INSTRUCTIONS FOR DURAFLY ZEPHYR V-70 EDF-EPO
Warning: This aircraft is a hobby grade product, only for pilots of 14 years of age or above.
Please read and understand all instructions before operating.
Features of the Durafly Zephyr V70:
1) A Clean, efficient and low drag aerodynamic design that offers excellent high speed performance combined with outstanding aerobatic capability.
2)Large bilateralairintakesthat offer efficient fan operation combined with minimal drag .
3)Pre-Installed high thrust 70mm EDF unit with turbine like sound.
4)Ultra-thinairfoildesignfor both high speed performance, excellent glide performance and docile low speed handling.
5)Topspeedof around140km/h.
Product Specifications
Fuselage length: 1000mm ( 39.4 in.)
Wingspan: 1533mm ( 60.4 in.)
Flying Weight: 1050-1150g ( with battery )
EDF: 70mm
Motor: 2223 KV3400 Brushless Outrunner
ESC: 55 Amp w/BEC
Servo: 9g MG micro servo x 4
Radio：Min 4 Channel with V-Tail Mixing (not included)
Battery: 11.1V 3300~4000mah lipo (25c Min)
●Caution!
This is a high performance model which should be flown at appropriate sites only and away from the general public
Do not fly near high population area's
Do not fly near high voltage cables
Always disconnect Lipoly batteries after use
Please follow instructions and set up directions
Please ask an experienced pilot to assist with hand-launching this model on the maiden flight
Tools Required:
- Scissors, balsa knife, combination pliers, screwdriver. Med-Thick Cyano/Kicker
1.Applying the decals
Foam parts included in the packing:
1 Fuselage
2 Left wing
3 Right wing
4 Right Rudder
5 Left Rudder
6 EDF Fan Cover
Parts included in the packing
7 Canopy 1pc
8 Right servo arm protector 1pc
9 Left servo arm protector 1pc
10 Screw for EDF cover 1pc
11 Mounting screws for EDF cover 4pcs
12 CF Wing Tube
13 Aileron Control Rod 2pcs
14 Elevator/Rudder Control Rod type 1
15 Elevator/Rudder Control Rod type 2
16 Mounting screws for the wing 2pcs
17 Washers for the wing 2pcs
18 Washers for the EDF 2pcs
Assembly
1) Glue the V-Tail in place as shown.
2)Gluetheunderside of the V-Tail to the skid/support as shown.
3) Glue in the CF rod to one side of the wing as shown, make sure that the rod is only attached up to it's half-way point to ensure even lengths in both wings.
5)Installthemainwingtothebottomofthefuselagebyusingthemountingscrewsandwashersprovided.
6)Install the EDF in place onto the fuselage with 4pcs of mounting screws as shown in the picture.
7).
7) Place the cover of EDF and fasten it with care using the mounting screw.
8)Carefully glue in the aileron servo's after centering arms, attach control rod to aileron and center, tighten control rod adjusting screw and glue on cover, ensuring it does not foul the control rod/servo arm movement. Connect aileron servo leads to y-lead and tuck into slot in wing.
9)Glue in the V-Tail servo's as shown, attach servo extension leads and push into fuselage slot (you may use glue to retain once the model has been set up)
10) Install the servo arm and the control rods as shown in the picture , ensuring the control surfaces are perfectly centered.
11 Install receiver, ESC and battery (ensure all leads close to the fan are secured and can not be ingested), bind and set up model as per recommendations, check C of G and add small amount of nose-weight if required.
12 The canopy hooks in from the front and is secured by magnets at the rear.
Recommended Flying Setup
Max servo travel of aileron: 15mm~20mm up and down (low rates -25%)
Max servo travel of elevator: 10mm up and 10mm down (low rates -25%)
Max servo travel of rudder: 15mm up and 15mm down (low rates -25%)
Setting the correct control surface travels is important if you wish the model to respond to the control commands in a balanced manner.
The travels should always be measured at the widest part of the control surface.
If you do not have a computer radio, set throws mechanically by moving the servo control rods to different positions on the servo arm.
Please set your radio to V-TAIL wing for this model, correct orientation for V-TAIL is that the “rudders” are opposite to the aileron.
Setting the Center of Gravity
Like any other aircraft, the Zephyr must be balanced at a particular point in order to achieve stable flying characteristics. Assemble your model ready to fly, and install the flight battery.
The Center of Gravity (CG) should be set at a position of 75mm~80 mm from wing leading edge measured inverted.
Support the model at this position on two fingertips, and it should balance level. If not, you can move the flight battery forward or aft to correct the balance point. Once the correct position is found, mark the location of the flight pack inside the model to ensure that it is always replaced in the same position, depending on Lipoly size and C rating used, some additional nose-weight may be required.
Preparations for the first flight
Please wait for a day with as little breeze as possible for the model’s initial test-flight.
Be sure to carry out a range check before the first flight, using the procedure described in your RC system instructions. If you encounter a problem, please don’t risk aflight.
Hand-launching
Please don’t try unpowered test-glides with this model – the result is invariably a damaged airframe. The Zephyr V70 should be hand-launched with the motor running at full-throttle, and always pointing directly into wind.
Ask an experienced RC pilot to hand-launch your aircraft for you.
The launch should be straight, wings level, use the controls to hold the model in a steady, gentle climb - remember to keep the rate of ascent shallow and the airspeed high!
Allow the aeroplane to climb to a safe height, then adjust the trims on the transmitter until it flies in a perfectly straight line “hands off”. While the model is still at a safe altitude, throttle back and try out the controls on the glide. Carry out a “dry run” landing approach at a safe height so that you are prepared for the real landing. Keep the landing approach flat and avoid excess flaring, ensure that turns are kept minimal once in the glide for approach.
Safety
Safety is the First Commandment when flying any model aircraft.
Third party insurance should be considered a basic essential. If you join a model club suitable cover will usually be available. It is your personal responsibility to ensure that your insurance is adequate. Make it your job to keep your models and your radio control system in perfect order at all times. Check the correct charging procedure for the batteries you are using. Always fly with a responsible attitude.