This is the EX 123 - Engine with EFI

The ultra reliable GP 123cc is now available in an EFI version, suitable for R/C and UAV applications. Units can be with or without a starter / alternator included too. Contact us for more information or detailed specs.

SFC Report, Power and Torque information is available on request

at AerobatX we not only have the biggest stock of spares in Europe, but we also have the expertise to match and offer a full Factory Authorised, UK based service centre

Download the Engine info and Manual here - GP 123cc Engine Manual, dimensions and Drilling template

Download the EFI Unit spec sheets here - EX EFI information sheet

EX123 EFI UAV Engine

Lead Time	8 weeks
Displacement	123cc
Power	12HP
Weight (engine with intake)	2300g
Weight (ECU)	150g
Weight (Fuel Pump)	140g
RPM Range without starter-alternator	1500-8900
RPM Range with starter-alternator	2000-7500
ECU Voltage	16.8-28V
Power Draw	44.2W
Temperature Range	230
Weight (500W Alternator System)	1045g
Weight (muffler)	330g
Starter-Alternator configurable Battery	LiPo
Recommended Propeller	27×12, 28×10, 28×12

Starter Alternator

It integrates the engine start and power generation into a single control solution, with reliable and simplified installation to reduce the complexity of system maintenance. The compact design is more suitable for space-constrained UAVs. Multiple models cover various engine systems from 20cc to 150cc, and two output types of DC 24V 150W or DC 48V 330W are available.

EFI Systems

Our Multi-Fuel Electronic Fuel Control System is designed specifically for UAVs with two-stroke and four-stroke engine applications. It eliminates the need for a large number of sensors by incorporating intelligent computation, electronic fuel pump, and optimized air-fuel mixing intake. This system seamlessly upgrades the fuel control from carburetors to electronic active fuel injection, providing a sophisticated solution.

The built-in intelligent computation adjusts fuel mixture smartly according to the engine’s operational environment, ensuring greater stability across various conditions. Whether in summer or winter, at sea level or at 6000 meters altitude, our professional calibration empowers you to effortlessly manage these situations, bidding farewell to the intricate adjustments of carburetor needles.

Tailored for UAV applications, the system is lightweight with high precision components, weighing only 330g for the entire setup. The compact design relieves traditional carburetor users from concerns about sensor placement and weight, ushering in a new era of hassle-free upgrades.