(PNF) Instruction Manual
CONTENTS Introduction 1 Specifications 1 Content 2 Required to complete model 2 Required for Optional FPV Canopy 2 Assembly 3-5 Setting up the model 6-8 EFXTRA Optional parts 8-10 Model flying precautions 10-11 Pre-flight checks 11-12 Flying the EFXTRA 12-13 EFXTRA tips 14 Spare parts listing 15 Trouble shooting 16 Contact 17 Notes 17-18
INTRODUCTION: Thank you for purchasing this EFXTRA from Durafly. The EFXTRA have been designed from the ground up to offer the speed (110mph) and strength normally reserved for high end full composite models together with the agility and stability you’d expect from any good sports model. In addition to this you of course get the convenience, quality and uniqueness only an EPO model from Durafly can offer.
CONTENT: 1 2 9 10 4 3 5 7 1. Wing 2. Fuselage 3. Horizontal stabilizer 4. Propellers (4S 7x6.5 & 3S 8x6) 5. Aluminuim Spinner 8 6 6. Control and mounting accessories 7. Aileron covers and fusealage scratch plate 8. Slope nose cone. 9. FPV mounting tray 10. FPV canopy REQUIRED TO COMPLETE MODEL: In the ‘PnF’ format the EFXTRA will still require some additional electronic components to be ready for flight. Durafly recommends the products below for optimum performance and great value.
ASSEMBLY : 1. Locate the two horizontal tail halves and slide the left hand tail firmly into the plastic housing at the rear of the fuselage as shown (A). Install the other half of the tail ensuring both pieces lock into one another by pushing both firmly together from the tips and center to ensure good firm fit (B). Use contact glue for extra security if desired. A. B. 2. Using a pair of pliers (ball link pliers ideally) connect the elevator and rudder push rod to the control horn as shown (A).
5. With the aileron now connected and centered, peel the paper backing off the bottom of the aileron covers and affix each cover squarely in place as shown. 6. Connect the supplied Y-lead to the aileron servos then mount the wing to the fuselage (A). Using the two 3x20mm bolts, screw the wing firmly to the fuselage ensure no servo wires or ESC wires caught between the wing and fuselage as it closes (B). A. B. 3x20mm 7.
9. Install the spinner back plate on to the motor shaft ensuring the notches on the rear of the back plate align with the shafts base. Secure your supplied prop of choice (the black 7x6.5 for 4S, or the grey 8x6 for 3S) with the prop nut and then secure the spinner as shown below using the M3 bolt (3x10mm) provided. Note: Double check your prop is balanced before installing. An unbalanced prop can cause excess vibration and a loss in efficiency. 3x10mm Basic assembly of your EFXTRA is now complete.
SETTING UP YOUR MODEL: 1. Before getting started, bind your receiver to your transmitter. Please refers to your Transmitter Manual for the operation procedures. Make sure all the control sticks are in neutral position(Rudder, elevator andailerons) and the throttle in the OFF position. Turn on the transmitter make sure all the trims and the sub trims (For computerized TX) are in neutral position, and then power on the ESC for the control system testing.
3. The EFXTRA handles very well in flight but needs setting up beforehand. Please follow the recommended settings below for good all round performance. 6-10mm 8-14mm 6-10mm 8-14mm 50-55 12-16mm 12-16mm 6 10 8 14 12 16 4. The recommended center of gravity (CG) for the EFXTRA is approximately 50-55 mm from the leading edge of the wing. With either 3 or 4S installed and pushed as far forwards as possible, your EFXTRA should balance out at this point.
With assembly and set-up now complete your Durafly EFXTRA should now be ready for flight. However we recommend you read and follow the advice given in the later stages of this manual before flying your model. EFXTRA optional parts: Your EFXTRA comes with optional extra’s that really enhance the FUN factor of the EFXTRA. An FPV canopy for mounting your own FPV epquipment in and ripping up the race track and a slope nose cone to convert your powered EFXTRA into a silent slope speed machine.
FPV Canopy: High speed FPV flying opens up a whole new level of enjoyment with the EFXTRA, add the recommended FPV equipement to the provided FPV canopy and you have yourself a rock solid and 100mph plus FPV racer. Follow the below assembly stages and you’ll be expeiencing high speed FPV in no time. 1. Cut each plywood component from the framing and remove all tabs. Assemble parts as shown below, gluing together with CA (super) glue.
3. With all FPV components installed and secure on the FPV pod insert on fuselage in place of the battery hatch and ensure the canopy fits firmly and aligns as show below. To power your VTX, it is reccomended that you make up a power lead that can run from the balance tab of your lipo to the power port of the VTX.
PRE-FLIGHT CHECKS: 11
FLYING THE EFXTRA: Durafly’s EFXTRA delivers stunning looks and performance and go far beyond all expectations for a EPO model of this class, especially when in the air. Out of the box you have on offer 110mph+ performance if desired, yet very reassuring stability and handling at low speeds too. For this reason an EFXTRA can be flown by both intermediate and experienced pilots alike. If you are an intermediate pilot it is suggested you start with the supplied 8X6 prop and fly on a 3S 2200-2600mah lipo.
A true testament to the EFXTRA’s design however is its slow flying ability and how well it handles even without power. This is in no way more apparent than when landing. Though the EFXTRA does have a relatively high glide rate, it benefits from a very low stall speed, so you can comfortably increase elevator input at slow speeds without the risk of a stall. With the higher demand 4S set-up, flight times are typically 4-5 minutes with mixed throttle use.
EFXTRA tips: 1. If the stock set still isn’t given you enough speed, the stock motor in the EFXTRA is the perfect motor for 6S to give you 150mph+ HOWEVER, you will need to change the prop to a 5.5x5.5 and change the ESC for one rated at 80amps. With a 1500mah 6S, you can expect flight times of not more than 3mins, but what a 3mins that will be! 2. It is only recommend to hand launch the EFXTRA with an under arm launch.
Fuselage(Red): 9499000145-0 Fuselage(Blue): Fuselage(Green): 9499000166-0 9499000144-0 Hatch Cover(Red): Hatch Cover(Blue): 9499000148-0 Cowl(Red): 9499000150-0 9499000167-0 9499000146-0 Hatch Cover(Green): Horizontal Stab: 9499000147-0 Cowl(Blue): Main Wing Cowl(Green): 9499000027-0 Spinner set: 9499000168-0 9499000149-0 9499000151-0 FPV Canopy kit Motor X mount PVC covers: 9499000153-0 9499000154-0 9499000157-0 9499000032-0 Hardware: Sticker(Red): 9499000033-0 9499000156-0 949
battery. Motor not connected Motor does not turn 1. Prop installed backwards 16 1. Ask Bruce.
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