Durafly T-28 TROJAN User manual

Please read this manual carefully
before operating this plane.
(PNF)
INSTRUCTION
MANUAL

CONTENTS
Introduction
Specifications
Contents Of Box
Required To Complete Model
Assembly
Setting Up Your Model
1
1
2
2
3-6
7-9
Model Flying Precautions
Pre-flight Checks
10
10
Flying Your T-28 Trojan
T-28 Trojan TIPS
Spare Parts Listing
11
12
13
Trouble Shooting 14
Contact
Notes
15
16

SPECIFICATION
- Wingspan:1100mm (43.3in)
- Length: 930mm (35.4in)
- Flying Weight:1460g (52oz)
- Controls: 7 Channel (Ail, Ele, Thro, Rud, Flap, Gear, Airbrake)
- Motor: Aerostar 3536 750Kv brushless outrunner.
- Prop: 10x6 3-Blade
- ESC: Aerostar 40amp
- Battery: 4S 14.8V 25C 2200mah 4S
- Channels: 7 Channel Tx and Rx
INTRODUCTION
Thank you for purchasing the Durafly T-28 Trojan. This airplane was built based on the original
North American Aviation T-28 Trojan.
With the Durafly T-28 Trojan you can now experience what made this great model a classic. From
the perfectly captured outline to the super scale details. The T-28 Trojan uses environmentally safe
water-based paint, with retractable landing gear, LED Navigational Lighting sytem, under fuselage
air brake, and even the stickers are 100% the same as the original. Like all other Durafly models,
the T-28 Trojan also has all electronics pre-installed, all major components assembled for you, and
a full compliment of tools and accessories included. No glue is provided, since none is needed! The
T-28 Trojan screws together in just 6 easy steps, with multiple hatches allowing easy access to
internal electronics. We went one step further and included a wooden camera holder allowing you
to install your FPV equipment and experience the thrill of flying your T-28 Trojan in a whole different
way!
The Durafly T-28 Trojan, you deserve to have one.
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2
4. Propeller
5. Wood Camera Holder
6. Accessories Set
1. Fuselage
2. Main Wing
3. Horizontal tail
OrangeRX R620X
6Ch 2.4Ghz:
Part No. 9171000757-0
REQUIRED TO COMPLETE MODEL:
Turnigy 2200mAh
4S 14.4V 30C Lipo:
Part No. T2200.4S.30
OrangeRx T-SIX 2.4GHz 6CH
Programmable Tx:
Part No. 9403000001 Mode 1
9403000002 Mode 2
In its ‘Plug n Fly’ format the T-28 still 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
CONTENTS

ASSEMBLY
3
2. Install the horizontal tail to the fuselage as shown.
1. Locate the bag marked “Aileron” and “Flap”. Install aileron and flap control horns and rods for
each side of the wing as shown. Ensure the servo horn is at 90 degrees to the wing when installing
the rod.

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4. Locate the bag marked “Rudder” Install the control horns on the vertical tail. Connecting the pre
installed control rods to the outer hold of the control horn.
3. Locate the bag marked “Elevator”Install horizontal tail, control horns and rods with the supplied
bolts as shown. Ensure tail is firmly secured and aligned.
A.

Note: It is recommended that you balance the prop and spinner before
installing for optimum performance and efficiency.
5
6. The final stage of assembly is to mount propeller. Slide prop onto motor shaft, engaging molded
hex detail on back of propeller to hex fitting on prop shaft. Tighten prop nut to shaft firmly by hand.
5. Mount the wing to the fuselage with the supplied bolts. Make sure to feed servo wires into
passage to fuselage compartment, ensuring no wires are pinched in the wing saddle.

