MODSTER Arrows HOBBY TWIN 64MM F-15 User manual


OPERATING MANUAL

2
WARNING: This manual contains important information that will help you maintain and
operate your model aircraft in a reliable and safe manner. Please read the instructions and
warnings carefully prior to assembly, setup or use.
As this model aircraft is a sophisticated hobby product, it must be own with safety and
common sense in mind, failure in doing so may result in injury or property damage. This
product is not intended for use by children without direct adult supervision.
As the user, you are solely responsible for the safe operation and maintenance of this
product. Follow the directions and warnings listed in this manual, as well as that of
supporting equipment (chargers, batteries etc.) and always use common sense.
Safety precautions and Warnings
This is not a toy. Not for children under 14 years of age.
• Always operate your model in an open area away from buildings, cars, trafc or people. Never
operate near people-especially children who can wander unpredictably. Never operate in
populated areas for any reason, where injury or damage can occur.
• Always keep a safe distance in all directions around your model to avoid collisions or injury. This
model is controlled by a radio signal subject to interference from many sources outside your
control. Interference can cause momentary loss of control.
• Never catch the aircraft while it is in ight, the structure of the fuselage was not designed and
protected for this purpose.
• Never operate your model in bad weather, including in excessively windy or precipitating
conditions.
• Never operate your model with low transmitter batteries.
• Keep your throttle quadrant in its lowest position prior and after every ight. Use the throttle cut
function if able. Always use fully charged batteries and move batteries before
disassembly.
• Avoid water exposure to all equipment not specically designed and protected for this purpose.
• Avoid cleaning this product with chemicals.
• Never lick or place any part of your model in your mouth as it could cause serious injury or even
death.
• Keep all chemicals, small parts and anything electrical out of the reach of children.

3
Introduction
Table of contents Specications
The McDonnell Douglas F-15 Eagle is an American twin-engine, all-weather tactical ghter aircraft
designed by McDonnell Douglas. The Eagle rst ew in July 1972, and entered service in 1976. It is among
the most successful modern ghters, with over 100 victories and no losses in aerial combat 14 months in
the making, the Arrows F-15 is lovingly recreated- from accurate panel lines to the adrenaline-pumping
performance- this is as real as it gets!
With its twin 64mm EDF power system, large wing area and highly strengthened wing structure the
Arrows F-15 can perform advanced aerobatic ight maneuvers along with exceptional high alpha
capabilities without losing control surface authority.
The 900mm wingspan Arrows F-15 was designed using hundreds of photos and aircraft design les.
Built from high-strength EPO material, no detail was missed in the design of this faithful replica.
A fan of scale? The Arrows F-15 has electric CNC retracts, functional aps, LED navigation lights, pilot
gure, antennae, machine guns, auxiliary fuel tanks, missiles and numerous other scale components.
A magnetic nose cone and latch-type canopy allow these components to stay in place even in high-G
maneuvers.
Power comes courtesy of two 12 bladed 64mm EDFs (using 2840-2280KV motors), with dual 40A ESCs
and a 22.2V 3300mAh 35C battery pack. This power system gives the aircraft a turbine-like note and
ultra-high power-to-weight ratio.
Painted in the Oregon air national guard F-15C trim scheme, this is one of the most attractive F-15 Eagles
on the market today.
Looking for a dog-ghting powerhouse with stable low-speed characteristics and excellent handling to
take on the Mig-29? Look no further than the Arrows hobby F-15!
• Electric CNC retracts with over-current protection
• Carbon reinforced airframe
• Fantastic low-speed performance and aerobatic
capabilities
Features:
• Dual 12-bladed 64mm EDFs, dual 2840 2280KV motors,
dual 40A ESC with external 5.5V 5A BEC
• Highly realistic scale components: Electric CNC retracts,
functional aps, LED navigation lights, pilot gure,
antennae, machine guns, auxiliary fuel tanks & missiles
• Screw-together assembly, magnetic nose cone,
latch-type canopy and ball-link pushrods
Introduction ················································· 3
Specications ·············································· 3
Kit contents ·················································· 4
Model Assembly ········································· 4
Battery installation ···································· 6
Receiver diagram ······································ 6
Preight check ············································ 6
Control horn and servo arm settings ··· 7
Center of gravity(CG) ································ 8
Before ying the model ··························· 8
Flying course ··············································· 9
Trouble shooting ······································ 10
Spare parts list content ·························· 10
Wingspan 900mm (35.4in)
Flying weight ~ 2600g
Wing load 91.5g/dm2 (0.19oz/in2)
Servo 9g Servo x 9
Overall length 1345mm (53in)
Motor size 2840-KV2280 (2pcs)
ESC 40A (2pcs)
Wing area 28.4dm2 (440sq.in)
Recommended battery 22.2V 3300MAH 35C

