DA 50 EFI UAV Engine by HFE International comes complete with state of the art electronic fuel injection. Special magnet configuration mounted in the prop hub allow for easy flipping of the prop for starting.

The ECM is powered by a single 3 cell Lipo battery of 1500mah or larger capacity. Total power draw is only 12 watts(1 amp) at full throttle.

The system is tested from sea level to 10,000 ft altitude and temperatures ranging from 10°F to 120°F.

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.

500W Starter Alternator

This 3 phrase brushless alternator direct drives on the engine crankshaft. The stator mounts to the crankshaft casing, with the rotor spinning 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 50 EFI UAV Engine Downloads

DA 50 EFI Data Sheet

EFI Engine Owner’s Manual

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, the company’s aim was to address the growing 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 use by the US Armed Forces.

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.

DA 70 EFI UAV Engine is fit with state of the art electronic fuel injection.

A special magnet configuration mounts in the prop hub and 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, the total power draw is only 12 watts (1 amp).

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.

500W 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 Alternators 

Custom options are available upon request.

Contact HFE International to discuss your setup. 

DA 70 EFI UAV Engine Downloads

DA 70 EFI Data Sheet

EFI Engine Owner’s Manual

DA 70 EFI Supplemental Owner’s Document

System Testing

The system is tested to numerous standards — from sea level to 10,000 foot altitude and temperatures ranging from 10°F to 120°F.

About HFE International

Founded in 2010, HFE International develops and manufactures high-end propulsion systems for UAVs, unmanned systems and ground support equipment. At a cost 25% less than the closest competitor, HFE meets the demand for small, reliable engines at an affordable price.

Over 1,000 HFE engines are in operation throughout the world — including use by the US Armed Forces. HFE propulsion systems include fuel-injection and rotary for gasoline and multi/heavy fuel operation.

DA 100 EFI UAV Engine comes with state of the art electronic fuel injection.

A special magnet configuration mounts in the prop hub and allows the prop to easily flip for a no-fuss start.

A single 3 cell Lipo battery of 1500mah or larger capacity powers the ECM. At full throttle, the total power draw is only 12 watts (1 amp).

Alternator System Options

400W Starter Alternator

This 3 phase brushless alternator direct drives 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 Alternators

Custom options are available upon request.

Contact HFE International to discuss your setup. 

DA 100 EFI UAV Engine Downloads

DA 100 EFI Data Sheet

EFI Engine Owner’s Manual

DA 100 EFI Supplemental Owner’s Document

System Testing

The system is tested to numerous standards — from sea level to 10,000 ft altitude and temperatures ranging from 10°F to 120°F.

DA 150 EFI UAV Engine comes with state of the art electronic fuel injection. The fuel injection provides the correct amount of fuel and spark advance during hi-performance 3D flights.

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).

Alternator System Options

500W Starter Alternator

This 3 phase brushless alternator direct drives 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 Alternators

Custom options are available upon request.

Contact HFE International to discuss your setup. 

DA 150 EFI UAV Engine Downloads

DA 150 EFI Data Sheet

EFI Engine Owner’s Manual

DA 150 Supplemental Owner’s Document

System Testing

This system has undergone numerous tests, including: from sea level to 10,000 ft altitude and temperatures ranging from 10°F to 120°F. 

About HFE International

Founded in 2010, HFE International develops and manufactures high-end propulsion systems for UAVs, unmanned systems and ground support equipment. At a cost 25% less than the closest competitor, HFE meets the demand for small, reliable engines at an affordable price.

Over 1,000 HFE engines are in operation throughout the world — including use by the US Armed Forces. HFE propulsion systems include fuel-injection and rotary for gasoline and multi/heavy fuel operation.

DA 120 EFI UAV Engine by HFE International comes complete with state of the art electronic fuel injection. The fuel injection provides operators the correct amount of fuel and spark advance during high performance flights.

Features a special magnet configuration mounted in the prop hub which allows for flipping of the prop for an easy start.

The ECM is powered by a single 3 cell Lipo battery of 1500mah or larger capacity. Total power draw is only 12 watts (1 amp) at full throttle.

The system is tested from sea level to 10,000 ft altitude and temperatures ranging from 10°F to 120°F.

Alternator System Options

Choose from the following alternator options, listed below. 

500W Starter Alternator

This 3 phase brushless alternator direct drives on the engine crankshaft. The stator mounts to the crankshaft casing, with the rotor spinning 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 Alternators 

Custom options are available upon request.

Contact HFE International to discuss your setup. 

DA 120 EFI UAV Engine Downloads

DA 120 EFI Data Sheet

EFI Engine Owner’s Manual

DA 120 Supplemental Owner’s Document

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, the company’s aim was to address the growing 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 use by the US Armed Forces.

DA 120 EFI MIL SPEC UAV Engine by HFE International comes complete with state-of-the-art electronic fuel injection.

The MIL SPEC version features a tried and true fuel injection system. With more than 67,000 flight hours, this system is operational on over 700 aircraft in various environments throughout the world.

Reliability

The system is tested to 20,000 foot altitude with temperatures ranging from -10°F to 120°F. 

This system followed the test methods under MIL-STD-810, testing out the majority of the laboratory methods available.

Alternator Options

500W Starter Alternator

This 3 phrase 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 Alternators

Custom options are available upon request.

Contact HFE International to discuss your setup.

DA 120 EFI Mil Spec UAV Engine Downloads 

DA 120 EFI Data Sheet

DA 120 EFI Mil Spec Owner’s Manual

DA 120 EFI MIL SPEC UAV Engine WOT Graph

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, the company’s aim was to address the growing 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 use by the US Armed Forces.