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THE AERONAUTICAL ENGINE WITH THE BEST POWER / WEIGHT RATIO





Motor can be ordered with clockwise or anticlockwise rotation
POWER / WEIGHT RATIO [Hp/Kg (Hp/lbs)] |
1.55 (0.70) |
MAXIMUM TORQUE [Nm (Ft-lbs)] | 217.5 (160.4) @ 4000rpm |
MAXIMUM POWER [Hp (kW)] | 122.2 (91.1) @ 4000rpm |
- Type 4-cylinder boxer
- Dimensions L x W x H [mm (in)] 672 x 762 x 419 (26.46 x 30 x 16.5)
- Fuel Mo.GAS min. AKI 90, R.O.N. 95, M.O.N. 85, LL100
- Cooling System Liquid cooled with a mechanical pump

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Engine Data
Model | SPIRIT 122 GEARED R/L |
Type | 4 cylinder boxer |
Displacement [cm3 (in3)] | 2201 (134) |
Weight [Kg (lbs)] | 79 (174) dry (without accessories) |
Dimension L x W x H [mm (in)] | 672 x 762 x 419 (26.46 x 30 x 16.5) |
Stroke X Bore [mm (in)] | 81 x 93 (3.18 x 3.66) |
Compression RateĀ | 10.3 Ć· 1 |
Thermodynamic CycleĀ | 4 stroke fuel (Otto cycle) |
FuelĀ | Mo.GAS min. AKI 90, R.O.N. 95, M.O.N. 85, LL100 |
Cooling SystemĀ | Liquid with mechanical pump |
Lubrication | Semi-dry sump, pressure oil feed assisted with internal pump |
Timing SystemĀ | 2 valves per cylinder with S.O.H.C. (Single Over Head Camshaft) |
Timing Driving SystemĀ | Gear + chain with automatic chain tensioner |
Transmission
TypeĀ | Gearbox with helical gear (separate lubrication) |
Transmission Ratio | 1 Ć· 1.732 |
Max Propeller Speed [rpm] | 2400 |
Propeller Rotation | Right (R) or Left (L) |
Damper | Elasto-dissipative with Active Damping Control (A.D.C.) |
Optional | Integrated constant speed hydraulic governor |
ELECTRIC DATA
Generator | Permanent magnet, oil cooled, 260W (12.5V-21A) |
Starter | Electric 0.65kW with anti-kickback clutch |
F.R.I.S. (Full Rendundancy Injection System) |
ECU with dual injection and ignition; altitude and temperature compensation; Limp Home strategy |
Performance
Max Power [Hp (kW)] | 122.2 (91.1) @ 4050 rpm |
Max Torque [Nm (Ft-lb)] | 217.5 (160.4) @ 4000 rpm |
Max Continuous Power [Hp (kW)] | 110 (82) @ 4000 rpm |
Max Engine Speed [rpm] | 4200 |
Power/Weight [Hp/Kg (Hp/lbs)] | 1.55 (0.70) |
Fuel Cons. [L/h (USgal/h)] | 18.5 (4.9) @ 75 Hp |
TBO [h] | 2000 |
DIMENSIONS AND WEIGHT
Weight [Kg (lbs)] |
79 (174) dry (without accessories) |
Dimension L x W x H [mm (in)] |
672 x 762 x 419 (26.46 x 30 x 16.5) |
Fuel Consumption
Fuel Cons. [L/h (USG/h)] |
18.5 (4.9) @ 75Hp |
Engine Data
Model |
SPIRIT 122 GEARED R/L |
Type |
4 cylinder boxer |
Displacement [cm3 (in3)] |
2201 (134) |
Weight [Kg (lbs)] |
79 (174) dry (without accessories) |
Dimension L x W x H [mm (in)] |
672 x 762 x 419 (26.46 x 30 x 16.5) |
Stroke X Bore [mm (in)] |
81 x 93 (3.18 x 3.66) |
Compression RateĀ |
10.3 Ć· 1 |
Thermodynamic CycleĀ |
4 stroke fuel (Otto cycle) |
FuelĀ |
Mo.GAS min. AKI 90, R.O.N. 95, M.O.N. 85, LL100 |
Cooling SystemĀ |
Liquid with mechanical pump |
Lubrication |
Semi-dry sump, pressure oil feed assisted with internal pump |
Timing SystemĀ |
2 valves per cylinder with S.O.H.C. (Single Over Head Camshaft) |
Timing Driving SystemĀ |
Gear + chain with automatic chain tensioner |
Transmission
TypeĀ |
Gearbox with helical gear (separate lubrication) |
Transmission Ratio |
1 Ć· 1.732 |
Max Propeller Speed [rpm] |
2400 |
Propeller Rotation |
Right (R) or Left (L) |
Damper |
Elasto-dissipative with Active Damping Control (A.D.C.) |
Optional |
Integrated constant speed hydraulic governor |
ELECTRIC
Generator |
Permanent magnet, oil cooled, 260W (12.5V-21A) |
Starter |
Electric 0.65kW with anti-kickback clutch |
F.R.I.S. (Full Rendundancy Injection System) |
ECU with dual injection and ignition; altitude and temperature compensation; Limp Home strategy |
Performance
Max Power [Hp (kW)] |
122.2 (91.1) @ 4050 rpm |
Max Torque [Nm (Ft-lb)] |
217.5 (160.4) @ 4000 rpm |
Max Continuous Power [Hp (kW)] |
110 (82) @ 4000 rpm |
Max Engine Speed [rpm] |
4200 |
Power/Weight [Hp/Kg (Hp/lbs)] |
1.55 (0.70) |
Fuel Cons. [L/h (USgal/h)] |
18.5 (4.9) @ 75 Hp |
TBO [h] |
2000 |
DIMENSIONS AND WEIGHT
Weight [Kg (lbs)] |
79 (174) dry (without accessories) |
Dimension L x W x H [mm (in)] |
672 x 762 x 419 (26.46 x 30 x 16.5) |
Fuel Consumption
Fuel Cons. [L/h (USG/h)] |
18.5 (4.9) @ 75Hp |