To facilitate the selection of the most suitable configuration, we bring you a basic division into the electrical part of the propulsion and then the fuel part. Individual fuel systems and electrical systems can be combined.

ROTOmotor Ltd., Czech Republic - Europe CONFIGURATION SHEET
Top four-stroke engine tailored to your project 

In the following diagrams, you can choose the best configuration for your project and thus avoid a mistake in the project.
Please follow carefully the paths of the possible configurations for both the electric and fuel side. For more information, link to the data sheets for each option.
Start generator 1000W Fuel system
Generator 300W 600W
The lifetime of the engine can vary greatly in your project, please always keep in mind that we will try everything for the best of set the Roto drive unit exactly for your project and get the most efficient economic solution.

TBO..................... 200 / 100 Hours
Displacement.......... 79,5 ccm
Power................... 3,4 kW
Engine weight.......... 3260g
Ignition weight......... 190g
Fuel consumption..... 400-920 g/h
Ignition:................. Electronic 4-14V
Cooling:................. Air Cooled
Lubrication:............. Petrol 95 oct. + 2% oil
Speed:.................. 1200 – 6500 rpm
Carburetor
Electric Electronic Fuel Injection system
Start generator 1000W Fuel system
ROTO 35 FS UAV
Carburetor
Electronic Fuel Injection
Electric system
Fuel system
ROTO 85 FS UAV
2000W 1000W Generator300W 600W 600W 2000W 300W Generator Start  generator
ROTOmotor 
Top four-stroke engine tailored to your project 
Recommended airplanes models
Up to 3.6 m
Up to 20 kg
Recommended propeller
2 BLADE: 25-26/10
3 BLADE: 24/10-12

TBO..................... 200 / 100 Hours
Displacement.......... 125 ccm
Power................... 5,3 kW
Engine weight.......... 4140g
Ignition weight......... 170g
Fuel consumption..... 400-920 g/h
Ignition:................. Electronic 4-14V
Cooling:................. Air Cooled
Lubrication:............. Petrol 95 oct. + 2% oil
Speed:.................. 1200 – 6500 rpm
TBO..................... 200 / 100 Hours
Displacement.......... 162 ccm
Power................... 6,2 kW
Engine weight.......... 5050g
Ignition weight......... 370g
Fuel consumption..... 400-920 g/h
Ignition:................. Electronic 4-14V
Cooling:................. Air Cooled
Lubrication:............. Petrol 95 oct. + 2% oil
Speed:.................. 1200 – 6500 rpm
600W 2000W 300W
Carburetor
Electric Electronic Fuel Injection system
ROTO 125 FS UAV Start 2000W generator
Fuel system
Generator 600W 2000W 300W
Carburetor
Electric Electronic Fuel Injection system
ROTO 170 FS UAV Start 1000W generator
Fuel system
Generator

Recommended airplanes models
Up to 4 m
Up to 25 kg
Recommended propeller
2 BLADE: 28-29/10
3 BLADE: 25-26/10Start generators under the trademark „STG Roto“ 1000W and 2000W.
All types are designed for maximum performance and efficiency. STG Roto start generators cooperate exclusively with the E-Control control unit, electronic system designed to control the engine generator, which allows the remote start of the internal combustion engine, charging batteries and hybrid operation, increasing the power of the internal combustion engine (Hybrid system).
Roto start generator & E-control ROTO E-control Generators under the trademark „AL Roto“ in range 300 up to 2000W.
Power generator has been developed with Roto regulators that can provide a stabilized voltage of 3.3V-60V. These generators do not have the ability to remotely start the internal combustion engine. Their advantage is that they provide high power in a stabilized voltage energy suitable for direct power consumption on board your project.
Regulator features developed for the distribution of stabilized voltage in the range from 3.5VDC - 50.0 VDC and current outputs up to 25 A.T
The outputs can be two and are fully stabilized at 300-2000W. Roto controllers are housed in aluminum boxes for shielding and perfect cooling.
For cooling with higher currents, integrated cooling fans are used, which prevent
power limitation at higher energy consumption.