Durafly Curtiss P-40N User manual

The Curtiss
Please read this manual carefully
before operating this plane.
Instruction Manual

Read this instruction manual fully so as to become completely familiar with the features of this
product before operating. Failure to operate this product correctly could result in damage to the
product, personal property and cause serious injury. This is a sophisticated hobby product and
is NOT a toy. It must always be operated with caution, common sense and some basic
mechanical ability. This manual provides instructions as the the assembly, safe operation and
maintainence of this hobby product. It is highly reccommneded that you follow and read fully the
instructions and warnings stated in this manual including safety, assembly, set-up and flying
guidelines in order to operate this product correctly and avoid damage or serious injury.
As the user of this product you and you alone are responsible for operating it in a manner that
does not endanger yourself and others around you or result in damage to the product orproperty
of others. This product is operated via a radio controlled system that in some cases can be
subject to interference from sources outside of your control. Interference may result in a
momentary loss of control so it is always recommended that this product be used in a suitably
open outdoors space.
- This is a radio controlled flying model and as such must always be flown with caution and
care. This is not a toy.
- The P-40 is designed for intermediate to advanced pilots.
- Alway exercise great caution when using the recommended battery to power this product.
For full safety notes and operating procedures, please see information provided by your
battery supplier.
- Take great care when connecting/disconnecting the battery. See battery supplier for full
safety procedures.
- Never power up the model in confined spaces and always keep the prop clear of
obstructions.
- This product is not a toy. Children must be accompanied by an adult at all times if operating
this product.
- Only fly this model in an open area away from crowds, people, buildings, tree's, power lines
and obstructions.
- Always put safety first when operating this model and consider the warnings stated above.
- The supplier/manufacturer accepts no responsibility for damage or injury caused through the
use of the product. Not suitable for children under the age of 14. THIS IS NOT A TOY.

CONTENTS
Introduction
Specifications
Contents Of Box
Required To Complete Model
Assembly
Setting Up Your Model
CG and battery placement
1
1
2
2
3-9
10-12
12-13
Model Flying Precautions
Pre-flight Checks
14
14
Flying Your P-40N
P-40N General Tips
Spare Parts Listing
Decal Application Guidelines
Decal Tips
15
16
17
17-18
18
American USAAF Markings
British RAF Markings
Soviet Air Force Markings
Dutch NEIAF Markings
Australian RAAF Markings
Propeller Decals
19-21
22-24
25-27
28-30
31-33
34
Trouble Shooting 35

1
SPECIFICATION
Wingspan:1100mm (43.3”)
Flying weight:1300/1400g (45/49oz) 3/4 cell
Length:1000mm (39.3”)
Servos:7 x 9g type (2 aileron, 2 flap, elevator, rudder, bomb system)
Motor: Durafly 3536 900Kv brushless outrunner
ESC: Durafly 45amp
Battery: 2200mah 3S 60-65C or 2200mah 4S 25-30C
Channels: 6-7 required (7 if using included bomb system)
INTRODUCTION
The Curtiss P-40 was one of the most widely used fighters of WW2, seeing more combat in more
theaters globally than any other fighter from either side of the conflict. The later 'N' model was
considered by pilots to be the finest version of this versatile aircraft, and seeing as Durafly makes the
best EPO warbirds out there, what could be better than a P-40N from Durafly.
The Durafly P-40N captures beautifully not only the classic lines of this much loved (though often
over shadowed) fighter, but with the multiple national markings provided in the box, it pays homage
to the many airman of the many nations under which it served valiantly in WW2. This P-40N sets a
new standard for Durafly both in terms of finish close up on the ground and truly warbird like
performance in the air. Boasting a whole host of unique features that include: 100 degree metal
trunnion twist and turn retracts for rock solid ground handling, super smooth paint and surface finish
with fine scale panel lines, and for the first time with a Durafly 1100mm warbird, a power train suitable
for both 3 and 4S set-up’s with no modifications required.
Durafly is proud to bring you this P-40N and we're confident you'll share that pride both when on the
ground, and in the air.

In its ‘Plug n Fly’ format the Durafly P-40N requires some additional electronic components to get it
flight ready. Durafly recommends the products below for optimum performance and great value.
Available at hobbyking.com
REQUIRED TO COMPLETE MODEL
OrangeRx R720X 7ch 2.4Ghz
Receiver
Part No. R720X
2
1
3
456
7
8
9
2
CONTENTS OF BOX
10
1. Main Wing
2. Fuselage
3. Horizontal Tail Set
4. Plastic Scale Parts
5. Spinner
6. Bomb
7. Propeller Blades
8. Decal Sets
9. Accessories Set
10. Manual
Turnigy A-SPEC 2200mAh
3S 65C Lipo:
Part No. 9472000003-0
OrangeRx T-SIX 2.4GHz 6CH
Programmable Tx:
Part No. 9403000001 Mode 1
9403000001 Mode 2
Zippy Compact 2200mAh
4S 25C Lipo:
Part No. ZC.2200.4S.25

ASSEMBLY
1. Out of the box your P-40N comes with reinforced foam hinges. However before assembly can begin,
each hinge line must be flexed back and forth 5-6 times to reduce tension, and load on the servo.
Do this for all control surfaces before continuing.
NOTE: Your P-40N comes with a selection of scale decals/markings to choose from.
Application of these decals is highly recommended BEFORE you begin assembly of the
model. Please refer to ‘Decal application’on pages 17-18 of this manual for illustrated
guides on how to apply each set.
2A. Locate both aileron and flap control horns, plates and push rods. Screw each horn in place as
shown below using the screws provided. Aileron horn screws pass through the aileron and screw
into the receiving horn plate. The flaps screws screw directly into the plastic of the flap.
2B. Raise each servos horn until at 90 degree’s to the wing and attach the push rods to the outer holes
of both servo and control horn. Adjust the plastic clevis on the rods until the ailerons are neutral
and the flaps are closed. Further adjustments can be made later during the ‘set-up’ stage of the
manual.
2x6mm
1.7x10mm
3

1.7x15mm
3. Repeat this process for the rudder and elevator control horns, ensuring the screws tighten firmly
into the control horn plate on the opposite side of each control surface.
1.7x15mm
4

2.6x6mm
4. Insert that carbon tail spar into one half of the horizontal tail and slide into the opening at the rear of
the fuselage ensuring the plastic screw tabs key fully into the fuselage sides. Repeat with the second
half and once aligned, screw firmly in place with the 3x8mm screws as shown. A little glue may be
applied at this stage for added security if desired.
5. Into the hole of the elevator joint, screw the single 2.6x6mm screw as shown to ensure the elevator
halves remain connected.
3x8mm
5

2.7x30mm 2.7x25mm
6. Attach the wing to the fuselage and ensure the servo wires from the wing pass through only the 3rd
hole from the rear of the plywood tray into the fuselage. This will ensure the wing sits correctly on the
fuselage. Once in place, screw the wing firmly down using the screws provided as shown below.
7. Push each of the propeller blades fully into the slots of the spinner back plate. Note that the
numbered sides of the blade face outwards. Secure each blade to the back plate using the 2.6x8mm
screws as shown. Check that the distance between each blade tip is equally. If not, loosen adjust
and tighten again.
6
2.6x8mm

3x50mm bolt
8. Slide the assembled back plate and blades onto the motor shaft ensuring the back plate keys
properly onto the base of the shaft. Fit the supplied washer then nut onto the shaft and tighten the
nut firmly to the shaft.
9. Position the spinner in place over the back plate and insert the 3x50mm bolt into the tip and tighten.
A small amount of medium thread lock can be used if desired for extra security.
7