PARKZONE T-28 Trojan Instruction Manual

T-28 Trojan

Instruction Manual

®

®

Charge-and-Fly™ Park Flyer

Wingspan: 44 in (1118mm)
Length: 36 in (914mm)
Weight (RTF): 30 oz (875 g)
Servos: Four 3-wire servos
Motor: PKZ 480 960Kv outrunner brushless motor
ESC: E-flite 25A brushless (EFLA1025)

2

3

Attaching the Wing

In order to attach the wing of your T-28, please follow
these simple instructions:

1. Locate the included wing securing screw.

2. Turn over the fuselage so you are looking at the
bottom. Do the same with the wing.

3. Route the aileron leads through the access hole in
the bottom of the fuselage.

4. Carefully align the two locator pins on the front of
the wing into the two small holes in the front of the
fuselage.

5. Slide the aileron leads inside the fuselage so that
they will not become pinched in between the wing
and the fuselage when securing the wing.

Congratulations on your purchase of the ParkZone

®

T-28 Trojan Plug-N-Play

®

airplane (PKZ4475). We
at ParkZone are committed to giving you the most
enjoyable flight experience possible. In order to have
a safe and successful flight, we ask that you do not fly
until you have read these instructions thoroughly.

This airplane comes almost fully assembled in order
to allow you to get in the air quickly. Your T-28 Trojan
Plug-N-Play (PNP

®

) already has the 3-wire servos, a
ParkZone 480 outrunner brushless motor, and an E-flite
Pro 25A brushless ESC installed. The decals have
already been applied, as well. You will only need
to add your own battery (a 3S 1800+mAh Li-Po is
recommended), as well as a receiver and transmitter.

Note: Although the airplane can function with a 4-channel radio system, we
suggest that you use a computer radio system with at least 6 channels so
you can use dual rates and make end-point adjustments. These features will
greatly add to the flying capabilities of the aircraft.

In as little as an hour, you can be ready for your first
flight with the T-28 Trojan PNP. This means you can
spend your time refining your flying skills, not your
building skills.

Warning

Although your ParkZone T-28 Trojan PNP comes almost
ready to fly, this aircraft is for experienced RC pilots
only and is not a toy! Misuse of the plane can cause
serious bodily harm and damage to property. Therefore,
only an experienced RC pilot should fly it.

Charging Your Flight Battery

We recommend that you choose either the 2200mAh
3S Li-Po (PKZ1030) or the ParkZone 1800mAh 3S
Li-Po (PKZ1031) to power your T-28 Trojan PNP. The
Li-Po battery must be charged with a charger that is
specifically designed to handle Li-Po batteries, such
as the ParkZone 2- to 3-cell Li-Po Charger (PKZ1040).
Regardless of the battery you choose, always follow the
charger and battery instructions in order to avoid any
damage to the battery, charger, property or yourself.

Warning

Failure to use the proper charger for a Li-Po battery
can result in serious damage, and if left charging long
enough, will cause a fire. ALWAYS use caution when
charging Li-Po batteries.

6. Slide the bottom of the leading edge of the wing
into the fuselage as shown, making certain it is
perfectly centered. This must be done correctly
in order to allow the screw to thread into the
fuselage. Once you are certain the wing is
centered, tighten the screw to secure the wing.

7. The wing is correctly installed when no gap exists
between the wing and fillet.

8. Gently pull up on the rear of the canopy hatch to
remove and set aside.

9. Connect the aileron leads to the pre-installed
Y-harness, noting proper orientation. The servo
leads are polarized to fit one way.

Step 2

Step 1

T-28 Trojan Plug-N-Play Instruction Manual

4

5

Attaching the Horizontal Stabilizer

1. Locate the horizontal stab of the tail.

2. Slide tail in allotted space of fuse, making sure
the control horn installed into the horizontal tail will
properly align with pushrod and clevis exiting the
back fuse.

3. When you are certain the tail is centered correctly
and in the right place, use the tape provided to
properly secure the tail to the fuselage as shown.
Use the tape on the top and bottom of each side of
the tail (total of 4 applications).

4. Turn on the transmitter and plug in flight battery.
Make sure trim levers are centered and the left
stick is in the full down position.