Congratulations, basic assembly of your T-28 Trojan is now complete.
Please perform a final check on all screws, bolts and components,
ensuring all are secure and firmly in place.
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Ailerons and Flaps Elevator Rudder
Elevator
10-20mm
10-20mm
10-18mm
10-18mm
50-60mm
12-18mm
12-18mm
Aileron
Rudder
3. The T-28 Trojan handles very well in flight warbird high speed handling, trainer-like low speed.
Before you fly your T-28 Trojan please follow the recommended settings below for optimum
handling and performance..
*Elevator ‘low rates’ 10mm ‘high rates’ 20mm in either direction from neutral.
*Rudder ‘low rates’ 10mm ‘high rates’ 18mm in either direction from neutral.
*Aileron ‘low rates’ 12mm ‘high rates’ 18mm in either direction from neutral.
SETTING UP YOUR MODEL:
1. With your receiver installed and all servos plugged into their corresponding channels, connect
the flight battery to the ESC to power up the electronics. With the model now armed, ensure all
servos are centered and all control surfaces are level. If not, adjust by turning the control clevises
by hand accordingly until the control surfaces are level as shown.
Note: For safety reasons, it is advised that this is done with the prop removed from the
model.
Control throws:
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8
4. Linear power delivery is important to optimal flight performance. Calibrate the ESC using the
instructions below when switching to a new transmiter.
A. Switch ON the transmitter and move throttle stick to 100%. (Full Throttle)
B. Connect flight battery pack and wait about 2 seconds.
C. The ESC will emit a ‘beep-beep’ tone meaning the high point of the throttle range has been set.
E. After the intialization tone from low throttle, regular throttle control is available.
D. After the tone is emitted, move the throttle stick back to low throttle. You will hear the regular
initialization beeps indicating the number of cells in the battery.
2. Check control surfaces for proper movement with applicable stick input. A reversed control could
lead to loss of control and damage to the model.

With assembly and set-up now complete, your Durafly T-28 Trojan
should now be ready for flight. However we recommend you read
and follow the advice given in the following pages of this
manual before flying your T-28 Trojan.
5. The center gravity (CG) for the T-28 Trojan is approximately 50-60mm from the leading edge of
the wing. Using the recommended Turnigy 4S 14.8V 2200mah LiPo, the correct CG can be
attained quite easily due to the ample battery space. If using larger capacity batteries, you may
need to shift the battery backwards more to attain the correct CG.
9
CG 50-60mm when measured from the
leading edge of the wing at the root.
Measure with the model inverted.
CG 50-60mm when measured from the
leading edge of the wing at the root.
Measure with the model inverted.
50-60mm

MODEL FLYING PRECAUTIONS
PRE-FLIGHT CHECKS
1. Always range check your model before any flight (especially when flying a new model for the first
time). Follow your radio manufacturers guidelines for performing this check.
2. Check all screw/bolts and mounting points are firmly secured, including control horns and
clevises.
3. Only fly with fully charged batteries (both in your radio and model). Failure to do so could result
in loss of control, damage to the model and/or persons/property around you. Check your
batteries are fully charged.
4. With the model powered up (Transmitter on first, then receiver/model) check that all surface are
free from damage/obstructions, moving in the correct directions and freely with stick input.
5. Inspect the model and prop for any damage that may have occurred during transit and listen for
any unusual sounds from the electronics when powered up. If in doubt, do not fly.
6. With the model held securely and the prop free of obstructions, increase the throttle just slightly
to confirm the rotations of the prop is correct. The model should want to pull straight forward with
throttle.
7. If this is your first flight with the model double check the C/G is at the correct position. If not adjust
battery position inside model accordingly.
8. If you are an inexperienced model pilot seek the help and assistance of an experienced pilot to
perform these final checks and to test fly the model for you.
● Select your flight area carefully. Always choose an open space that is unobstructed from trees
and buildings and away from crowed areas. Avoid flying in area’s with roads, electric/telephone
poles/wires and water near by or within close proximity to full size air traffic.
● Do not fly this model in poor weather. High winds, low visibility, inclement temperatures, rain and
storms are to be avoided.
● Never attempt to catch this model whilst in flight. Even a slow moving model can cause harm to
yourself and/other and risks damage to the model.
● This model is recommended for children no younger than 14 year old. All children, no matter what
age, should always be supervised by a capable and responsible adult when operating this model.
● Always unplug your model battery when not in use. Never leave the battery installed in the model.
● Remember to keep clear of the propeller at all times when your flight battery is connected.
● Before flying, always turn on your transmitter first then plug your flight battery into the model.
● After flying, always unplug your flight battery first then turn off your radio transmitter.
● Exercise caution when charging your batteries and follow in full your battery manufactures safety
guideline when doing so.
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Flying the T-28 Trojan
The Durafly T-28 Trojan not only looks good as the original, but flies just as well; capturing perfectly
those excellent flight qualities that established the it as such a popular RC sport model all those
years ago.
The T-28 Trojan requires no special flying considerations as it is such a well mannered sport model
suitable for both novice and experienced fliers alike. The model has a good range of speed and is
just as happy fling at low throttle as she is full throttle. At the lower end of the speed range the T-28
Trojan exhibits no bad stall tendencies and can be flown comfortably at half throttle if desired.
However, when you wish to experience the full flying capabilities of the T-28 Trojan, full throttle flying
is even more fun and all manner of sport aerobatic maneuvers are achievable with the model.
Thanks to the retractable landing gear, the T-28 Trojan handles very well on the ground and take off
is always very straight and controlled on either pavement or grass surfaces, plus the Trojan flys
better and faster after retracting the gear. With good acceleration and plenty of power, your T-28
Trojan will be airborne within a few feet with less than 3/4 throttle. Once in the air you’ll be rewarded
with an airframe that goes exactly where you point it, tracking very true in flight. If required, the T-28
can also be hand launched with ease at full throttle with nothing more than an over arm launch from
standing.
Flight times on the recommended 4S 14.8V 2200mah LiPo ranges from 6~9 minutes depending on
your throttle usage. With its low current draw, the power system is always barely warm to the touch
after each flight. When it is time to land, the Trojan is comfortable in either a power on, or power off
approach depending on your preference and circumstance. The model will glide power off remaining
comfortably in control in either situation all the way down.
Happy flying and thank you for choosing Durafly.

