AMXFLIGHT VIPER HPAT JET EPO PNP

Welcome to Amewi

Amewi Trade e.K. is a young, internationally active import and wholesale company in the field of RC model building and toys, based in Borchen near Paderborn. Our product range includes over 6,000 items. These primarily include remote-controlled car, helicopter, boat, and tank models, as well as a wide range of accessories and all necessary spare parts. Our distribution network comprises over 600 specialist and online retailers throughout Europe.

The company AMEWI Trade e.K. is purely a wholesale company. We exclusively sell our products to retailers. If you purchase AMEWI products as an end consumer, you enter into a contract with the retailer. Please always contact your dealer for warranty claims.

Specifications

Length: 652mm

Wingspan: 717mm

Flying Weight: approx. 330g

Kit Contents

• Fuselage, with motor, electronic speed controller and servos
• Clear canopy and cockpit
• Left / right wing panels with ailerons
• Left / right tail plane panels with elevators and vertical stabilizer
• Accessories
• 1 x 20A Brushless ESC (Electronic Speed Controller)

Assembly Instructions

Very little preparation work is required to get this model ready for flight. To operate your new model safely, it is important that you read all instructions and safety information before flying it for the first time. The illustrations in this manual show the model with factory-applied decals.

The Power System

The model is powered by a brushless outrunner motor and a ducted fan, both factory-installed on the PNP version. The motor is connected to the electronic speed controller (ESC), which is factory calibrated on the PNP version. You only need to charge the Li-Po battery according to the safety instructions and connect the battery to the electronic speed controller.

The Radio Control System

To fly the Viper, you will need a radio control system with at least four channels. 2.4GHz radio systems are recommended, similar to the unit included with our PNP version. The servos for the ailerons and elevators are factory-installed. The power for the receiver is drawn from the ESC's integrated BEC system. The electronic speed controller is located inside the fuselage, in front of the ducted fan.

Pre-flight System Check

To check the model's operating systems, first set the control surface servos to neutral by setting the trims to center and leaving the throttle stick and trim to the lowest position. When you wish to fly the model, always ensure the transmitter is "ON". Move the throttle stick to the "OFF" position. Then connect the battery to the ESC. To power down, disconnect the battery from the ESC first, and then switch off the transmitter.

Assembly Steps

Fig. 2 / Bild 2: Locate the push rods set.

Fig. 3 / Bild 3: Install the aileron control horn.

Fig. 4 / Bild 4: Connect the push rods to the aileron servo arm and control horn.

Fig. 5 / Bild 5: Apply glue to the servo fairing.

Fig. 6 / Bild 6: Install the servo fairing.

Fig. 7 / Bild 7: Locate the fuselage and nose cone.

Fig. 8 / Bild 8: The nose cone is held in place by magnets and can be lifted off.

Fig. 9 / Bild 9: Apply glue to the mounting area of the main wing.

Fig. 10 / Bild 10: Apply glue to the saddle (for wing mounting).

Fig. 11 / Bild 11: The photo shows the finished view after gluing the wings in place.

Fig. 12 / Bild 12: Apply glue to the horizontal stabilizer.

Fig. 13 / Bild 13: Apply glue to the tail end of the fuselage where the horizontal stabilizer sits.

Fig. 14 / Bild 14: The photo shows the finished view after gluing the horizontal stabilizers in place.

Fig. 15 / Bild 15: Apply glue to the Vertical Stabilizer.

Fig. 16 / Bild 16: Apply glue to the slot of where the vertical stabilizer sits.

Fig. 17 / Bild 17: The photo shows the finished view after gluing the vertical stabilizers in place.

Fig. 18 / Bild 18: Locate the elevator control horn.

Fig. 19 / Bild 19: Connect the push rods to the elevator servo arm and then to the elevator control horn.

Fig. 20 / Bild 20: The photo shows the finished view (of elevator assembly).

Fig. 21 / Bild 21: Connect the elevator push rods to the arm of the servo.

Fig. 22 / Bild 22: Connect the electronic speed controller and servos to the receiver. Refer to the radio instructions for the correct channel sockets and servo lead polarity.

Fig. 23 / Bild 23: Locate the battery and canopy. Charge the battery according to the safety instructions before installing.

Fig. 24 / Bild 24: Place the fully charged flight battery in the fuselage and connect it to the electronic speed controller (ensure the transmitter is "ON" first). The canopy is held in place by magnets and can be lifted off.

Fig. 25 / Bild 25: Congratulations, you have completed the assembly process. We hope you enjoy flying your new model!

Optional Parts (Ventral Fins)

Fig. 26 / Bild 26: Ventral fins are included. Cut apart for assembly as shown.

Fig. 27 / Bild 27: Ventral fins shown after being separated.

Fig. 28 / Bild 28: Glue the fins into the slots (glue not included).

Fig. 29 / Bild 29: Photo shows Ventral fins in attached position.

Parts List

Safety and Warnings

⚠️ General Safety:

• Failure to follow these operating instructions will void the warranty. We accept no liability for consequential damages! We accept no liability for material or personal damage caused by improper handling or failure to observe safety instructions!
• For safety and approval reasons (CE), unauthorized modification or alteration of the device is not permitted. Do not disassemble the model.
• Warning: Small parts. Risk of choking or injury from small parts.
• The product is not a toy and is not suitable for persons under 14 years of age.
• The product must not become damp or wet.

⚠️ Battery Information / Battery Disposal:

• Batteries / rechargeable batteries do not belong in children's hands.
• Batteries or rechargeable batteries may only be replaced by an adult. Never mix rechargeable batteries with dry batteries. Never mix fully charged with partially charged batteries. Never mix batteries of different capacities. Never attempt to charge dry batteries. Observe correct polarity.
• Defective batteries / rechargeable batteries must be disposed of properly (special waste). Never carry out the charging process unattended. If you have questions about charging times, read the operating manual or contact the manufacturer.

