Arrows Hobby Husky User manual

1800MM HUSKY
OPERATING MANUAL

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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 flown 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, traffic 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 cont-
rol. Interference can cause momentary loss of control.
• Never catch the aircraft while it is in flight, 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 flight. Use the throttle cut
function if able. Always use fully charged batteries and move batteries before
disassembly.
• Avoid water exposure to all equipment not specifically 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.

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Introduction
Table of contents Specications
Kit contents
The Husky is a PA-18 inspired, high-winged light utility aircraft which made its first flight in 1986.
Arrows Hobby has recreated this backcountry workhorse- from rivet lines and body panels to the
predictable STOL flight characteristics- without overlooking any detail when creating the 1800mm
Husky.
Packed full of attractive features, the Arrows 1800mm Husky is prebuilt with a rugged CNC landing gear,
oversized balloon tires and functional flaps for true STOL backcountry operations.
Arrows Hobby is also proud to present a Special Edition the Husky featuring an alternative trim scheme
and uprated electronics- 3948 700kv motor, 50A ESC and 23g metal servos.
The Pro version allows expert pilots to further expand the flight envelope of the Husky- while fiber-rein-
forced control surfaces ensure precision control at these higher loads.
Perfect for beginners and experts alike, the Husky is the ultimate Bush plane every pilot needs!
• Scale navigation and landing lights
• Oversized battery compartment
• Screw-together assembly
• Functional flaps
• Attractive red/black trim scheme
• Made from durable EPO material
Features:
• Special Edition 3948 700kv motor, 50A ESC, 23g metal
servos*6
• Excellent STOL and slow speed performance, allowing
takeoffs and landings within 3m
• CNC landing gear absorb even the hardest of landings
• Ultra durable oversized tires
Introduction ················································· 3
Specifications ·············································· 3
Kit contents ·················································· 3
Model Assembly ········································· 4
Battery installation ···································· 7
Receiver diagram ······································ 7
Preflight check ············································ 7
Clevis installation ······································· 8
Control horn and servo arm settings ·· 9
Center of gravity(CG) ································ 9
Before flying the model ·························· 9
Flying course ············································· 10
Trouble shooting ······································ 11
Spare parts list content ·························· 11
Wingspan 1800mm(71in)
Flying weight ~ 2350g
Wing load 49g/dm2(0.1oz/in2)
Servo 23g Servo x 6
Overall length 1200mm(47in)
Motor size 3948 KV700
ESC 50A
Wing area 47.7dm2 (739sq.in)
Recommended battery 5S 18.5V 3300mAh 40C
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 B: Horizontal stabilizer C: Vertical stabilizer
D: Main wing set E: Main landing gear set F: Antenna
G: Propeller and spinner set H: Wing spar I: Linkage rod and screw set
(HKM3.0X16*8,KA3.0X16*2, HKM3.0X32*3)

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Model assembly
Wing installation
Installation of the landing gear set
1. With the fuselage inverted, slide the
landing gear into the fuselage slots as shown.
1. Slide the wing spar into the fuselage pass
through.
2. Slide the landing gear retainers into the
fuselage slots and secure the assembly using
the included screws.
2. Attach the wing struts to the wing as
shown.

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Model assembly
Wing installation
Horizontal and vertical stabilizer installation
3. With the fuselage inverted, connect the aile-
ron servo wire then secure the wing and wing
struts using the included screws.
1. Place the horizontal stabilizer onto the fuse-
lage cutout.
2. Place the vertical stabilizer onto the
horizontal stabilizer. Secure using the
included screw.
3. Attach both tailfins to the fuselage using
the included screws.

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Model assembly
Puhsrod installation
Antenna installation Propeller and spinner installation
1. With the servo and elevator centered,
connect the servo to the control surface using
a pushrod.
2. With the servo and rudder centered, con-
nect the servo to the control surface using a
pushrod.
1. Place the antennae into their positions on
top of the wings as shown, then push them
aft to secure.
1. The propeller and spinner are secured onto
the motor shaft in the order shown.

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Important ESC and model information
Battery installation
Receiver diagram
Preight check
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 to-
wards the rear of the battery hatch.
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
flown 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 4-5S 2500 - 3500 maH Li-Po battery. If using another battery, the
battery must be at least a 4-5S 2500 - 3500 maH battery. Your battery should be approximately the same capacity,
dimension and weight as the 4-5S 2500 - 3500 maH Li-Po battery to fit the fuselage without changing the center of
gravity significantly.

