Forced air cooling
Aluminium cylinders with ceramic nickel-silicon hardened bore coating, built for sustained high-power operation.
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FQ-550 Aviation Engine
Horizontally opposed, 4-cylinder
The FQ-550 is an aviation-grade, air-cooled two-stroke engine with a horizontally opposed four-cylinder layout. Automatic-advance CDI ignition and premix lubrication deliver stable output at high altitude and under demanding conditions. Every engine is dynamometer-tested and flight-verified before delivery, backed by worldwide technical support.
- 37 kWMax power
- 70 kgStatic thrust (100 m)
- 550 ccDisplacement
- 18.3 kgWeight
Core Technology
Engineered for Demanding Environments
Horizontally opposed, air-cooled two-stroke layouts with CDI ignition and premix lubrication.
CDI automatic-advance ignition
Precise ignition timing, synchronized opposed-cylinder firing with automatic transition at idle.
Forged seven-piece crankshaft
High-strength and lightweight, with optimized vibration damping for a long service life.
Wide speed range (1300–7500 rpm)
Balances low-speed torque with high-rpm power and suits a range of propellers.
Specifications
Specifications
Every figure is dynamometer-verified to aviation-grade standards.
- Engine model
- FQ-550CC
- Layout
- Horizontally opposed, 4-cylinder
- Stroke
- Two-stroke
- Displacement
- 550 cc
- Bore × stroke
- 66 mm × 40 mm
- Power
- 49.62 hp / 37 kW
- Speed range
- 1300–7500 rpm
- Static thrust (100 m)
- 70 kg
- Static thrust (1800 m)
- 61.8 kg
- Max takeoff weight
- 220 kg
- Recommended propeller
- 32×20; 30×23; 30×25
- Weight
- 18.3 kg
- Crankshaft
- Forged, seven-piece assembly
- Fuel / oil ratio
- 50:1
- Ignition
- CDI automatic-advance
- Ignition sequence
- Synchronized opposed-cylinder firing, automatic transition at 500 rpm
- Carburettor / EFI
- 2 diaphragm all-position carburettors, no choke / injection port
- Generator
- 800 W / 2000 W
- Piston
- Oval-ground, cast aluminium alloy
- Cylinder
- Cast aluminium alloy, ceramic nickel-silicon hardened bore
- Starter
- Optional
- Fuel consumption (carburettor)
- 14 L/h
- Fuel consumption (EFI)
- 10 L/h
- Options
- Exhaust manifold, starter, generator
- Dimensions (L×W×H)
- 430 × 340 × 400 mm
Engineering Dimensions
Compact, Lightweight Layout
Precise dimensions make integration into an airframe or vehicle straightforward.
430 mmLength
340 mmWidth
400 mmHeight
18.3 kgNet weight
“The FQ-550 builds aviation-grade reliability into every detail — the ideal choice for long-endurance UAVs and high-performance vehicles.”