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T-33 50mm
AH019PV - T-33 50mm - Operating Manual
Instruction 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.
Safety precautions and warnings
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.
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 control. 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
A.
B.
Simple is beautiful. Without any landing gear to deal with, the Arrows Hobby 50mm T-33 is lightweight and streamlined – perfect for those with a tight flying
field or budget!
To minimize drag, increase flight time and guarantee precision flight characteristics of the T-33, Arrows Hobby designed a rigid single- piece wing structure
and horizontal stabilizer. The lightweight airframe and exceptional aerodynamics give the Arrows Hobby 50mm T-33 excellent low speed handling and flight
time – uncharacteristic for small EDF jets of its size.
Power comes courtesy of a 50mm 11-blade fan unit, 2627-4500KV brushless motor and a high performance 30A ESC (with 3A BEC)- giving unparalleled
speed and sound.
In addition, Arrows Hobby takes the details a step further, with a steering gear protective shell on the bottom of the wings to facilitate belly landings. There
are distinctive fuel tanks on the wingtips, and detailed decals to enhance the scale details.
How do you get pinnacle performance on a small budget? Let Arrows Hobby work its magic with the 50mm T-33!
Features
• High power-to-weight ratio.
• Realistic, scale details.
• Simple and robust airframe.
• Easy to assemble
• No glue required
• Environmentally friendly water-based paint
Table of contents
Specifications
Introduction ------------------------------------------------- 3
Specifications ----------------------------------------------- 3
Kit contents ------------------------------------------------- 3
Model Assembly -------------------------------------------- 4
Wingspan 800mm
Lenght 750mm
Flying weight 495g
Battery installation ------------------------------------------ 7
Receiver diagram ------------------------------------------- 7
Preflight check ---------------------------------------------- 7
Clevis installation ------------------------------------------- 8
Motor size 2627-KV4500
Wing load 44.2g/dm
Wing area 11.2dm
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2
Control horn and servo arm settins ------------------------- 9
Centre of gravity (CG) --------------------------------------- 9
Before flying the model ------------------------------------- 9
Flight tips -------------------------------------------------- 10
ESC 30A
Servo 9g (3pcs)
Recommended battery 11.1V 1300mAh 30C
Troubleshooting -------------------------------------------- 11
Spare parts list --------------------------------------------- 11
Kit contents
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.
C.
A: Fuselage
B: Main wing
C: Horizontal stabilizer
D: Auxiliary fuel tanks
E: Screw set (KA2Æ0x12™4)
D. E.
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MODEL ASSEMBLY
KA2.0*12mm
Wing installation
1. Install the wing onto the fuselage slot, with Y-har-ness going
through the hole as shown.
Note: Do not squeeze the wire leads.
Horizontal stabilizer installation
2. Attach the wing to the fuselage using the included screws.
Note: Do not overtighten the screws.
1. Connect the elevator servo connectors to the servo extensions
in the fuselage.Install the horizontal stabilizer into the slot in the
fuselage.
Use a special cyanoacrylate glue for EPO foam
Auxiliary fuel tank installation
2. Install the pushrod to the control horn on the horizontal stabilizer
as shown.
1. Install the fuel tank onto the wing slots using foam
safe glue as shown. Note: pay attention to left and right
distinction.
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BATTERY INSTALLATION
1. Remove the battery cover.
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.
Receiver diagram
RECEIVER
Ailero ________1 _________ Channel-1 (Aile.)
Elevator ______2 _________ Channel-2 (Elev.)
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.
Throttle _______3 _________ Channel-3 (Thro.)
Rudder _______4 _________ Channel-4 (Rudd)
Spare ________5 _________ Channel-5 (Spare)
Flap _________6 _________ Channel-6 (Flap)
PREFLIGHT CHECK
Important ESC and model information
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 11.1V 1300mAh 30C Li-Po Li-Po battery. If using another battery, the battery must
be at least a 11.1V 1300mAh 30C Li-Po battery. Your battery should be approximately the same capacity, dimension and weight as the
11.1V 1300mAh 30C Li-Po Li-Po battery to fit the fuselage without changing the center of gravity significantly.
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PREFLIGHT CHECK
Transmitter and Model setup
After assembly and prior to your first flight, make sure all control surfaces respond correctly to your transmitter by referring to the diagram
below.
Control setup
The suggested control throw setting for the model are as follows (dual rate setting):
Tip: The maiden flight should always be flown using low rates, fly the
aircraft until you are familiar with its characteristics prior to trying high
rates. Make sure the aircraft is flying at altitude and adequate velocity
prior to using high rates, as the aircraft will be sensitive to control
inputs with the larger control surface movements.
Clevis installation
a.
b.
c.
High rate Low Rate
Elevetor 10mm Up/Down 8mm Up/Down
Aileron 10mm Up/Down 8mm Up/Down
d.
e.
f.
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.
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CONTROL HORN AND SERVO ARM SETTINGS
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.
ElevatorRudder
Ailerons
Horns
Arms
=More control
=Less control
CENTRE OF GRAVITY
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.
• Depending on the capacity and weight of your chosen
flight batteries, move the battery forward or backward
to adjust the center of gravity.
75-85mm
• 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.
BEFORE FLYING THE MODEL
Find a suitable flying site
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.
Performing a range check
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.
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BEFORE FLYING THE MODEL
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- other-wise, 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 fly 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 your flight time
Monitor and limit your flight 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 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.
FLIGHT TIPS
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 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.
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 list 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
PROBLEM POSSIBLE CAUSE SOLUTION
Aircraft will not respond to the throttle but
responds to other controls.
Excessive vibration or propeller noise.
Reduced flight time or aircraft underpowered.
Control surfaces unresponsive or sluggish.
Controls reversed. • Channels are reversed in the transmitter.
Motor loses power
Motor power pulses then motor loses power.
LED on receiver flashes slowly. • Power loss to receiver.
• ESC is not armed.
• Throttle channel is reversed.
• Damaged spinner, propeller, motor or motor
mount.
• Loose propeller and spinner parts. Propellor
installed backwards.
• Flight battery charge is low. Propeller installed
backward. Flight battery damaged.
• 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.
• Completely recharge flight battery.
• Replace flight battery and follow flight battery
instructions.
• Replace or repair damaged parts and adjust
controls.
• Do a check of connections for loose wiring.
• Do the control direction test and adjust controls
for aircraft and transmitter.
• Do a check of batteries, transmitter, receiver,
ESC, motor and wiring for damage(replace as
needed).
• Land aircraft immediately and recharge flight
battery.
• Check connection from ESC to receiver.
• Check servos for damage.
• Check linkages for binding.
SPARE PARTS LIST
AHAT101
AHAT102 Mainwing set
AHAT103 Horizontal stabilizer
AHAT104 Canopy
AHAT105 Auxiliary fuel tank Set
AHAT106 Linkage rods
AHAT107 Linkage rods (arms) plastic cover
AHAT108 Cowl
AHAT109 Screw set
AHAT110 Decal set
AHAT111 Control arms
AHAT112 Ducted fan cover
AH9GP 9g servo positive
Fuselage
AHKV4500 2627-KV4500 motor
AHESC30A-1 30A ESC
AH50MM11B 50mm Ducted Fan
AHIG-T33 Integrated Gyro
This manual is the property of Pro Models and is protected by copyright ©.
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