5. Locate the clevis and rod exiting the right side of
the fuselage, and attach the clevis to the control
surface as shown.

6. Make any trim adjustments as necessary prior to
flight (see step 7).

Note: To make trim adjustments to the horizontal
stabilizer:

a. Turn on radio transmitter

b. Plug in fully charged battery into fuse

c. Use the elevator trim of the radio by moving up or
down to center the tail at neutral when the gimbal is
also at neutral. If these changes are not sufficient,
center the transmitter elevator trim lever, then remove
the clevis from the control surface and turn clevis in
or out as needed to move the control surface back to
neutral.

Warning: Always keep hands and all objects away
from the propeller in case the motor is engaged.
A moving propeller can cause severe injury and/or
damage!

Step 4Step 3

Installing the Landing Gear

1. Install the main landing gear by inserting it into the
locator hole in the wing. Swivel the landing gear
toward the retaining clips and gently snap into
place.

2. Insert the nose gear into the steering assembly on
the underside of the cowl with the flat spot facing
forward.

3. Align the retaining screw with the flat spot on the
cowl. The retaining screw should be visible through
the front of the cowl.

4. Using a Phillips screwdriver, tighten the retaining
screw. The retaining screw should be accessible
through the front of the cowl, however, you may
choose to remove the cowl for easier access.

5. Reposition the T-28 so that it is resting on the
landing gear.

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7

4. Checking all functions to ensure proper setup.

Keep all body parts away from the propeller.
You can also make any trim adjustments to the
control surfaces at this time. Once you are
satisfied that the channels are functioning
correctly, you can turn off the radio system.

Install the receiver into the allotted space within the
fuselage. Make sure it is secure. Carefully route the
antenna (when applicable) so it exits the fuselage just
behind the canopy. It should then simply fall along the
fuselage and can be secured through the vertical stab.
When the antenna is routed correctly, it should hang
several inches (5”–7”) below the fuselage.

Your T-28 Trojan PNP comes out of the box with the
E-flite

®

25-amp brushless ESC. This controller has been
designed for use in radio control aircraft and is designed
to support motor currents up to 25 amps continuous,
and up to 4 micro servos with a 2- to 3-cell Li-Po
battery. It is suitable to use with most radio brands.The
E-flite 25A ESC comes in an impressive plastic case
with exposed, finned heat sinks for both of the motor
drive MOSFETs and, unlike many controllers, there is
also a finned heat sink fitted to the BEC regulators to
give a more reliable and more powerful power supply
to the servos. If you intend to fly your T-28 Trojan PNP
stock, then there is no need to program your ESC. It
comes installed with the default settings. If you intend to
re-program the ESC, we strongly recommend removing
the propeller first in order to keep it from spinning if the
motor is accidentally engaged.

Note: ALWAYS assume the motor and the propeller
are live. ALWAYS keep clear of the propeller at all
times. The high rpm of the brushless motor can
cause severe injury.

E-flite 25-Amp ESC Features:

• Two soft cut settings (for 2- and 3-cell Li-Po battery

packs)

• 70% Smart Cut feature

• Brake option

• Timing options for up to 4-pole inrunner and 4-pole

outrunner motors

• 2 setting options for the throttle input range

Using Your E-flite 25-Amp Brushless
Controller:

The E-flite 25A controller is very simple to use and,
for safety, will not arm the motor until the throttle stick
has been held in the Idle/Off position for more than
1 second. The controller will report the soft cut voltage
setting every time you plug in the battery by first
making a low, long beep to show startup. Then, it makes
2 or 3 medium length, mid-tone beeps to indicate the

cell count (or 7 beeps if 70% Smart Cut is selected),

helping you to check the setting before every flight. To
prepare for flight, you should first turn on your
transmitter and ensure the throttle is set to the Idle/Off
position. Next, plug in the flight pack to the speed
control and listen for the tones to indicate soft-cut
voltage. After the controller has indicated the cell count,
it will make one set of 3 medium length, rising tones
to tell you it is armed and ready to fly, or 2 sets of fast
rising tones if you are entering the programming mode.
For your own safety, and the safety of others, you
should always treat the motor and propeller as though
they are live and dangerous, remembering the motor
could start at any time. Keep any body parts, clothing
and tools clear of the propeller arc. Never leave the
battery connected when you are not flying the aircraft.
Always remove the battery pack from the model before
charging the battery, and when finished flying.

