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This exciting Ultra Micro Series edition of ParkZone’s wildly popular T-28 is a must-have for 
any intermediate to experienced pilot. Like the original, it has plenty of performance for 
sport aerobatics but remains a joy to fl y at slower speeds if you want to throttle back and 
shoot touch and gos. And, like the original, it boasts remarkably scale lines and a great 
looking U.S. Navy trim scheme. Best of all, this one is small enough to fl y in your backyard. 

To register your product online, go to http://www.parkzone.com

Safety Precautions and Warnings .................  3 
Introduction .........................................................  4
First Flight Preparation .....................................  4
Maintenance Tips ...............................................  4
Battery Warnings ................................................  5
Low Voltage Cutoff  (LVC) .................................  5
Charging the Battery .......................................... 6
Transmitter and Receiver Binding ................. 7
Installing Transmitter Batteries ....................... 7
Transmitter Controls ..........................................  8
Digital Trims ..........................................................  8
Dual Rate Function ............................................. 8
Control Direction Test ........................................ 8
Reverse Controls .................................................. 9

Control Centering..............................................10
Installing Landing Gear ...................................10
Receiver Control Unit .......................................11
Arming ..................................................................11
Motor Control Test ............................................11
Adjusting Center of Gravity ...........................11
Propeller and Propeller Shaft Maint. ..........12
Flying Tips ............................................................13
Repairs ...................................................................13
Re-binding Transmitter ...................................13
Troubleshooting Guide ...................................14
Replacement Parts and Optional Parts .....15
Warranty and Service .......................................15
Contact Information .........................................16

First Flight Preparation

Remove and inspect contents

• 

Begin charging the fl ight battery

• 

Install landing gear

• 

Install batteries into battery charger

• 

 Install batteries into the  included 

• 

transmitter (RTF ONLY)
 Install fully charged battery

• 

Bind the receiver to a transmitter 

• 

(BNF ONLY)
Perform the Control Direction Test with 

• 

the transmitter
Adjust fl ight controls and transmitter

• 

Adjust battery for center of gravity (CG) 

• 

Perform a radio system Range Check

• 

Find a safe and open area

• 

Plan fl ight for fl ying fi eld conditions

• 

Maintenance After Flying

Disconnect fl ight battery from ESC 

• 

(Required for Safety)
Turn off  transmitter

• 

Remove fl ight battery from aircraft

• 

Recharge fl ight battery

• 

Repair or replace all damaged parts

• 

Store fl ight battery apart from aircraft  

• 

and monitor the battery charge
Make note of fl ight conditions and fl ight 

• 

plan results, planning for future fl ights

Table of Contents

T-28 Specifi cations

Wingspan

Length

Weight

16.8 in (426mm)

13.5 in (343mm)

1.30 oz (38 g)

T-28 Features

Bind-N-Fly 

Version

Ready to Fly 

Version

Onboard Electronics

Spektrum AR6400 
Receiver/Servos/ESC 

Installed

Installed

Battery

120mAh 3.7V 14C 
Li-Po

Included

Included

Charger

1S 3.7V Li-Po Battery 
Charger

Included

Included

Transmitter

DSM2 aircraft 
transmitter 

Sold 

Separately

Included

EN

Summary of Contents for Ultra MicroT-28 Trojan RTF/BNF

Page 1: ...Ultra Micro T 28 Trojan RTF BNF RTF Instruction Manual Bedienungsanleitung Manuel d utilisation Manuale di Istruzioni ...

Page 2: ...2 ...

Page 3: ... personal property and cause serious injury 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 supervisio...

Page 4: ...ional Parts 15 Warranty and Service 15 Contact Information 16 First Flight Preparation Remove and inspect contents Begin charging the flight battery Install landing gear Install batteries into battery charger Install batteries into the included transmitter RTF ONLY Install fully charged battery Bind the receiver to a transmitter BNF ONLY Perform the Control Direction Test with the transmitter Adju...

Page 5: ... be damaged or even catch fire Li Po cells should not be discharged to below 3V each under load Battery Warnings Low Voltage Cutoff LVC The T 28 receiver features a soft low voltage cutoff LVC that occurs when the battery reaches 3V per cell under load When the soft cutoff occurs the electronic speed control ESC and receiver reduce power to the motor regardless of the power level set with the thro...

Page 6: ... a fully discharged not over discharged 120mAh battery takes approximately 30 40 minutes As the battery nears full charge the LED begins to blink 7 When the battery is fully charged the LED blinks approximately every 20 seconds or goes out entirely Note If the LED stays on when the LiPo is removed the AA batteries in the charger are low 8 Always unplug the battery from the charger immediately upon...

