ProBuild Aircraft Ltd are the original and longest-running Official UK Distributor and UK Service Centre for GP Engines, supplying genuine factory-direct products with full manufacturer support, expert technical advice and access to genuine GP spare parts and accessories.

The Great Power GP230 Twin Gas Engine is a high-power, twin-cylinder gasoline engine developed specifically for large-scale RC aircraft and professional UAV applications. With a total weight of just 5,973 grams, the GP230 delivers an exceptional balance between horsepower, efficiency, and structural strength.

Developed through more than two years of intensive R&D, validation, and long-duration testing, the GP230 has been engineered with a strong focus on thermal stability, reliability, and real-world operating conditions. Its advanced mechanical architecture ensures stable, predictable operation, even under sustained high-load and demanding environments.

Excellent thermal management, combined with low vibration levels and smooth running, allows the GP230 to maintain consistent performance across a wide RPM range. This makes it a dependable power solution for pilots and operators who demand long-term durability and dependable output.

Key Features

• High-performance 230cc twin-cylinder gasoline engine
  
• Optimised power-to-weight ratio at just 5,973 g
  
• Excellent thermal management for sustained high-load operation
  
• Smooth running with low vibration
  
• Stable and predictable performance under extreme conditions
  
• Designed for RC aircraft and professional UAV platforms
  
• Proven through extensive long-duration testing

Perfect For

• Large-scale RC aircraft
  
• Professional UAV platforms
  
• Long-duration flight operations
  
• High-load and high-temperature environments
  
• Pilots requiring reliable, consistent engine performance

Product Summary

The Great Power GP230 is a high-output, thermally stable twin gas engine built for demanding RC and UAV applications. With strong torque, smooth operation, and excellent temperature control, it offers dependable performance where reliability is critical.

Specifications

• Displacement: 230 cc
  
• Bore: 57 mm
  
• RPM Range: 1,200 – 6,700 RPM
  
• Output: 23 Horsepower
  
• Total Weight: 5,973 g
  
• Ignition Weight: 202 g
  
• Muffler Weight: 671 g
  
• Fuel Type: 92 Unleaded (95 used during testing)
  
• Gas/Oil Mix Ratio: 40:1
  
• Carburettor: Walbro WB-27
  
• Spark Plug: NGK CM-6
  
• Recommended Propellers: 33×13, 34×12, 31×12 (3-blade)
  
• Lowest RPM: 1,500
  
• Highest RPM: 6,700

Test Conditions:

• Model: GP-230
  
• Propeller: Falcon 34×12
  
• Testing Date: 30/04/2025
  
• Environmental Temperature: 30°C
  
• Environmental Humidity: 53%

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