U.S UAV Engines

Request a Quote

ADX 140

ADX 140 Engine – Power and Customization for UAV Innovators

At U.S. UAV Engines, we understand that no two UAV systems are alike. That’s why the ADX 140 engine is engineered for flexibility, giving UAV manufacturers the freedom to customize to their exact requirements.

Built with precision in mind, the ADX 140 features a fully CNC-machined crankcase and backplate made from high-strength 7075 aluminum alloy—offering durability and reliability in the most demanding conditions. The backplate can be customized to match your unique installation and configuration needs, giving you total control over system integration.

Whether your UAV requires a pusher or tractor configuration, the ADX 140 supports both clockwise (CW) and counterclockwise (CCW) rotation setups—providing the adaptability your designs demand.

This engine stands out with its advanced combustion chamber design and optimal spark plug placement, delivering outstanding power and top-tier performance. Separate cylinder heads allow for personalized sensor mounting solutions, while other custom options include enlarged cooling surfaces and a dual-spark plug system for increased redundancy and operational safety.

With robust cylinder head gasket technology and a rotary valve intake system, the ADX 140 offers extended lifespan, reliable timing control, and smooth, low-vibration operation—ensuring a refined and dependable flight experience.

Elevate your UAV platform with the unmatched performance, precision, and customization of the ADX 140 from U.S. UAV Engines.

Displacement: 140ccm
Weight: 2500g without ignition
RPM range: 1000-8500RPM
Ignition: Processor. Controlled 4,8-7V
Fuel mixture N95+rec.oil: 1:35
Recomm twin blade props: 28×12, 29×9,29×10, 30×10
Recomm. three blade props: 27×10/9

  1. Rotation Options: Our engines are available with customizable rotation—choose between clockwise (CW) or counterclockwise (CCW) configurations. This flexibility allows seamless adaptation to your propulsion system layout and aerodynamic requirements.
  2. Exhaust System: We offer two primary exhaust configurations. Standard SSA Compact or Direct Mount System. Additionally, we can engineer custom exhaust solutions to meet your specific spatial or thermal management needs.
  3. Double Spark Plug Heads: For enhanced safety and redundancy, our engines can be equipped with double spark plug heads. This ensures continued engine operation even in the event of a spark plug failure—ideal for mission-critical UAV operations.
  4. Additional Sensor Mounting Positions: We provide optional sensor mounting positions on the cylinder heads or crankcase, offering flexibility to integrate additional telemetry or monitoring systems tailored to your application.
  5. Cylinder Head Redesign: Our team can completely redesign cylinder heads to improve cooling efficiency or to ensure the engine fits within your custom cowl space—perfect for specialized airframe integration.
  6. Electric Starter: Optional electric starters enable quick and effortless engine start-ups, saving time and minimizing ground operation complexity.
  7. Automatic Deco Valves: For improved airborne restart capabilities, engines can be fitted with automatic decompression (deco) valves, making mid-air restarts more reliable and user-friendly.
  8. Integrated Power Generator: We offer engines with integrated brushless power generators, ensuring high-efficiency power output to support onboard electronics, payloads, and other mission systems.
  9. Custom-Made Backplates: We can design custom backplates that provide optimized mounting solutions and are tailored to fit the structural requirements of your UAV platform.
  10. Electronic Fuel Injection (EFI): Upgrade to electronic fuel injection for superior fuel efficiency, performance consistency, and altitude adaptability, ensuring top-tier engine behavior across varying environmental conditions.

Gallery

ADX 140 with starter, standard heads
ADX 140 with starter, extended heads
ADX 140 with starter, extended heads
ADX 140 with starter, backside, standard heads