Step 5

Step 6

Installing the Receiver

Carefully plug in the servo leads into the corresponding
channels of the receiver you have chosen. The servo
plugs may have to be trimmed carefully with a hobby
knife if you are using a Spektrum

™

, JR® or HiTec radio

system in order to fit correctly into the receiver.
Confirm that the servo leads/plugs are in the correct

channel of the receiver. Do this by:

1. Turning on the transmitter.

2. Installing a charged flight battery.

3. Plugging flight battery into ESC.

Step 7

Installing the Propeller and Spinner

1. Slide propeller on. Make sure center of the pitch
numbers on prop are visible from the front of the
airplane.

2. Screw prop hub on. Inserting a hex driver through
the prop hub and tightening helps ensure the hub is
secure.

8

9

Warranty Period:

Exclusive Warranty- Horizon Hobby, Inc., (Horizon)
warranties that the Products purchased (the “Product”)
will be free from defects in materials and workmanship
at the date of purchase by the Purchaser.

Limited Warranty

(a) This warranty is limited to the original Purchaser
(“Purchaser”) and is not transferable. REPAIR OR
REPLACEMENT AS PROVIDED UNDER THIS WARRANTY
IS THE EXCLUSIVE REMEDY OF THE PURCHASER. This
warranty covers only those Products purchased from
an authorized Horizon dealer. Third party transactions
are not covered by this warranty. Proof of purchase is
required for warranty claims. Further, Horizon reserves
the right to change or modify this warranty without
notice and disclaims all other warranties, express or
implied.

(b) Limitations- HORIZON MAKES NO WARRANTY OR
REPRESENTATION, EXPRESS OR IMPLIED, ABOUT
NON-INFRINGEMENT, MERCHANTABILITY OR FITNESS
FOR A PARTICULAR PURPOSE OF THE PRODUCT.
THE PURCHASER ACKNOWLEDGES THAT THEY
ALONE HAVE DETERMINED THAT THE PRODUCT
WILL SUITABLY MEET THE REQUIREMENTS OF THE
PURCHASER’S INTENDED USE.

(c) Purchaser Remedy- Horizon’s sole obligation
hereunder shall be that Horizon will, at its option, (i)
repair or (ii) replace, any Product determined by Horizon
to be defective. In the event of a defect, these are
the Purchaser’s exclusive remedies. Horizon reserves
the right to inspect any and all equipment involved in
a warranty claim. Repair or replacement decisions are
at the sole discretion of Horizon. This warranty does
not cover cosmetic damage or damage due to acts of
God, accident, misuse, abuse, negligence, commercial
use, or modification of or to any part of the Product.
This warranty does not cover damage due to improper
installation, operation, maintenance, or attempted repair
by anyone other than Horizon. Return of any goods
by Purchaser must be approved in writing by Horizon
before shipment.

Damage Limits:

HORIZON SHALL NOT BE LIABLE FOR SPECIAL,
INDIRECT OR CONSEQUENTIAL DAMAGES, LOSS OF
PROFITS OR PRODUCTION OR COMMERCIAL LOSS IN
ANY WAY CONNECTED WITH THE PRODUCT, WHETHER
SUCH CLAIM IS BASED IN CONTRACT, WARRANTY,
NEGLIGENCE, OR STRICT LIABILITY. Further, in no

Warranty and Follow-Up Procedures

event shall the liability of Horizon exceed the individual
price of the Product on which liability is asserted. As
Horizon has no control over use, setup, final assembly,
modification or misuse, no liability shall be assumed nor
accepted for any resulting damage or injury. By the act
of use, setup or assembly, the user accepts all resulting
liability.

If you as the Purchaser or user are not prepared
to accept the liability associated with the use of
this Product, you are advised to return this Product
immediately in new and unused condition to the place of
purchase.

Law: These Terms are governed by Illinois law (without
regard to conflict of law principals).

