ADX 250

Introducing the ADX 250 engine - the new twin-cylinder engine from ZDZ that's designed to offer the same unbeatable combination of power, reliability, and lightweight design as its big brother, the 500B4 MJOLNIR. With an identical design concept and construction to the 500B4, the ADX 250 packs all the same features into a smaller, twin-cylinder package that's perfect for UAV producers who need a smaller and more compact engine for their projects.

Featuring a super low vibration level, easy-to-cool design, and secured crankshaft, the ADX 250 delivers unparalleled reliability and durability, along with a great power/weight/price ratio. Plus, like its bigger sibling, the ADX 250 is highly modular and easily custom-modified, allowing you to add or modify additional sensor positions, customize the cylinder heads, and choose from three different generator types installed in front or on the backside of the engine.

And for those who value safety and reliability above all else, the DUAL SPARK PLUG version is also available for the ADX 250.

So, if you're looking for a powerful, lightweight, and reliable engine for your UAV project, don't settle for anything less than the new generation of CNC crankcase quad boxer engines from ZDZ, including the ADX 250 and its bigger brother, the 500B4 MJOLNIR. Upgrade today and experience a level of performance that's truly unmatched in the industry.

Displacement: 250ccm
Weight: 6070g, 7950grams with starter
Bore: 56mm
Stroke: 50mm
RPM range 1000-8500ot/min
Ignition:  Processor controlled 4,8-7V
Fuel mixture N95+rec. oil: 1:35
Recomm. twinblade props 34x16, 36x12, 36x14
Recomm threeblade props: 33x12, 33x14, 34x12

  1. Rotation Options: Our engines can be customized to operate in either a clockwise (CW) or counterclockwise (CCW) rotation. This provides flexibility to choose the rotation that best suits your specific system requirements.

  2. Exhaust system:  You can choose betwen standard SSA compact and direct mount systém or specific solution.

  3. Double Spark Plug Heads: Engines can be equipped with double spark plug heads to increase safety and reliability. This feature ensures that your engine continues to operate in the event of a spark plug failure, offering uninterrupted performance and peace of mind.

  4. Additional Sensor Mounting Position: Engines could be equipped with an additional sensor mounting position on either the cylinder heads or crankcase. This provides the flexibility to tailor the engine to your exact needs, allowing you to achieve optimal performance and functionality.

  5. Cylinder Head Redesign: Our engines can be completely redesigned to provide easier cooling or fit into your cowl space. This feature ensures that your engine not only performs at its best, but also fits seamlessly into your system.

  6. Electric Starter: Engines could be equipped with an electric starter for easy and efficient start-up. This feature saves time and effort, allowing you to focus on your work and get the job done quickly and efficiently.

  7. Automatic Deco Valves: Engines could be equipped with automatic deco valves, making restarts in the air easy and stress-free. This feature allows you to focus on your flight and enjoy a smoother and more comfortable experience.

  8. Power Generator: Engines can be designed with brushless generators that provide superior power to meet your specific needs. This feature ensures that you have the power you need to operate all of your equipment, no matter what the situation.

  9. Custom-Made Backplate: Engines could be designed with a custom-made backplate that offers a mounting point and design tailored to your specific needs. This feature ensures that your engine fits seamlessly into your system, providing optimal performance and functionality.

  10. Electronic Fuel Injection: Engines could be equipped with electronic fuel injection for improved efficiency and performance. This feature ensures that you get the most out of your engine, with increased fuel economy and power.