50mm Viper Operating Manual
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. This product is not intended for use by children without direct adult supervision.
Introduction Simple is beautiful. Without any landing gear to deal with, the Arrows Hobby 50mm Viper is lightweight and streamlinedperfect for those with a tight flying field or budget! To minimize drag, increase flight time and guarantee the Viper’s precision flight characteristics, Arrows Hobby designed an innovative single-piece wing structure and horizontal stabilizer.
Model assembly Installation of the horizontal stabilizer and pushrod 1.Apply foam-safe CA to the highlighted areas shown below, then slide the horizontal stabilizer onto the fuselage. 2.With the servo centered, attach the pushrod clevis to the elevator control horn. Required Adhesives: Medium CA Installation of the main wing 1.Apply foam-safe CA to the highlighted areas shown below, then attach the winglets to the wing tips. 2.Attach the wing to the fuselage using the included screws. KA2.
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 weight of each battery may vary due to different manufacturing techniques. Move the battery fore or aft to achieve the optimal center of gravity.
Preflight check transmitter and model setup After assembly and prior to your first flight, make sure all control surfaces respond correctly to your transmitter by referring to the diagram below. Control throws The suggested control throw setting for the 50mm Viper are as follows (dual rate setting): Tips: The maiden flight should always be flown using low rates, fly the aircraft until you are familiar with its characteristics prior to trying high rates.
Control horn and servo arm settings 2. After flying, you may choose to adjust the linkage positions for the desired control response. More control throw Less control throw Ailerons 1. The table shows the factory settings for the control horns and servo arms. Fly the aircraft at the factory settings before making changes. Arms Elevator Horns Finding the center of gravity Finding the correct center of gravity is critical in ensuring that the aircraft performs in a stable and responsive manner.
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- otherwise, the propeller/fan will engage and possibly cause bodily harm. Note: Please refer to your transmitter manual that came with your radio control system to perform a ground range check.
Troubleshooting Problem Possible Cause Solution Aircraft will not respond to the throttle but responds to other controls. ESC is not armed. Throttle channel is reversed. Lower throttle stick and throttle trim to lowest settings. Reverse throttle channel on transmitter. Excessive vibration or propeller noise. Damaged spinner, propeller, motor or motor mount. Loose propeller and spinner parts. Propellor installed backwards. Replace damaged parts.
