EME35AS Model Aircraft Engine: High-Performance Electrically Startable Two-Stroke Power System for UAV and RC Aircraft
The rapid growth of UAV technology and large-scale RC aircraft has increased demand for reliable, lightweight, and high-output gasoline engines. Among modern propulsion solutions for fixed-wing UAVs and RC aircraft, the EME35AS model aircraft engine electrically startable two-stroke engine has become a strong choice for pilots, UAV developers, and professional model aircraft enthusiasts seeking a balance between power, efficiency, reliability, and convenience.
Designed for demanding flight applications, the EME35AS combines traditional gasoline two-stroke engine performance with modern electric start technology, significantly simplifying operation while maintaining excellent thrust-to-weight characteristics. According to the manufacturer, the engine delivers up to 3.6 HP at 7100 RPM while maintaining a lightweight structure suitable for various fixed-wing UAV and RC airplane platforms.
What Is the EME35AS Engine?
The EME35AS is a 35cc gasoline-powered two-stroke aircraft engine developed for:
- Fixed-wing UAVs
- RC airplanes
- Aerobatic aircraft
- UAV research platforms
- Long-range drone systems
- Large-scale model aircraft
- Experimental aerial platforms
Unlike smaller electric propulsion systems, gasoline-powered UAV engines provide longer endurance, greater operational range, and improved fuel efficiency during extended missions. The EME35AS is specifically engineered to support medium and large aircraft requiring stable thrust output and reliable long-duration operation.
One of its most notable features is the integrated electric start system, allowing users to start the engine using push-button ignition instead of manual hand-starting procedures.
Key Specifications of the EME35AS Engine
| Specification | Details |
|---|---|
| Engine Type | Two-Stroke Gasoline Engine |
| Displacement | 35cc |
| Output Power | 3.6 HP @ 7100 RPM |
| Idle Speed | 1550 RPM |
| Operating RPM Range | 1550–7500 RPM |
| Compression Ratio | 7.6 |
| Weight | Cylinder 960g |
| Exhaust Pipe Weight | 45g |
| Static Thrust (50–200m) | 9.0 kgf |
| Static Thrust (1800–2000m) | 8.1 kgf |
| Fuel Type | 93# Gasoline |
| Fuel Mixing Ratio | 1:30–1:35 |
| Ignition Power | 4.8V–6V Ni-Cd / Ni-MH Battery |
| Spark Plug | EME / NGK CM6 |
| Recommended Propellers | 18x10, 19x8–19x10 |
| Recommended RPM | 6500–7300 RPM |
These specifications place the EME35AS in the mid-sized gasoline UAV engine category, offering a strong combination of thrust, lightweight construction, and operational stability.
Advantages of a Two-Stroke UAV Engine
High Power-to-Weight Ratio
The EME35AS generates 3.6 horsepower while maintaining a relatively lightweight structure. This allows UAV platforms to:
- Carry larger payloads
- Improve climb performance
- Maintain higher cruise speeds
- Increase thrust efficiency
Simpler Mechanical Structure
Two-stroke engines use fewer moving parts than four-stroke engines, resulting in:
- Easier maintenance
- Lower mechanical complexity
- Reduced weight
- Faster throttle response
Strong Throttle Response
Fast and stable throttle response is essential for aerobatic flight, UAV takeoff, and mission-critical operations. The EME35AS provides a wide RPM range from 1550 to 7500 RPM, enabling flexible flight control.
Electric Start System Benefits
The EME35AS features an electrically startable system that replaces traditional manual starting methods.
Faster Operations
Electric start significantly reduces pre-flight preparation time, improving efficiency for UAV operators and field teams.
Improved Safety
Electric ignition reduces the need to manually handle the propeller during engine startup, lowering operational risk.
More Reliable Starting
Consistent electric ignition improves repeatability and operational stability across multiple flights.
UAV Applications for the EME35AS
Long-Endurance Fixed-Wing UAVs
Gasoline engines provide higher energy density than batteries, making them ideal for long-range UAV missions such as mapping and surveillance.
RC Aerobatic Aircraft
The engine is suitable for aerobatic and sport aircraft requiring fast throttle response and stable power output.
Industrial UAV Systems
Used in agriculture, forestry, inspection, and monitoring applications where long endurance is required.
Research and Education
Ideal for UAV laboratories and universities for propulsion testing, aerodynamics research, and flight system development.
Fuel Efficiency and Operation
The EME35AS operates on 93# gasoline with a recommended oil mixing ratio of 1:30–1:35, ensuring stable combustion and reliable engine lubrication.
- Stable combustion performance
- Efficient fuel usage
- Lower operational cost compared to frequent battery cycles
- Longer mission endurance
Recommended Propellers
- 18x10
- 19x8
- 19x10
Recommended operating range: 6500–7300 RPM. Proper propeller matching is essential for achieving optimal thrust, efficiency, and engine lifespan.
Altitude Performance
| Altitude | Static Thrust |
|---|---|
| 50–200m | 9.0 kgf |
| 1800–2000m | 8.1 kgf |
The engine maintains stable performance even at higher altitudes, making it suitable for mountainous and high-elevation UAV missions.
Maintenance and Durability
The EME35AS is designed with a robust structure and simplified maintenance requirements. Routine servicing includes spark plug checks, fuel system cleaning, and carburetor tuning.
- Robust mechanical structure
- Stable long-term performance
- Simple maintenance process
- Reliable field operation capability
Why Electric Start Matters in UAV Systems
Electric start systems improve automation potential and operational efficiency in modern UAV workflows.
- Supports autonomous UAV operations
- Enables remote engine startup
- Improves mission readiness
- Reduces manual intervention
Who Should Use the EME35AS?
- UAV developers
- RC aircraft enthusiasts
- Industrial drone operators
- Research institutions
- Mapping and surveying teams
- Aerobatic pilots
Final Thoughts
The EME35AS model aircraft engine electrically startable two-stroke engine offers a strong balance of power, efficiency, and modern usability. With its 35cc displacement, 3.6 HP output, and electric start system, it is well-suited for UAV and RC aircraft requiring reliable long-endurance propulsion.
As UAV applications continue expanding in industrial and research fields, gasoline-powered engines like the EME35AS remain essential for missions that demand long flight duration, high reliability, and strong payload capability.