


ROTO 35 FS UAV
Single-cylinder four-stroke engine, air-cooled, controlled by a CDI unit with a preset advance curve for smooth operation, designed for use in UAV projects. It is most sought after for V-TOL projects, where this engine is commonly used due to its acceptable weight, good performance, and especially low fuel consumption.
PROPERTIES
WEIGHT
Engine type
TBO
Capacity
Power
Cylinders
Configuration
Fuel metering unit
Ignition
Cooling
Lubrication
Speed
Height limit
Start generator
Generator
EPU
Regulator
Throttle control
ROTO 35 FS UAV
200 / 400 Hours if TBO is kept
34.3 ccm
2,3 kW
One
Single cylinder
EFI ROTO / carburetor WALBRO
Electronic 4-14V
Air Cooled
Petrol 95/98 oct. + 2% oil
1200 – 6500 rpm
5000 metres above sea level
550W
300W, 600W
Start-generator
E-CON 130
Servo high-voltage
Engine weight
Ignition weight
Startgenerator
Generator
E-CON
EFI main unit
EFI wiring
Exhause pipe
1720 g
160 g
450 g
430 - 650 g
150 g
190 g
120 g
60 g
UAV System
We will adapt to your UAV project and work with you to develop an engine that suits your requirements. The possibility of adjustments of the individual parts of the engine is our great advantage. Technical support throughout the development and operation of the power unit is a matter of course.

The ROTO 35 FS UAV engine is optimized for long-duration missions, providing high fuel efficiency and low carbon emissions. Features include:
Performance and Efficiency
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Throttle Control: High-voltage servo for precise throttle management
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Sensors: Includes 2x CHT sensors, 2x EGT sensors, and 1x RPM Hall sensor for accurate monitoring and control
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Starter Generator: Integrated starter generator ensures reliable engine starts and power management
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EFI System: The advanced EFI system ensures optimal fuel injection and engine performance even at high altitudes and varying operational conditions
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Throttle Control: High-voltage servo for precise throttle management

The ROTO 35 FS UAV engine comes equipped with the E-CON electronic control unit, providing:
Advanced Telemetry and Control
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Integrated Telemetry: Real-time monitoring of voltage, current, power, capacity, temperature, RPM, and energy usage
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Safety Features: Over-voltage, under-voltage, over-temperature, and motor-stall protections
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User Configuration: Adjustable parameters for current limiter, throttle input, acceleration, and more
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Firmware Updates: Easily updatable firmware via USB interface

Installation and Maintenance
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Mounting: The engine is designed for easy installation in UAV systems and includes options for customized setups
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Propeller: Suitable for both carbon and wooden propellers, optimized for operation between5500 - 6000 RPM
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Exhaust System: Features adjustable exhaust pipes for flexible installation and optimal performance
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Fuel and Lubrication: Requires lead-free petrol mixed with 2% Stihl HP Ultra Oil for long-term engine operation. Ethanol content should not exceed 5% to avoid engine damage