Specifications (Rotax 912 UL)
General characteristics
Type: 4-cylinder, 4-stroke liquid / air cooled engine with opposed cylinders, dry sump forced lubrication with separate oil tank, automatic adjustment by hydraulic valve tappet, dual CD carburetors, mechanical diaphragm pump, electronic dual ignition, electric starter, integrated reduction gear 1 : 2.273
Bore: 79.5 mm
Stroke: 61 mm
Displacement: 1211.2 cm³
Length: 561 mm
Width: 576 mm
Dry weight: 60 kg with electric starter, carburetors, fuel pump, air filters and oil system
Components
Valvetrain: OHV, hydraulic lifters, pushrods, rocker arms
Fuel type: premium unleaded: 90 octane or higher leaded or unleaded or AVGAS 100 LL
Oil system: dry sump with trochoid pump, camshaft driven
Cooling system: liquid cooled cylinder heads, air cooled cylinders
Performance
Power output: 59.6 kW @ 5800 RPM
Specific power: 48.71 kW/L
Compression ratio: 9:1
Fuel consumption: 19.2 liters/h @ 5000 RPM (75% power)
Specific fuel consumption: 285 g/(kW·h) @ 5500 RPM (maximum continuous power)
Power-to-weight ratio: 0.98 kW/kg