DA 35 EFI UAV Engine is fit with state of the art electronic fuel injection.

A special magnet configuration mounts in the prop hub. It allows the prop to easily flip for no-fuss starting. A single 3 cell Lipo battery of 1500mah or larger capacity, powers the ECM. At full throttle, total power draw is only 12 watts (1 amp).

Customize the engine by selecting muffler and alternator options.

Alternator System Options

200W Power Management Unit

The system can be paired with a 200 W Power Management Unit. The PMU provides three lines with a chosen voltage in the range: 12 – 15 VDC at 15A or 200W max and 4.8 – 7 VDC at 7A or 42W max.

Configurable with LiIon, LiPo, LifePO4, SLA, NiCad, NiMH, and Lead Acid Battery.

24 V option available, contact HFE Int. for info and pricing.

400W Starter Alternator

This 3 phase brushless alternator drives direct on the engine crankshaft. The stator mounts to the crankshaft casing; the rotor spins on the crankshaft.

The system can be paired with a 500 W Power Management Unit with an integrated starter controller, allowing the engine to start remotely. The PMU provides three lines with a chosen voltage in the range: 24 – 28 VDC at 12.5A or 350W max, 12 – 15 VDC at 9A or 108W, and 4.8 – 8 VDC at 8A or 42W.

Configurable with LiIon, LiPo, LifePO4, SLA, NiCad, NiMH, and Lead Acid Battery.

Custom Alternator 

Custom alternator options are available upon request.

Contact HFE International to discuss your setup. 

DA 35 EFI UAV Engine Downloads

DA 35 EFI Data Sheet

DA 35 EFI Owner’s Manual

EFI Engine Owner’s Maual

System Testing

The DA 35 EFI UAV Engine has tested from sea level to 10,000 foot altitude and temperatures ranging from 32°F to 120°F.

About HFE International

HFE International develops and manufactures high end propulsion systems for UAV’s, drones, unmanned systems, and ground support equipment. These propulsion systems include fuel-injection and rotary systems with gasoline and multi/heavy fuel operation.

Founded in 2010, HFE continues to meet the demand for reliable, small engines at an affordable price point. With over 1,000 units sold – at 25% the cost of the closest competitor – HFE engines are in use throughout the world, including by the US Armed Forces.