Safety Precautions:

This is a sophisticated hobby Product and not a toy.
It must be operated with caution and common sense
and requires some basic mechanical ability. Failure to
operate this Product in a safe and responsible manner
could result in injury or damage to the Product or
other property. This Product is not intended for use by
children without direct adult supervision. The Product
manual contains instructions for safety, operation
and maintenance. It is essential to read and follow all
the instructions and warnings in the manual, prior to
assembly, setup or use, in order to operate correctly
and avoid damage or injury.

Questions, Assistance, and Repairs:

Your local hobby store and/or place of purchase
cannot provide warranty support or repair. Once
assembly, setup or use of the Product has been
started, you must contact Horizon directly. This
will enable Horizon to better answer your questions
and service you in the event that you may need any
assistance. For questions or assistance, please direct
your email to [e-mail],
or call 877.504.0233 toll free to speak to a service
technician.

Inspection or Repairs

If this Product needs to be inspected or repaired,
please call for a Return Merchandise Authorization
(RMA). Pack the Product securely using a shipping
carton. Please note that original boxes may be
included, but are not designed to withstand the rigors
of shipping without additional protection. Ship via a
carrier that provides tracking and insurance for lost
or damaged parcels, as Horizon is not responsible

Range Checking your Radio System

After you have finished the final assembly, it is time
to range check the radio system within the T-28 Trojan
PNP.

Prior to each flying session:

• Make sure that no one around may be flying, or is

getting prepared to fly, on the same channel that
you are on. After this is confirmed, turn on the
transmitter prior to plugging in the flight battery.
With the airplane on the ground and motor running,
you should walk away approximately 100 feet
and still have full control of all functions. If this is
not the case, do not fly! Call Product Support at
1-877-504-0233.

• Always make sure that all controls are functioning

per the transmitter input that you are giving. This
includes ailerons, rudder, elevator and throttle.

• Always make sure you have fully charged the
transmitter batteries.

Always remove the flight battery from the airplane
when you are done flying, or when you are on the
way to the flying field.

Flying

Always choose a wide-open space for flying your
ParkZone T-28 Trojan PNP. It is ideal for you to fly at
an AMA sanctioned flying field. If you are not flying at
an AMA approved site, always avoid flying near houses,
trees, wires and buildings. You should also be careful to
avoid flying in areas where there are many people,
such as busy parks or school yards. Always follow local
ordinances. We recommend only flying your Trojan in
light winds.

Prior to each flight:

• Always make sure your T-28 Trojan PNP is properly

trimmed.

• Always make sure the receiver, ESC, and battery

are properly secured.

• Always verify the propeller is on securely.

• Always ensure the servo reversing switches on the

transmitter are set correctly.

• Always verify the dual rates switch is set at where

you plan on flying. We recommend LOW rates for
your initial flying. The T-28 Trojan PNP is VERY
maneuverable on high rates and requires a lot of
experience to handle properly.

Step 8

Step 9

Fly in this area

(upwind of pilot)

Stand here

600 feet

WIND

Center of Gravity Location:

• The center of gravity on your T-28 Trojan should be

located approximately 2-1/2” behind the leading
edge of the wing, when measured against the
fuselage. This CG location has been determined
with the ParkZone 1800mAh 11.1V Li-Po
battery installed.

10

11

for merchandise until it arrives and is accepted
at our facility. A Service Repair Request is available

at www.horizonhobby.com on the “Support” tab. If
you do not have internet access, please include a
letter with your complete name, street address, email
address and phone number where you can be reached
during business days, your RMA number, a list of
the included items, method of payment for any non­warranty expenses and a brief summary of the problem.
Your original sales receipt must also be included for
warranty consideration. Be sure your name, address,
and RMA number are clearly written on the outside of
the shipping carton.

Warranty Inspection and Repairs

To receive warranty service, you must include your
original sales receipt verifying the proof-of-purchase
date. Provided warranty conditions have been met,
your Product will be repaired or replaced free of
charge. Repair or replacement decisions are at the sole
discretion of Horizon Hobby.

