The HANG X HX-37 37cc 2-Stroke Petrol Engine is a compact, lightweight and high-performance engine designed for model aircraft and other suitable applications where a strong power-to-weight ratio is important.

With a 37cc single-cylinder, two-stroke design, the HX-37 produces up to 5 HP (3.73 kW) at 9,500 rpm. Its air-cooled construction, carburettor control and straightforward 2-stroke lubrication system make it a practical choice for pilots looking for dependable petrol power in a lightweight package.

The HX-37 weighs just 1,165 g for the main engine, while the manufacturer recommends propeller sizes of 19×10, 20×8 and 20×10. The engine uses a 45:1 (2T, FD) oil-to-fuel ratio and has a stated static thrust of 10 kg at 0 m altitude.

Key Features

• 37cc single-cylinder 2-stroke petrol engine
  
• Up to 5 HP (3.73 kW) at 9,500 rpm
  
• Lightweight 1,165 g main-engine weight
  
• Air-cooled design
  
• Carburettor-controlled fuel system
  
• 9.3:1 compression ratio
  
• 6V–14.4V ignition voltage
  
• 1,400 rpm idle speed
  
• 45:1 (2T, FD) oil ratio
  
• Recommended propellers: 19×10, 20×8 and 20×10
  
• 10 kg stated static thrust at 0 m altitude

Perfect For

• Large-scale RC model aircraft
  
• Petrol-powered model aircraft projects
  
• Pilots looking for a lightweight 37cc powerplant
  
• Aircraft builds where power-to-weight ratio is important
  
• Model aircraft requiring a compact single-cylinder 2-stroke engine

Product Summary

The HX-37 combines 37cc of displacement with a 5 HP output while keeping the main engine weight to approximately 1.165 kg. Its 2-stroke, air-cooled configuration provides a compact petrol power solution for suitable RC aircraft applications.

Specifications

• Brand: HANG X
  
• Model: HX-37
  
• Engine Type: 2-Stroke Petrol
  
• Displacement: 37cc
  
• Cylinder: Single Cylinder
  
• Control: Carburettor
  
• Cooling: Air Cooled
  
• Bore × Stroke: 38mm × 33mm
  
• Compression Ratio: 9.3:1
  
• Ignition Voltage: 6V–14.4V
  
• Idle Speed: 1,400 rpm
  
• Maximum Performance: 5 HP / 3.73 kW at 9,500 rpm
  
• Static Thrust: 10 kg at 0 m altitude
  
• Oil Ratio: 45:1 (2T, FD)
  
• Main Engine Weight: 1,165 g
  
• Recommended Propellers: 19×10, 20×8, 20×10

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