Twister Aggressor2.4 Setup guide

This high performance model must be assembled according to the
instructions. May cause serious injury to persons or property if not
used responsibly or if operated without due caution.
Unsuitable for children under 14 years old.
TWISTER AGGRESSOR2.4
READY TO FLY 4 CHANNEL R/C HELICOPTER
Assembly & Flight Training guide
TWISTER
Aggressor 2.4
ADVANCED
FHSS
2.4GHz
Planet•
rock-solid r/c
SPECIFICATIONS
Main rotor diameter ..............................................................................340mm
Length ......................................................................................................411mm
Radio control ............................................ Planet 5 2.4GHz Advanced FHSS
Flying weight ..........................................................Around 220g (7.7 ounces)
Cyclic control ................................................. hi-torque EnErG micro servos
On-board electronics ..................................... Twister 3-in-1 & R6M 2.4GHz
On-board power ..................................7.4V Li-polymer (with cell balancer)
Charger ........................... 240V power supply + DC balancing fast charger
Flight time .................................................... Up to 10 minutes (approximate)
Main drive ................................Twin motors & ballraced steel main shafts
Gyro ........................................................................................... Piezo dual rate
CONTENTS
TEST-FLOWN & FLIGHT-GUARANTEED helicopter .................................... 1
Planet 5 2.4GHz Advanced FHSS transmitter .............................................. 1
EnErG micro servos – factory installed ........................................................ 2
Planet R6M 2.4GHz receiver – factory installed ........................................ 1
Twister 3-in-1 unit – factory installed ........................................................... 1
Twister 7.4V Lithium polymer battery pack .................................................. 1
Twister Lithium polymer 12V DC/DC Charger .............................................. 1
Twister 240v mains power supply ................................................................. 1
Spare main blades (upper & lower sets) ..................................................... 1
AA pencell transmitter batteries ................................................................... 4

VITAL SAFETY INFO
Please read all instructions carefully before using this
model. If any information in this manual is unclear,
please contact your supplier for help.
Please note especially the potential dangers associated
with the rotating parts in this model:
DANGER—Wear protective eyewear when operating
model helicopters!
DANGER—Do not wear loose clothing or ties!
DANGER—Keep well clear of rotating blades!
DANGER—Never fly near children or animals!
ABOUT THE FLYING AREA
REQUIRED
The Twister Aggressor2.4 is designed primarily for
indoor use—or outdoors in flat calm conditions. A
hard, flat surface clear of all obstacles with an area of
around 400 square feet is the minimum recommended
requirement. However, you should fly only where it is
safe to do so.
ABOUT TRAINING,
CRASHES & SPARE PARTS
The Twister Aggressor2.4 has been designed to be
strong and very easy to repair, however, the helicopter is
not invulnerable and most people will tip their helicopter
over or break parts during their flying career. This is
quite normal. All parts are available as spares from
your supplier. Study the exploded view of the helicopter
carefully to understand the relationship between parts
and how to replace them if necessary. Crash damage is
not covered by warranty.
GUARANTEE/WARRANTY
J. Perkins Distribution Ltd and Model Engines (Aust.) Pty. Ltd.
guarantee this product to be free of manufacturing and assembly
defects for a period of one year from time of purchase. This does
not affect your statutory rights. This warranty is not valid for any
damage or subsequent damage arising as a result of a crash,
misuse, modification or for damage or consequential damage
arising as a result of failure to observe the procedures outlined
in this manual. Operation of this model is carried out entirely
at the risk of the operator. Please note that, whilst every effort
is made to ensure the accuracy of instructions and material
included with this product, mistakes can occur and neither J.
Perkins Distribution Ltd/Model Engines (Aust.) Pty. Ltd. nor it’s
distributors will be held liable for any loss or damage arising
from the use of this model or for any loss or damage arising
from omissions or inaccuracies in the associated instructions or
materials included with this product.
We reserve the right to modify the design of this product,
contents and manuals without prior notification.
© 2008 J Perkins Distribution Ltd, Lenham, Kent, UK ME17 2DL.
www.jperkinsdistribution.co.uk
Model Engines (Aust.) Pty. Ltd., Noble Park, Victoria 3174,
Australia. www.modelengines.com.au. All rights reserved. E&OE.
CONTENTS
Guarantee/warranty ...................................... 2
Introduction .................................................... 3
New to R/C helicopters? .............................. 3
General safety concerning helicopters .... 4
Welcome ......................................................... 4
A. Kit contents ........................................ 4
B. Transmitter part names .................... 5
C. Reversing switches ........................... 5
Flight preparation .......................................... 6
A. Lithium polymer flight battery .......... 6
B. Charging the flight battery ............... 6
C. Fitting the flight battery ..................... 7
D. Linkage checks .................................. 8
Transmitter layout throttle left (mode 2) .... 8
Stick and trim control summary ........... 8
Transmitter layout throttle right (mode 1) . 9
Stick and trim control summary ........... 9
Power checks and connecting up ........... 10
Flight controls mode 2 ................................ 13
A. flight controls layout ....................... 13
B. Right stick unit functions ................ 14
C. Left stick unit functions .................. 14
Flight controls mode 1 ................................ 15
A. Flight controls layout ...................... 15
B. Right stick unit functions ................ 16
C. Left stick unit functions .................. 17
Fine tuning of yaw control ......................... 18
3 in 1 unit adjustors .............................. 18
Damage prevention features ..................... 18
How does a helicopter fly? ........................ 19
Flight training guide .................................... 20
The flying area ...................................... 20
Positioning your Twister
Aggressor2.4 ......................................... 20
Increase throttle gently ....................... 20
Walking the helicopter ........................ 20
Taking the first 'hop' ............................ 21
Hovering and manoeuvres ................. 21
Beyond the hover ................................. 21
Troubleshooting ........................................... 22
Lithium polymer battery safety ................. 22
Binding the receiver to the transmitter ... 23
Parts listing .................................................. 24
Exploded view ............................................. 26
Option parts .................................................. 27