Non-Warranty Repairs

Should your repair not be covered by warranty
the repair will be completed and payment will
be required without notification or estimate of
the expense unless the expense exceeds 50%
of the retail purchase cost. By submitting the item

for repair you are agreeing to payment of the repair
without notification. Repair estimates are available upon
request. You must include this request with your repair.
Non-warranty repair estimates will be billed a minimum
of ½ hour of labor. In addition you will be billed for
return freight. Please advise us of your preferred
method of payment. Horizon accepts money orders and
cashiers checks, as well as Visa, MasterCard, American
Express, and Discover cards. If you choose to pay by
credit card, please include your credit card number
and expiration date. Any repair left unpaid or unclaimed
after 90 days will be considered abandoned and will be
disposed of accordingly. Please note: non-warranty

repair is only available on electronics and model
engines.

Electronics and engines requiring inspection or repair
should be shipped to the following address:

Horizon Service Center

4105 Fieldstone Road

Champaign, Illinois 61822

All other Products requiring warranty inspection or
repair should be shipped to the following address:

Horizon Product Support

4105 Fieldstone Road

Champaign, Illinois 61822

Please call 877-504-0233 with any questions or
concerns regarding this product or warranty.

Replacement Parts

Make sure that you keep your T-28 Trojan PNP flying. Replacement parts are available at your local hobby shop or
from Horizon Hobby (www.horizonhobby.com). Please try your local hobby shop first. By supporting them, they will
be there when you need them!

Item #: Description: Retail

PKZ4403 Decal Sheet: T-28 $4.99
PKZ1012 Propeller: T-28 $3.49
PKZ1063 Servo Y-Harness: T-28/3D2 $1.49
PKZ1081 SV80 Servo (long lead): T-28 Ailerons $11.99
PKZ1060 SV120 Servo (short lead): T-28 Elevator $12.99
PKZ1090 DSV130M Servo (short lead): T-28 Rudder $13.99
PKZ1011 Prop Adapter: T-28 $5.49
PKZ1064 Metal Gear Set: DSV130M $5.99
PKZ4413 Clear Canopy & Painted Pilot w/Pedestal: T-28 $7.49
PKZ4406 Main Landing Gear: T-28 $5.49
PKZ4407 Nose Gear Set: T-28 $2.39
PKZ4415 Instruction Manual: T-28 $0.99
PKZ4416 480 Outrunner Brushless Motor: T-28 $60.99
PKZ4417 Instruction Manual: T-28 PNP $0.99
PKZ4418 Motor Mount $3.99
PKZ4420 Painted Wing (No Servo): T-28 $37.99
PKZ4422 Pushrods w/Clevis: T-28 $2.59
PKZ4425 Horizontal Tail w/Accessories: T-28 $10.99
PKZ4426 Cowl: T-28 $5.99
PKZ4467 Painted Bare Fuselage: T-28 $31.99
EFLA1025 25-Amp Pro Brushless ESC $59.99

Optional Parts

PKZ4161 FM Crystal Set CH17, 72.130 $9.99
PKZ4162 FM Crystal Set CH19, 72.170 $9.99
PKZ4163 FM Crystal Set CH21, 72.210 $9.99
PKZ4164 FM Crystal Set CH50, 72.790 $9.99
PKZ4165 FM Crystal Set CH52, 72.830 $9.99
PKZ4166 FM Crystal Set CH54, 72.870 $9.99
PKZ4341 Tx: (T672) CH17, 72.130: 3D2/T28 $33.99
PKZ4351 Rx: (RA672) CH17, 72.130: 3D2/T28 $29.99
PKZ1040 2- to 3-Cell DC Li-Po Balancing Charger $34.99
PKZ1030 2200mAh 11.1V Li-Po Battery $75.99
PKZ1031 11.1V 1800mAh Li-Po Battery $69.99
PKZ1050 3S LiPO and Battery Charger $89.99

PKZ4417

Spektrum radios and accessories are exclusively available from Horizon Hobby, Inc.

Spektrum is used with permission of Bachmann Industries, Inc.

ParkZone® products are distributed exclusively by

Horizon Hobby, Inc.
4105 Fieldstone Road
Champaign, IL 61822

©2008 Horizon Hobby, Inc.

www.parkzone.com

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