Thank you again for purchasing the Durafly T-28 Trojan. We hope
you’ll have many happy days of flying and look forward to bringing
you more Durafly models in the future.
Don’t forget, spare parts are available for this model,
please see the next page for details.
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T-28 Trojan TIPS
When handling the T-28 Trojan it is recommended that you do so only from the leading edge of the wing
to avoid wear to the edges of the fuselage. The T-28 Trojan by design has flat sides and hard edges
that are vulneralbe as painted EPO. Over time these edges can get worn down if handled so it is best
to avoid handling the T-28 by any surface other than the wing.
It is HIGHLY recommended to use a piece of foam or sponge behind the battery when installed in the
fuselage to keep the lipo from sliding backwards during flight.
For optimum flight performance and model longevity it is recommended that you always fly with a
balanced prop. This is especially true with the T-28 as a badly balanced prop can damage the electric
power system of this model. The supplied prop should be balanced, but it is alwasy good to check first.
If you replace the propeller with your own choice of prop, please be sure to balance it beforehand.
Flight packs of 25C discharge rate or higher are recommended for use in the T-28 to ensure the optimal
performance in flight and from the power system.
Keep all leads within the fuselage area as tidy as possible. Tidy wires not only look better, but also allow
for easier access to all internal components, better battery installation, increased airflow around
electronics and a reduction in potential electronic signal interference.
Inspect the propeller and mounting nut/bolts frequently, especially if you have suffered a hard landing
or the prop has been knocked. If the prop is in any way damaged, it must be replaced and any loose
fittings must be tightened.

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SPARE PARTS T-28 Trojan
Fuselage
9306000235-0
Part No:
Main Wing Set
9306000236-0
Part No:
Horizontal Tail
936000237-0
Part No:
9306000238-0
Cowl
Part No:
Propeller
9306000239-0
Part No:
9306000240-0
Motor
Part No:
Nose Gear Retract
9306000242-0
Part No:
9306000241-0
Part No:
Canopy
9306000243-0
Part No:
Main Gear Retract Set
Accesories Set
9306000244-0
Part No:
9306000245-0
Decal Set
Part No:
9306000246-0
Prop Adapter Set
Part No:

1. The battery is not fully charged.
2. Elevator servo is reversed.
3. CG too far backwards.
1. Charge the battery.
2. Change servo direction via Tx.
3. Move battery forwards.
1. Transmitter/Receiver batteries
are flat.
Problem Cause Solution
Motor does
not turn
1. Battery is not fully charged.
2. Transmitter battery low.
3. Motors not connected.
4. The motor is damaged.
5. Receiver is not bound to Tx.
6. ESC in set-up mode.
Control surfaces
not moving with
stick input
Model does not
fly straight
Model does not
climb well
Limited Radio
Range 1. charge/replace batteries.
Motor turns in
reverse direction 1. Motor/esc connection error 1. Swap around any 2 of the 3
ESC/motor wire connections
1. Charge the batteries.
2. Install a full charged battery.
3. Check for connection
between the ESC and motor.
4. Replace motor.
5. Consult Radio manual and
go through bind procedure
again.
6. Hold model and move
throttle to full position then
back down to idle.
1. The servo lead is connected
to Rx incorrectly.
2. The servo is damaged.
1. Make sure the servo leads
are connect properly.
2. Replace servo.
1. Control surfaces not centered.
2.
CoG is not in the correct position.
1. Adjust the trims on the
transmitter.
2. Re-position lipo as
suggested.
TROUBLE SHOOTING:
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If you wish to contact us directly please email:
-
www.durafly.com
www.facebook.com/durafly
www.youtube.com/hobbykinglive
www.hobbyking.com
[email protected]

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