INTRODUCTION
Thank you for buying one of the most complete,
most stable, high quality scale RC helicopters
available today.
The helicopter is supplied with the Planet 5
Advanced FHSS 2.4GHz R/C system factory fitted.
This new radio removes the need for crystals
and allows dozens of pilots to fly simultaneously
together - effortlessly. The Advanced FHSS system
automatically takes control at switch-on.
It almost hovers by itself!
The co-axial rotors and ingenious design of this
helicopter make RC helicopter flight accessible
and practical to virtually anyone interested in RC
helicopters!
The Twister Aggressor2.4 demonstrates remarkable
hovering stability and will help guide pilots into
successful flight in the shortest possible time.
Test-flown, Flight Guaranteed and Ready to Fly!
The Twister Aggressor2.4 is ready to fly and is
designed for use indoors and outdoors (in calm
conditions) in an adequate and safe space. The
helicopter is designed by expert engineers and
assembled at the factory. It is strong and designed
with numerous innovative safety and damage
prevention features. The Twister Aggressor2.4
uses the highest quality drive, power and control
systems.
Above all, this is one of the most fun-packed
models we have ever flown and we hope you will
enjoy flying it as much as we have!
State-of-the-art electronics in one package
The '3-in-1' on-board electronics package includes
piezo gyro, electronic mixers and speed controllers
PLUS a computer fail-safe, an LED system check,
and a motor safe-start facility.
Damage prevention and safe-start systems
included
The fail-safe cuts power to the main motor in the
event of transmitter failure while the safe-start only
allows starting when the throttle stick and throttle
trim are low–so there is no danger of connecting
the flight battery and thereby inadvertently
powering up the main rotors.
Integral LBW (Low Battery Warning) beacon
helps prevent damage to your helicopter &
Lipo battery by flashing when it’s time to land &
recharge!
Revolutionary MOPS (Motor Overload Protection
System)
helps prevents damage to your motors &
electronics by killing the motors automatically on
blade-stalling tipovers—then automatically re-
energising the system some seconds later!
Professional Planet 5 2.4GHz R/C included
The transmitter and receiver have been designed
for precision helicopter and aircraft flying and
feature 2.4GHz Adanced FHSS control and high
quality adjustable height stick units (convertible
between Mode II (throttle left) and Mode I (throttle
right)).
The transmitter incorporates full 4-function control
via two dual axis control sticks and a 5th function
for lights/retracts, etc, socket for an optional Flight
Simulator cable set, reversing switches, moulded
ergonomic rear and side grips, carry handle,
neckstrap hang point and a charging socket
(for charging optional rechargeable transmitter
batteries).
Spares
All spare parts are available for the Twister
Aggressor2.4 and can be purchased through model
and hobby outlets. Some FREE spares are included
which will help you through your learning phase.
NEW TO R/C
HELICOPTERS?
The model is not a toy and requires preparation
before flight. If you are new to RC helicopters,
please do not expect to be able to open the box and
immediately 'fly around'. RC helicopters are fun to
fly but require some time and training in order to be
flown successfully.
If this is not what you were expecting, we advise
you not to buy this model.
Although the Twister Aggressor2.4 is easy to fly,
please note that we do not guarantee that by
following the information included with this product
you will be bound to achieve successful helicopter
flight. Neither do we guarantee you will not break
anything!!

