Evolution NX Helicopter Engine USER GUIDE ®
Introduction Congratulations on your purchase of the newest and one of the most technically advanced 2-stroke helicopter engines in the world. Whether you are new to the sport of model aviation or an experienced flyer, you will enjoy the features of the new Evolution® Engine’s NX Series Helicopter Engine. The Evolution NX Helicopter Engine is designed to be the most powerful in its class, extremely easy to start and operate, and provide years of enjoyable service.
Features 1. Fits common and popular helicopters on the market 2. Excellent operating and power characteristics 3. Offers new technology to the helicopter market Break-in It is not necessary to mount this engine on a test stand for break-in. However, the engine should be adjusted slightly on the rich setting for the first few flights to insure proper break-in. Always use a good quality fuel which contains 15-30% nitro methane and an oil content of 20-23% low viscosity oil.
Throttle Linkage Install the throttle linkage and servo as per the instructions in the helicopter kit manual. The following illustration is used as an example for the typical installation of the throttle arm and servo setup. Please note that we have included markings on the throttle arm side of the carb body and throttle barrel. These markings correspond to “full open, mid throttle, and fully closed carburetor positions.
Open, Full throttle Note: it may be necessary to reposition the throttle arm on the carburetor and to adjust the length of the throttle linkage slightly to achieve full open and closed positions of the carburetor. Refer to the helicopter manual for more detailed instructions. Starting the Evolution Engine Engine installed with fuel lines attached Fuel The Evolution Engine comes pre-run and adjusted from the factory.
Starting the Evolution Engine (cont.) Glow Plug The Evolution Engine comes with a specially designed “Super Plug” that prevents idle and transition flameouts. The plug’s unique shape directs incoming fuel/air mixture away from the plug element. When replacing the plug, be sure to replace it with another Hangar 9 Super Plug (HAN3006). Starting the Engine Step 1. Fill the tank with the above-mentioned 15% to 30% fuel. Step 2.
High Speed Needle Valve Low Speed Needle Valve
How to Tell if your Glow Plug is Bad The glow plugs on the market today are designed to provide good service to the user and may last a long time or a short time, all dependent upon the way you choose to operate your engine. Physical indications that you might need to change the glow plug are: 1. Twisted or mangled glow plug element (usually caused by too high a compression ratio). 2. Small “bumps” are attached to the glow plug element.
Trouble-Shooting Guide Engine Won’t Fire • Glow starter not charged - Charge glow starter • Glow plug burnt out - Replace glow plug • No fuel is getting to the carburetor - Check tank, fuel lines reversed • The starter is reversed - Reverse the polarity on the starter cables Engine Quits Repeatedly • Needles need adjusting - See adjustment procedure • Bad or old fuel - Replace with fresh fuel • Worn out glow plug - Replace with new HAN3006 super plug Engine Runs Inconsistently • Hole in fuel line -
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Cross-Reference List of Evolution NX Helicopter Part Numbers No.
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