4
Model assembly
Main wing assembly
Before assembly, please inspect the contents of the kit. The photo below details the contents of the kit with labels. If any
parts are missing or defective, please identify the name or part number (refer to the spare parts list near the end of the
manual) then contact your local shop.
A: Fuselage C: Vertical stabilizer E: Missile set G: Nose cone H: Screw set
B: Main wing D: Horizontal stabilizer F: Wing spar (HKM3.0X10*4)
Installation of the vertical and horizontal stabilizers
1. Slide the spar into the fuselage and the wing halves
over the spar. Connect the servo leads and push the
wing halves into the slots on the fuselage.
1.Apply glue to the areas shown below, connect the
servo connectors and adhere the stabilizers to the fuse-
lage.
Note: Ensure that the servo leads are not bent or
damaged in the process.
2. Secure using the included screws.
Kit contents

5
Model assembly
Nose cone installation
Missile installation
2.Apply glue to the areas shown below, connect the
servo connectors and adhere the stabilizers to the
fuselage
1.Install the nose cone onto the nose of the aircraft, note
the orientation of the component.
1.Slide the missiles onto the wings and push aft to
secure.

6
Battery installation
Receiver diagram
Preight check
Important ESC and model information
1. Remove the battery hatch.
2. Remove the hook and loop tape from the fuselage.
Apply the looped surface to the battery.
3. Install the battery into the fuselage- securing it with
the preinstalled battery straps.
Note: The weight of each battery may vary due to different
manufacturing techniques. Move the battery fore or aft to
achieve the optimal center of gravity.
The cables from the servo connector board should be
connected to your receiver in the order shown. Note that the
LEDs can be powered by any spare channel on the receiver.
Tuck the wire leads into the recessed cavity towards the rear
of the battery hatch.
Aileron
Receiver

-Aile
Channel-3
-Thro

-Spare
Channel-2
-Elev
Channel-4
-Rudd
Channel-6
-Flap
Throttle
Spare
Elevator
Rudder
Flap
1. The ESC included with the model has a safe start. If the motor battery is connected to the ESC and the throttle stick
is not in the low throttle or off position, the motor will not start until the throttle stick is moved to the low throttle or off
position. Once the throttle stick is moved to the low throttle or off position, the motor will emit a series of beeps. Several
beeps with the same tune means the ESC has detected the cells of the battery. The count of the beeps equals the cells of
the battery. The motor is now armed and will start when the throttle is moved.
2. The motor and ESC come pre-connected and the motor rotation should be correct. If for any reason the motor is
rotating in the wrong direction, simply reverse two of the three motor wires to change the direction of rotation.
3. The motor has an optional brake setting. The ESC comes with brake switched off and we recommend that the model
be own with the brake off. However, the brake could be accidentally switched on if the motor battery is connected to the
ESC while the throttle stick is set at full throttle. To switch the brake off, move the throttle stick to full throttle and plug in
the motor battery. The motor will beep one time. Move the throttle stick to low throttle or the off position. The motor is
ready to run and the brake will be switched off.
4. Battery Selection and Installation. We recommend the 22.2V 3300MAH 35C Li-Po battery. If using another battery, the
battery must be at least a 22.2V 3300MAH 35C battery. Your battery should be approximately the same capacity, dimen-
sion and weight as the 22.2V 3300MAH 35C Li-Po battery to t the fuselage without changing the center of gravity
signicantly.

7
transmitter and model setup
Aileron Elevator Rudder
Control throws
Preight check
Control horn and servo arm settings




 
Tips: The maiden ight should always be own
using low rates, y the aircraft until you are
familiar with its characteristics prior to trying high
rates. Make sure the aircraft is ying at a decent
altitude and speed prior to using high rates, as
the aircraft will be sensitive to control inputs with
the larger control surface movements.
1. The table shows the factory settings for the
control horns and servo arms. Fly the aircraft at the
factory settings before making changes.
2. After ying, you may choose to adjust the linkage
positions for the desired control response.
Arms More control throw
Less control throw
Horns
Aileron
Aileron ElevatorRudder
Rudder
Elevator 16mm up /down 12mm up /down
18mm up /down 14mm up /down
16mm left /right 12mm left /right

8
Find a suitable ying site
Performing a range check




• If you cannot obtain the recommended CG by moving the
battery to a suitable location, you can also install a counterweight
to achieve correct CG. However, with the recommended battery
size, a counterweight is not required. We recommend ying
without unnecessary counterweight.
• Depending on the capacity and weight of your choo-
sen ight batteries, move the battery forward or back-
ward to adjust the center of gravity.
Find a ying site clear of buildings, trees, power lines and other obstructions. Until you know how much area
will be required and have mastered ying your plane in conned spaces, choose a site which is at least the
size of two to three football elds - a ying eld specically for R/C planes is best. Never y near
people - especially children, who can wander unpredictably.
A radio range check should be performed prior to the rst ight of the day. This test may assist you in
detecting electronic problems that may lead to a loss of control- problems such as low transmitter
batteries, defective or damaged radio components or radio interference. This usually requires an assistant
and should be done at the ying site.
Finding the center of gravity
Before ying the model
Always turn your transmitter on rst. Install a fully charged battery in the battery bay, then connect it to the ESC. In this
process, make sure that the throttle cut functionality is on, and that the throttle stick is secured in its lowest position
otherwise, the propeller/fan will engage and possibly cause bodily harm.