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TWISTER
Aggressor 2.4
Twister Aggressor2.4
GENERAL SAFETY CONCERNING HELICOPTERS
Please be aware that rotating blades can inflict painful and possibly serious injuries to people, animals or
objects should the rotors strike someone or something.
We recommend people use protective eyewear when operating this model. and that you read the manual
carefully before operating your Twister Aggressor2.4.
Radio controlled models themselves can reach high speeds and cover significant distances rapidly if
control is lost. This model is capable of speeds of around 20mph (30kph) or greater.
The model must therefore be used responsibly and with great care generally. It is not a toy.
The model operates on the 2.4GHz radio band using the latest generation Frequency Hopping Spread
Spectrum (FHSS) technology, thereby providing probably the best interference rejection of any R/C system
available today. This technology eliminates pilot frequency worries as the radio encodes it's own unique
frequency data at startup in a manner similar to a bluetooth device.
In the UK, we recommend you observe the model flying safety code of the British Model Flying Association
which can be found at the the following address:
http://www.bmfa.org
In Australasia, please contact your hobby supplier.
WELCOME
A. KIT CONTENTS
▼ 1. Carefully remove the model and other items from the packaging and check all items are included.
▼ 32. Insert the 8AA alkaline batteries into the transmitter battery compartment being careful to observe
battery polarity.
Although the Twister Aggressor2.4 is strong, all model helicopters require careful handling and a delicate
touch. In particular, take great care with the electrical connections to and from the '3-in-1' control unit and
also the main rotor associated parts.
SAFETY NOTE!
Do not shorten the receiver aerial or modify it in any way.
LBW - Low Battery Warning beacon
Flybar assembly
Main shaft
Main blades upper
DC balancer charger
Li-po battery
Tx batteries
Mains power supply
Spare main blades
Transmitter

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Planet•
ADVANCED
FHSS
2.4GHz
B. TRANSMITTER PART NAMES
The battery compartment is in the rear of the transmitter.
Aerial
Battery status LCD
Control trim
Dual axis control stick
ON/OFF switch
Reversing switch cover
C. REVERSING SWITCHES
Reversing switches are used to reverse the direction of the four flying controls.
They are factory-set and should NOT be switched for flying your Twister Aggressor2.4.
They may be useful if you use other models or fly the many models available within R/C flight simulators.
The reversing switches are located on the front panel of the transmitter.
The correct position of the switches is shown below:
NORMAL
REVERSE
Ail
Ele
Thr
Rud

