These are the known mechanical and performance specifications for your 1961 Junak M10.
Basic Specs
Engine
Displacement349.00 ccm (21.30 cubic inches)
Type
DetailsSingle cylinder, four-stroke
Max RPM6500
Compression7.0:1
Bore/Stroke75.0 x 79.0 mm (3.0 x 3.1 inches)
Valves/Cylinder2
FuelingCarburettor
Ignition
Exhaust
Lubrication
CoolingOil & air
Performance
Horespower19.00 HP (13.9 kW)
Torque28.00 Nm (2.9 kgf-m or 20.7 ft.lbs)
Top Speed120.0 km/h (74.6 mph)
Fuel Economy & Polution
Fuel Consumption3.00 litres/100 km (33.3 km/l or 78.41 mpg)
Fuel Capacity17.00 litres (4.49 gallons)
Emissions69.6 CO2 g/km. (CO2 - Carbon dioxide emission)
Chassis
Frame Type
Rake
Trail
Front Suspension
Front Travel
Rear Suspension
Rear Travel
Seat
Seat Height
Alt. Seat Height
Total Height
Total Length
Total Width
Ground Clearance
Wheelbase
Dry Weight175.0 kg (385.8 pounds)
Wet Weight190.0 kg (418.9 pounds)
Wheels & Brakes
Front Tire/Tyre
Rear Tire/Tyre
Front Brakes
Front Brake Diameter
Rear Brakes
Rear Brake Diameter
Wheels
Comments
Brand also called SFM Junak. Polish brand.