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WARNING: This manual contains important information that will help you maintain and operate your model aircraft in a reliable and safe manner. Please read the instructions and warnings carefully prior to assembly, setup or use. As this model aircraft is a sophisticated hobby product, it must be flown with safety and common sense in mind, failure in doing so may result in injury or property damage.
About Model The 50mm L-39 can be seen as a stepping stone to introduce RC pilots into the field of jets. Jets are generally faster and harder to fly than most propeller-driven aircrafts, making them difficult for beginners, and sometimes even experienced pilots, to fly.
Model assembly Installation of the horizontal stabilizer and pushrod 1.Apply foam safe glue to the area of horizontal stabiliz- 2.With the servo centered, attach the pushrod er and rear fuselage shown in the figure, then slide the clevis to the elevator control horn. horizontal stabilizer to fuselage and fix in place.
Battery installation 1. Remove the battery hatch. 2. Remove the hook and loop tape from the fuselage. Apply the looped surface to the battery. 3. Install the battery into the fuselage- securing it with the preinstalled battery straps. Note: The dimension of the battery compartment is 160x40x40mm.
Control throws The suggested control throw setting for the 50mm L-39 are as follows (dual rate setting): Tips: The maiden flight should always be flown using low rates, fly the aircraft until you are famil-...
Control horn and servo arm settings More control throw Horns Arms 1. The table shows the factory settings for the control horns and servo arms. Fly the aircraft at the factory settings before making changes. Less control throw 2. After flying, you may choose to adjust the linkage positions for the desired control response.
Before flying the model Always turn your transmitter on first. Install a fully charged battery in the battery bay, then connect it to the ESC. In this process, make sure that the throttle cut functionality is on, and that the throttle stick is secured in its lowest position- other- wise, the propeller/fan will engage and possibly cause bodily harm.
Troubleshooting Problem Possible Cause Solution Lower throttle stick and throttle trim to lowest Aircraft will not respond to ESC is not armed. settings. the throttle but responds to Throttle channel is reversed. other controls. Reverse throttle channel on transmitter. Replace damaged parts. Damaged spinner, propeller, motor or motor mount.
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