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transmitter and model setup
Control throws
Aileron
Aileron
Rudder
Elevator
Elevator Rudder
Preight check
After assembly and prior to your rst ight, make sure all control surfaces respond correctly
to your transmitter by referring to the diagram below.
The suggested control throw setting for the Husky Special Edition are as follows (dual rate
setting):
1.Pull the tube from the clevis to the
linkage.
2.Carefully spread the clevis, then insert
the clevis pin into the desired hole in the
control horn.
3.Move the tube to hold the clevis on the
control horn.
Tips: The maiden flight should always be
flown using low rates, fly the aircraft until
you are famil- iar with its characteristics
prior to trying high rates. Make sure the air-
craft is flying 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.
High Rate
18mm up /down 14mm up /down
16mm up /down 12mm up /down
28mm left /right 20mm left /right
Low Rate
Clevis installation

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Find a suitable ying site
Performing a range check
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 flying, you may choose to adjust the
linkage positions for the desired control
response.
Finding the correct center of gravity is critical in ensuring that the
aircraft performs in a stable and responsive manner. Please adjust
the weight distribution so the aircraft balances in the range stated on
the diagram.
• 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 flying without
unnecessary counterweight.
• Depending on the capacity and weight of your choo-
sen flight batteries, move the battery forward or back-
ward to adjust the center of gravity.
Find a flying site clear of buildings, trees, power lines and other obstructions. Until you know how much area
will be required and have mastered flying your plane in confined spaces, choose a site which is at least the
size of two to three football fields - a flying field specifically for R/C planes is best. Never fly near
people - especially children, who can wander unpredictably.
A radio range check should be performed prior to the first flight 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 com- ponents or radio interference. This usually requires an assistant
and should be done at the flying site.
Control horn and servo arm settings
Finding the center of gravity
Before ying the model
Horns
Elevator
RudderAilerons
Arms More control throw
Less control throw

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Before ying the model
Flying course
Monitor your ight time
Always turn your transmitter on first. 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.
Note: Please refer to your transmitter manual that came with your radio control system to perform a ground
range check. If the controls are not working correctly or if anything seems wrong, do not y the model until you
correct the problem. Make certain all the servo wires are securely connected to the receiver and the transmitter
batteries have a good connection.
Monitor and limit your flight time using a timer (such as a stopwatch or on the transmitter, if available). As modern Lithi-
um Polymer batteries are not designed to discharge completely, when the battery runs low, the ESC will lower then com-
pletely cut the power to the motors to protect the battery. Often (but not always) power can be briefly 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 first flight,set your timer to a conservative 4 minutes. When your alarm sounds you should land right away.
Take off
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 cons-
tant 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.
Flying
Always choose a wide-open space for flying your plane. It is ideal for you to fly at a sanctioned flying field. If you are not
flying at an 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, schoolyards, or soccer fields. Consult laws and
ordinances before choosing a location to fly your aircraft. After takeoff, gain some altitude. Climb to a safe height before
trying technical manoeuvres.
Landing
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 flight 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 fly down to the ground. Fly the airplane down to the
ground using 1/4-1/3 throttle to keep enough energy for proper flare. 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 firmly in place before every flight.

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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, mo-
tor 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 con-
trols.
• 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 flight
battery.
Reduced flight time or
aircraft underpowered.
• Flight battery charge is low
• Propeller installed backward.
• Flight battery damaged.
• Completely recharge flight battery.
• Replace flight battery and follow flight battery
instructions.
Controls reversed.
Fuselage Sticker
Battery Hatch Propeller
Cowl Brushless motor
Horizontal stabilizer Screw set
Front landing gear set Motor Mount
Wing Pipe 23g metal gear servo positive
LED Vector(Gyro)
Main wing set Linkage rod
Wheel set Motor shaft
Propeller plate 50A ESC
Vertical stabilizer Float set
Supporting bar set Motor Board
Antenna 5S 18.5V 3300mAh 40C
Lamp Cover
• Channels are reversed in the
transmitter.
• Do the control direction test and adjust controls for
aircraft and transmitter.