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TWISTER
Aggressor 2.4
Twister Aggressor2.4
FLIGHT PREPARATION
A. LITHIUM POLYMER FLIGHT BATTERY
Charging connector only
Power connector only
The Lithium polymer (Li-po) flight battery is a high power battery designed to give a flight time of up to 10
minutes per charge. It is supplied in a partially charged state.
As well as a red JST polarised lead (for connection later to the 3-in-1 board), the battery is also fitted with a
white 3-pin polarised connector. This is the charge lead.
When you have finished flying for the day, recharge the battery and always leave it in a partially or fully
charged state. Never leave your battery in a discharged state as this may damage the battery and shorten
it's life.
The battery must be recharged when the LBW beacon on the top of the helicopter starts to flash blue, or if
you notice the helicopter is losing power. At this point, land and recharge the battery.
Do not be tempted to run the battery past this stage as you will be over-discharging and the battery may be
damaged.
WARNING!
We recommend that you use only the supplied Twister charger with this battery.
WARNING!
Over-discharging will shorten the life of the battery or damage it. Stop flying immediately the LBW (Low
Battery Warning) beacon starts flashing and recharge the battery.
WARNING!
Do not short circuit—battery may explode!
PLEASE READ THE SAFETY PROCEDURES FOR HANDLING LI-POLY BATTERIES ON PAGE 23 BEFORE
PROCEEDING FURTHER.
B. CHARGING THE FLIGHT BATTERY
The charger is designed to automatically charge the Li-Po battery in about 1 hour from a discharged state.
The 12V DC automatic charger is powered by the 240 Volt power supply illustrated above.
Alternatively, you can use a 12 volt sealed modelling battery to power the DC automatic charger.

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ADVANCED
FHSS
2.4GHz
▼ 1. Connect the charger to your power source. The 'POWER' LED will flash red.
▼ 2. Plug the 3-pin connector on your Li-po battery into the socket in the right side of the charger.
The green LED will light and the red LED will glow solid red.
▼33. When the battery is fully charged the green LED goes out. Disconnect the battery from the charger.
▼ 4. Disconnect the power source from the charger. Your Li-po battery is ready for use.
C. FITTING THE FLIGHT BATTERY
▼ 1. Firmly attach the self-adhesive velcro tab supplied to the end of the battery and slide the charged
pack into the rear part of the battery holder taking care to slide the battery beneath the two rear
retainers only - but do not connect the power lead yet!
▼ 2. Push the battery forward to engage it securely beneath the front pair of retainers too.
Ensure the battery is slid all the way home and retained with velcro fastening (attached to the battery and
battery holder).

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TWISTER
Aggressor 2.4
Twister Aggressor2.4
D. LINKAGE CHECKS
▼ 1. Check that all linkages and connectors are attached and that rotating parts are free to rotate
smoothly.
▼ 2. Check that all linkages move freely with no binding or stiffness. Free off any linkages that show any
sign of tightness or binding.
TRANSMITTER LAYOUT THROTTLE LEFT (MODE 2)
STICK AND TRIM CONTROL SUMMARY
Planet•
T5
T0804A
Throttle trim Fore and aft cyclic trim
Yaw trim Roll cyclic trim
Throttle/Yaw
stick Cyclic control
stick
▼ 11. Move the throttle (left stick) and throttle trim of your transmitter to the lowest (low throttle) position
as shown above.
▼ 22. Centre the trim levers of the 3 other transmitter functions.
▼ 33. Extend the transmitter aerial fully.
▼ 44. Switch on the transmitter.

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ADVANCED
FHSS
2.4GHz
TRANSMITTER LAYOUT THROTTLE RIGHT (MODE 1)
STICK AND TRIM CONTROL SUMMARY
Planet•
T5
T0804A
Fore and aft cyclic trim Throttle trim
Yaw trim Roll cyclic trim
Fore and aft/Yaw
stick Throttle/Roll
stick
▼ 11. Move the throttle (right stick) and throttle trim of your transmitter to the lowest (low throttle)
position as shown above.
▼ 22. Centre the trim levers of the 3 other transmitter functions.
▼ 33. Extend the transmitter aerial fully.
▼ 44. Switch on the transmitter.

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Aggressor 2.4
Twister Aggressor2.4
POWER CHECKS AND CONNECTING UP
A. CONNECTING THE LI-PO BATTERY
▼ 11. Plug the battery connector into the matching battery lead emerging from the side of the canopy.
WARNING!
Keep hands, clothing, eyes, animals and children well clear when connecting power to this model or
when flying it!
▼ 22. After the receiver has completed satisfactory systems checks, the on-board LED will glow orange
continuously.
WARNING!
Do not operate the throttle yet!