Disposal Information

Amewi Trade e.K. is registered with the WEEE Reg. No. DE93834722 at the Stiftung EAR and properly recycles all used electronic components. Electrical and electronic devices must not be disposed of in household waste. Dispose of the product at the end of its service life in accordance with applicable legal regulations. As an end consumer, you are legally obligated (Battery Ordinance) to return all used batteries and rechargeable batteries; disposal via household waste is prohibited! Batteries/rechargeable batteries containing hazardous substances are marked with the adjacent symbols, which indicate the prohibition of disposal via household waste. The additional designations for the relevant heavy metal are Cd=Cadmium, HG=Mercury, Pb=Lead (the designations are on batteries/rechargeable batteries, e.g., under the waste bin symbol shown on the left).

The RoHS marking confirms that the manufacturer has observed all limits during manufacturing.

Batteries marked with the recycling symbol can be disposed of in any old battery collection bin (at most supermarkets at the checkout). They must not be disposed of in residual or household waste.

Amewi Trade e.K. participates in the Dual System for sales packaging via the company Landbell AG. The packaging used is collected by partner companies (disposal companies) from private end consumers (households, yellow bag, yellow bin), sorted, and properly recycled. Participation in a dual system contributes to CO2 savings.

Flying Notes

Please read the sections entitled “Routine pre-flight checks” and “Flying the model” in the Safety Notes before attempting to fly the Viper for the first time.

Test Flying - Notes on flying the airplane

For the first flight, you should wait for a relatively calm day with no more than a gentle breeze. A good flying site is a large, flat, open field; well away from trees, fences, high-tension overhead cables and other potentially dangerous obstacles. Carry out a complete check of the working systems. We recommend that you ask an experienced modeler to help you initially; to give the model a fairly powerful hand-launch.

The model must be launched directly into any existing wind. Switch the motor on, and launch the airplane strongly into the wind, with the fuselage and wings leveled. Allow the Viper to fly straight and level initially; don't try to turn it when it is close to the ground.

Adjust the trims if necessary so that the model settles into a steady climb. Check the model's response to control commands from the transmitter. You may need to increase or reduce the control surface travels once the model is back on the ground.

Take the airplane up to a safe height and check its stalling speed. Keep the speed well up on the landing approach to avoid stalling. If you had to move the trims during the flight, correct the mechanical linkages before flying again. This allows you to re-center the trims, so that full trim travel is available for subsequent flights.

We reserve the right to introduce technical modifications and suggest that you check our website for updates.

amewi.com

Checking Control Surfaces (Ailerons and Elevators)

Fig. 32 & 33 / Bild 32 & 33:

• Check that the control surfaces respond to the appropriate movements of the transmitter joysticks. If not, swap over the servo lead at the receiver.
• Check the neutral position of the control surfaces; you may need to screw the clevises in or out to correct any discrepancy.
• Stand behind the model.
• Check the direction of rotation of the servos:
  • Move the aileron stick to the right (a), and the right aileron (a) must rise up, the left aileron (b) fall down.
  • Pull the elevator stick back towards you (c), and the trailing edge of both elevators should rise (c).
• If either function works in the wrong way, correct it using your transmitter's servo reverse switch for that channel.

Checking the Power System

Fig. 34 / Bild 34:

• Hold the model securely.
• Remove any loose objects such as cloths, tools, etc. from the area in front of the model, as they could easily be sucked into the ducted fan.
• Advance the throttle (stick forward): the motor should now run and you should feel a strong air flow rushing out from the tail end of the model.
• Move the throttle stick back to the “OFF” position.
• Disconnect the battery from the electronic speed controller and then switch the transmitter off.

Checking the Model's Balance

Fig. 35 / Bild 35:

• Place the battery in its compartment without connecting.
• Mark the Centre of Gravity (CG) on both sides of the fuselage; the position is shown in the photo.
• Support the model at the marked points and allow it to hang freely. When correctly balanced, the airplane will remain horizontal with the nose slightly down.
• If necessary, adjust the position of the flight battery to achieve the correct CG.
• Mark the battery location in the fuselage, so that you can be sure of positioning it correctly after recharging.
• Pack scrap pieces of foam around the battery in its final position, otherwise there is a danger of it shifting in flight and altering the model's balance.
• Charge the flight battery and the model is ready for flight.

Access to Ducted Fan Unit and Electronic Speed Controller

Fig. 36 / Bild 36:

• The ducted fan unit is accessible from underneath, if you need to carry out maintenance work or repairs.
• Ensure that the wire colors match correctly. If the motor rotation direction is incorrect, swap two poles between the motor and ESC. The rotation direction will change.

Technical Data / Settings

The following Dual Rate and Expo settings are suggestions and should be adjusted according to your preferences. The control horns on the respective control surfaces can also be used to increase or decrease maneuverability. If the control linkage is attached further inside on the control horn, the model becomes more maneuverable; further outside makes it more docile.

After making changes to the model (control linkage), the model must be re-trimmed in flight.

We reserve the right to make technical changes and recommend checking our website for updates.

• 1: Dual Rate* Aileron / Elevator 75% / Expo** 45% (gentle flight)
• 2: Dual Rate* Aileron / Elevator 85% / Expo** 45% (dynamic aerobatics)
• 3: Dual Rate* Aileron / Elevator 100% / Expo** 45% (high maneuverability)

* Dual Rate = Electronic servo travel limitation (controls the maximum servo deflections).

** Expo = The servo's control curve is flatter around the center position (e.g., a higher Expo value makes the model more docile, a lower Expo value makes the model more agile).