Page 7: ...s for binding to a receiver 2 Make sure the flight battery is disconnected from the airplane 3 Power off the transmitter 4 Connect the flight battery in the aircraft The receiver LED will begin to flash Typically after 5 seconds 5 Put your transmitter into bind mode If using the MLP4DSM transmitter push the left control stick vertically into the case until it clicks while powering on the transmitt...

Page 8: ...ansmitter before doing these tests Move the controls on the transmitter to make sure aircraft control surfaces are moved correctly Mode 2 shown Control Direction Test Elevator Rudder Trim This transmitter s dual rate feature lets the pilot change between high and low control rates for the aileron elevator rudder and throttle channels When powered on this transmitter is automatically in high rate m...

Page 9: ...ol surfaces See Servo Reversing in your transmitter manual 1 Be certain the battery is unplugged from the aircraft and the transmitter is turned off 2 Press and hold the digital trim button for the surface you would like to reverse 3 While holding the digital trim button turn the transmitter on 4 Hold the digital trim buttons down for approximately 5 seconds until you hear a tone confirming the se...

Page 10: ...shape in the pushrod Control Centering 1 Remove the airplane and the landing gear from the box 2 Gently slide left and right mainlanding gear into plastic mounting clips on the bottom of the wings orienting the struts toward the front of the airplane as shown Note Install left and right gear with the vertical strut of the landing gear toward the front of each wing Install the bent wire of each str...

Page 11: ...sh red then bind the transmitter to the aircraft per instructions on page 6 Note The throttle trim must be at the lowest setting to arm the ESC 1 Install the fully charged flight battery in the airplane 2 Where necessary apply a strip of hook fastener to the back of the battery opposite the label 3 Connect flight battery to Spektrum AR6400 plug Refer to photo below for correct alignment 4 Attach f...

Page 12: ...e Removing tape or decals will remove paint from the fuselage 2 While the fuselage is open hold the white nylon nut on the prop shaft using needle nose pliers or hemostats 3 Turn the spur gear on the prop shaft clockwise to remove the nut 4 Gently pull the shaft from the gearbox Note Make sure no parts fall into the fuselage when removing the shaft Installing 1 Turn a 130mm x 70mm prop and spinner...

Page 13: ...mize hitting the prop While this does not damage the airplane it is possible to wear down the tips of the propeller if flying from an abrasive surface such as concrete or asphalt Note You can also raise the nose gear to avoid further prop strikes Failure to lower the throttle stick and trim to the lowest possible positions during a crash could result in damage to the ESC in the receiver unit which...

Page 14: ...fter powering transmitter and before connecting flight battery to aircraft Transmitter too near aircraft during binding process Batteries in transmitter low Disconnect then connect flight battery to aircraft Move powered transmitter a few feet from aircraft disconnect and connect flight battery to aircraft Replace transmitter batteries Control surface does not move or is slow to respond to control...

Page 15: ...ransmitter Mode 2 EU Optional SPMR66001E DX6i 6 Channel Transmitter Mode 1 EU Optional SPMR7700 DX7 7 Channel Transmitter Mode 2 Optional SPMR77001 DX7 7 Channel Transmitter Mode 1 Optional SPMR7700E DX7 7 Channel Transmitter Mode 2 EU Optional SPMR77001E DX7 7 Channel Transmitter Mode 1 EU Optional Warranty and Repair Policy Warranty Period ExclusiveWarranty Horizon Hobby Inc Horizon warranties t...

Page 16: ...s as Horizon is not responsible for merchandise until it arrives and is accepted at our facility An Online Repair Request is avail able at www horizonhobby com http www horizonhobby com under the Repairs tab If you do not have internet access please contact Horizon Product Support to obtain a RMA number along with instructions for submitting your product for repair When calling Horizon you will be...

Page 17: ...ence and 2 this device must accept any interference received including interference that may cause undesired operation Caution Changes or modifications not expressly approved by the party responsible for compliance could void the user s authority to operate the equipment This product contains a radio transmitter with wireless technology which has been tested and found to be compliant with the appl...

Page 18: ...cling of waste electrical and electronic equipment The separate collection and recycling of your waste equipment at the time of disposal will help to conserve natural resources and ensure that it is recycled in a manner that protects human health and the environment For more information about where you can drop off your waste equipment for recycling please contact your local city office your house...

Page 19: ...19 ...

Page 20: ...n of Bachmann Industries Inc ParkZone E flite JR Celectra DSM2 Vapor and Ember are trademarks or registered trademarks of Horizon Hobby Inc Futaba is a registered trademark of Futaba Denshi Kogyo Kabushiki Kaisha Corporation of Japan US 7 391 320 US D578 146 PRC ZL 200720069025 2 Other patents pending www parkzone com Created 6 10 28376 ...

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