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ADVANCED
FHSS
2.4GHz
B. SWASHPLATE LEVEL CHECK
(MODE 2 TRANSMITTER)
The next stage requires you check control servo operation. Proceed as follows:
Adjust cyclic trims to level swashplate
(Mode 2 transmitter shown)
▼ The helicopter swashplate should be horizontal when viewed from the front and from the side of the
helicopter. If it is not, adjust it's position by operating the cyclic trims. See pics above.
The ball joints snapped to the swashplate can be unsnapped and screwed/unscrewed if further adjustment
is needed after the model has flown.
C. SWASHPLATE ROLL CHECK
(MODE 2 TRANSMITTER)
▼ Roll cyclic - Move the transmitter roll (aileron) stick to the left.
The swashplate will tilt as indicated above.

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Aggressor 2.4
Twister Aggressor2.4
D. SWASHPLATE ELEVATOR CHECK
(MODE 2 TRANSMITTER)
▼ Fore and aft cyclic - Move the fore and aft (elevator) stick forward.
The swashplate will tilt as indicated above.
E. THROTTLE CHECK
(MODE 2 TRANSMITTER)
▼ Throttle - Slowly push the throttle stick forward by a small amount and check that the main rotors
start to rotate.
Then immediately throttle back.
F. YAW CHECK
▼ Yaw - Tail control is achieved by altering the relative speed of the main rotors and can only be
checked just before take-off as the helicopter becomes light on its skids.

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ADVANCED
FHSS
2.4GHz
G. RANGE & POWER CHECK
▼ It is important to check the transmitter will operate the model satisfactorily at a safe range.
▼ In order to do this place your model on the ground and walk away from the model whilst operating
the swashplate controls.
Check that the servos in the helicopter operate without interference up to a distance of 50 metres.
▼ Check that the transmitter LED screen is displaying a normal voltage and not the low voltage
warning message.
Your Twister Aggressor2.4 is ready for flight, but...
WARNING!
...If you are not an experienced R/C model helicopter pilot you must read the ENTIRE manual before flying.
WARNING!
Do not fly at 50 metres distance or greater. At distances of greater than 50 metres, it will become
impossible to see your Twister Aggressor2.4.
We strongly recommend you fly no further away than 15 metres.
WARNING!
After finishing flying, always disconnect the battery from the helicopter FIRST. Then switch off the
transmitter. Do not switch off the transmitter first and disconnect battery second.
WARNING!
You must take care and ensure the flying area is large enough and contains no obstacles (such as
children, animals or furniture), which could be hit while you are flying your Twister Aggressor2.4.
FLIGHT CONTROLS MODE 2
A. FLIGHT CONTROLS LAYOUT
Rotate
nose right
Rotate
nose left
Climb
Descend
Crab
right
Crab
left
Forwards
Backwards
▼ Each dual axis stick unit of your transmitter controls 2 helicopter functions (complete with trimmers
on each function) giving you control about all 4 axes of flight). See above.

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TWISTER
Aggressor 2.4
Twister Aggressor2.4
B. RIGHT STICK UNIT FUNCTIONS
▼ The right stick operates the 'cyclic' steering controls and moves the helicopter forwards/
backwards and to the left/right in the horizontal plane. See below:
Crab
right
Crab
left
Forwards
Backwards
Crab
right
Crab
left
Forwards
Backwards
C. LEFT STICK UNIT FUNCTIONS
▼ The left stick operates throttle (main rotor speed) and yaw control.
Throttle is increased to climb the helicopter and reduced to descend:
Climb
Descend
▼ The model hovers at approximately half power (at the middle stick position):
Hover at
this
position

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ADVANCED
FHSS
2.4GHz
▼ Moving the stick to the left or right will rotate the nose to left or right. This is called 'yaw control'.
See below:
Rotate
nose right
Rotate
nose left
Rotate
nose right
Rotate
nose left
Climb
Descend
FLIGHT CONTROLS MODE 1
A. FLIGHT CONTROLS LAYOUT
Rotate
nose right
Rotate
nose left
Forwards
Backwards
Crab
right
Crab
left
Climb
Descend
▼ Each dual axis stick unit of your transmitter controls 2 helicopter functions (complete with trimmers
on each function) giving you control about all 4 axes of fl ight).

