 km (34.5 km/l or 81.11 mpg)
Fuel Capacity12.00 litres (3.17 gallons)
Emissions67.3 CO2 g/km. (CO2 - Carbon dioxide emission)
Chassis
Frame TypeSteel-single cradlel
Rake
Trail
Front SuspensionCartridge
Front Travel
Rear SuspensionTwin shock-Plunger
Rear Travel
SeatSolo seat with springs
Seat Height730 mm (28.7 inches) If adjustable, lowest setting.
Alt. Seat Height
Total Height730 mm (28.7 inches)
Total Length2,020 mm (79.5 inches)
Total Width790 mm (31.1 inches)
Ground Clearance108 mm (4.3 inches)
Wheelbase1,335 mm (52.6 inches)
Dry Weight
Wet Weight140.0 kg (308.6 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