The new KDE Direct XF Generation 3 Series High-Performance Brushless Motors are designed to push the

boundaries of technology and bring a whole new level of flight performance to the world of single-rotor and

UAS applications. In this regard, choosing the appropriate gearing to reach optimal boundaries of flight

performance is critical for proper operation, maximum efficiency, and ideal running temperatures.

The gearing details listed in this document are recommendations provided by dynamometer and in-flight

testing with KDE Direct Electronic Speed Controllers (ESCs). The XF Gen3 Series of Brushless Motors have

been optimized to run smoothly and efficientl y with the latest ESC technology, providing the ability to be

governed to power-levels and near-flawless control never before achieved. In addition to this document,

full specifications and technical details can be found on the KDE Direct website for continuous power and

current limitations, dimensional geometry, and other critical information.

All of the gearing recommendations listed in this document utilize the governor-mode algorithm of the

flight-controller or flybarless control unit; ideal for single-rotor flight operation and consistent headspeed

control (especially optimal for UAS applications). Please familiarize yourself with the proper installation,

operation, and programming of such devices before attempting to power the system and achieve flight.

KDE Direct is not responsible for the use of such products, or any damage or injuries caused as a result of its

usage. It is the responsibility of the owner to operate all models in a safe manner and KDE Direct assumes

no liability for the use of these products and recommendations.