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TWISTER
Aggressor 2.4
Twister Aggressor2.4
B. RIGHT STICK UNIT FUNCTIONS
▼ The right stick operates the throttle (main rotor speed) and the 'cyclic' steering which moves the
helicopter to the left/right in the horizontal plane. See below:
Crab
right
Crab
left
Climb
Descend
Crab
right
Crab
left
▼ The right stick also operates the throttle (main rotor speed).
Throttle is increased to climb the helicopter and reduced to descend:
Climb
Descend
▼ The model hovers at approximately half power (at the middle stick position):
Hover at
this
position

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ADVANCED
FHSS
2.4GHz
C. LEFT STICK UNIT FUNCTIONS
▼ The left stick operates both yaw control and the forwards/backwards 'cyclic' steering controls.
▼ Moving the stick to the left or right will rotate the nose to left or right. This is called 'yaw control'.
See below:
Rotate
nose right
Rotate
nose left
Rotate
nose right
Rotate
nose left
Forwards
Backwards
▼ Moving the stick forwards or backwards will cause the helicopter to move forwards or backwards.
See below:
Forwards
Backwards

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Aggressor 2.4
Twister Aggressor2.4
FINE TUNING OF YAW CONTROL
3 IN 1 UNIT ADJUSTORS
The 2 trimmers on the front of the '3-in-1' unit are factory adjusted and usually require no adjustment. The
status LED is next to the trimmers. The trimmers perform these functions:
▼ Gyro gain. The right trimmer (GAIN) adjusts the amount of gyro tail stabilisation from 0 to 100%. 90%
is usually the best setting.
▼ Yaw trimmer. The left trimmer adjusts tail trim (centring of the tailboom).
NB if you adjust this trimmer you must restart the helicopter in order to observe an effect on yaw
trim.
Adjustment of the yaw trimmer has no effect until the li-po battery is disconnected then reconnected and
the system restarted in the usual manner.
WARNING!
If your model tips over or crashes you should close the throttle immediately, disconnect the battery and
carefully inspect the model for damage. Make any adjustments/repairs as necessary.
Crash damage is not covered by warranty.
DAMAGE PREVENTION FEATURES
Unique features built into your Twister Aggressor2.4 are designed to prevent accidental damage to the
power, drive and electronics systems.
LBW (LOW BATTERY WARNING) BEACON
The LED on the cabin of the helicopter will flash blue when the battery needs charging.
You must land immediately and recharge the battery. If you ignore the LBW beacon you risk damaging your
battery!
WARNING!
Damage caused to the battery is not covered by warranty.
MOPS (MOTOR OVERLOAD PROTECTION SYSTEM)
In the event of a crash or tip-over where the blades become stalled, MOPS cuts power to the drive motors
and electronics in order to prevent damage to these components.
If you crash the helicopter badly causing a blade stall, MOPS will kill the power automatically. You should
return the transmitter throttle stick to the low power position. The system will automatically re-arm some
seconds later.