9
Before ying the model
Flying course
Monitor your ight time
Monitor and limit your ight time using a timer (such as a stopwatch or on the transmitter, if available). As modern
Lithium Polymer batteries are not designed to discharge completely, when the battery runs low, the ESC will lower then
completely cut the power to the motors to protect the battery. Often (but not always) power can be briey restored after
the motor cuts off by holding the throttle stick all the way down for a few seconds.To avoid an unexpected dead-stick
landing on your rst ight,set your timer to a conservative 4 minutes. When your alarm sounds you should land right
away.

Point the aircraft into the wind while slowly applying power until the aircraft starts to track straight, use the rudder
when necessary. When the aircraft reaches takeoff speed, ease back on the elevator stick until the aircraft is climbing
at a constant rate without decelerating. Climbing at too steep of an angle at the relatively low speeds of a takeoff-climb
may result in an aerodynamic stall.

Always choose a wide-open space for ying your plane. It is ideal for you to y at a sanctioned ying eld. If you are not
ying at an approved site always avoid ying near houses, trees, wires and buildings. You should also be careful to avoid
ying in areas where there are many people, such as busy parks, schoolyards, or soccer elds. Consult laws and
ordinances before choosing a location to y your aircraft. After takeoff, gain some altitude. Climb to a safe height before
trying technical manoeuvres.

Land the aircraft when you start to feel sluggish motor response. If using a transmitter with a timer, set the timer so you
have enough ight time to make several landing approaches.The model’s three point landing gear allows the model
to land on hard surfaces. Align model directly into the wind and y down to the ground. Fly the airplane down to the
ground using 1/4-1/3 throttle to keep enough energy for proper are. Before the model touches down, always fully
decrease the throttle to avoid damaging the propeller or other components. The key to a great landing is to manage the
power and elevator all the way to the ground and set down lightly on the main landing gear. With some practice, you
will be able to set the aircraft gently on its main gear and hold it that way until the speed reduces enough where the
nose wheel (tricycle landing gear aircraft) or tail wheel (tail draggers) settles onto the ground.
Maintenance
Repairs to the foam should be made with foam safe adhesives such as hot glue, foam safe CA, and 5min epoxy. When
parts are not repairable, see the spare parts lst for ordering by item number.Always check to make sure all screws on the
aircraft are tightened. Pay special attention to make sure the spinner is rmly in place before every ight.

10
Troubleshooting
Sparte parts list
Problem Possible Case Solution
Aircraft will not respond to
the throttle but responds to
other controls.
Excessive vibration or
propeller noise.
Control surfaces
unresponsive or sluggish.
Motor loses power
Motor power pulses then
motor loses power.
• ESC is not armed.
• Throttle channel is reversed.
• Damaged spinner, propeller,
motor or motor mount.
• Loose propeller and spinner
parts. Propellor installed
• backwards.
• Control surface, control horn,
linkage or servo damage.
• Wire damaged or connections
loose.
• Damage to motor, or battery.
• Loss of power to aircraft.
• ESC uses default soft Low Voltage
Cutoff(LVC).
• Lower throttle stick and throttle trim to lowest
settings.
• Reverse throttle channel on transmitter.
• Replace damaged parts.
• Tighten parts for propeller adapter, propeller and
spinner.
• Remove and install propeller correctly.
• Replace or repair damaged parts and adjust
controls.
• Do a check of connections for loose wiring.
• Do a check of batteries, transmitter, receiver, ESC,
motor and wiring for damage(replace as needed).
• Land aircraft immediately and recharge ight
battery.
Reduced ight time or
aircraft underpowered. • Flight battery charge is low
• Propeller installed backward.
• Flight battery damaged.
• Completely recharge ight battery.
• Replace ight battery and follow ight battery
instructions.
Controls reversed.
 
 
 
Horizontal stabilizer 
 EL Retract
 
Control horn set 
 
 EL Retract
Wheel set 
 
Airspreed head 
Decal set 
Dummy armament set
LED set

• Channels are reversed in the
transmitter.
• Do the control direction test and adjust controls for
aircraft and transmitter.