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ADVANCED
FHSS
2.4GHz
HOW DOES A HELICOPTER FLY?
A hovering helicopter is controlled about 4 axes; yaw, pitch, roll and height. Your transmitter has 2 dual-axis
precision stick units with two controls on each stick.
In a throttle left (mode 2) transmitter
▼ The left stick controls height (climb or descent) and tail rotor controls yaw (left or right).
▼ The right stick operates the cyclic steering controls which are used to pitch the helicopter nose
up/nose down (fore and aft) and to roll the helicopter left or right.
In a throttle right (mode 1) transmitter
▼ The right stick controls height (climb or descent) and cyclic aileron control to roll the helicopter left
or right.
▼ The left stick operates the tail rotor controls (yaw left or yaw right) and the fore and aft cyclic pitch
controls which are used to pitch the helicopter nose up/nose down.
The revolutionary contra-rotating sytem used in the Twister Aggressor2.4 transforms helicopter flight by
making control so easy that the helicopter almost flys itself!
Transmitter stick movements
Helicopters require relatively small control inputs of relatively small duration. Do not move the sticks to
extreme positions. A delicate touch is required on the sticks. The sticks should be allowed to return to
neutral almost immediately after a control input is made. If you watch an experienced pilot hovering his
helicopter, you will see that his transmitter sticks hardly move. This is the goal you will be working towards
in this guide.
Height control
A helicopters rotating wings - the rotor blades, generate lift, in the same way that a propeller generates
thrust. The lift generated by the main rotor blades increases as rotor speed rises causing the helicopter to
climb. Conversely as the main rotor speed is reduced, the helicopter descends.
This method of helicopter height control is called 'fixed pitch'.
Height is managed using the throttle stick of your transmitter.
Push forward on the throttle stick to climb, pull back to descend.
Yaw control
Yaw control is achieved by altering the speed of one main rotor relative to the other which causes a
change in the torque generated by the main rotor and hence a rotation to left or right about the main rotor
shaft.
When a helicopter is in the hover it can be yawed left or right.
Push the rudder stick left to yaw the nose of the helicopter to the left and push to the right to yaw the nose
right.
Your Twister Aggressor2.4 helicopter is fitted with a micro piezo gyro and electronic mixing system which
automatically helps stabilise the tail making for much easier flight.
Steering control - fore and aft cyclic
When hovering, a brief forward push on the cyclic control stick will effectively tilt the rotor disc forward
causing the helicopter to move off in that direction. Release the stick pressure gently to stop it. If you pull
the stick back, you start flying backwards.
Steering control - roll cyclic
When hovering, a brief right control stick movement will roll the rotor disc to the right and the helicopter
will start moving to the right. By releasing the stick, any right drift or movement will be arrested or reduced.
Mastering the hover
Both experienced model and full-size helicopter pilots in the hover will gently 'nudge' the cyclic controls
automatically in order to keep their helicopter in one spot and prevent it from moving away from that spot.
A large part of the initial learning phase in helicopter flight is about mastering the cyclic controls and
learning to hover. Control commands will become 'instinctive' when you have 'mastered' the hover.

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TWISTER
Aggressor 2.4
Twister Aggressor2.4
FLIGHT TRAINING GUIDE
THE FLYING AREA
The flying area should be indoors in a large room or a hall or office. In this room you should have all doors
closed as any wind can affect the movement of the Twister Aggressor2.4.
Make sure the take-off floor has a smooth surface rather than carpet which can trip up the Twister
Aggressor2.4 during ground handling.
WARNING!
You should be aware that the main rotor blades spin at a high rpm and are capable of inflicting serious
damage to objects, people and animals.
You must take care when you are flying and make sure there are no children or animals in the room or
flying area.
In addition, make sure the flying area is large enough and contains no obstacles (such as furniture)
which could be hit while you are learning to come to terms with the flight characteristics of your Twister
Aggressor2.4.
POSITIONING YOUR TWISTER AGGRESSOR2.4
First, double check that all the controls are working and operating correctly.
Place the model in the middle of the room.
Position yourself at least 2 metres behind the helicopter and slightly off to one side so that you are able to
see the nose of the helicopter.
Useful tip ........................... Please note when flying that you should always watch the nose of the helicopter-
rather than the tail. For example, if the nose of the helicopter yaws to the left the tail swings right, therefore
you must apply right tail rotor to correct this by pushing the yaw stick to the right.
INCREASE THROTTLE GENTLY
Watch the nose and apply just enough throttle until the model becomes light on its skids.
Useful tip ........................... All helicopters exhibit a degree of instability when approaching take-off as friction
from the ground is reduced as the helicopter gets nearer to 'unsticking' from the surface.
Observe whether or not the helicopter is tending to move forwards or backwards.
If it tilts forward, you will need to apply rear elevator (rear cyclic) trim to correct. And vice versa if the
Twister Aggressor2.4 tends to tilt backwards towards you.
Observe the helicopter about the roll axis and adjust the trims in the same way–if it tends to roll or hop to
the left, apply a little right roll trim and vice versa.
Adjust the trims until the Twister Aggressor2.4 shows no detectable forward, backwards or sideways drift
tendencies.
Useful tip ........................... When applying throttle, you must apply it gently and in small amounts.
At this stage the Twister Aggressor2.4 MUST STAY ON THE GROUND!
Too much throttle will cause the helicopter to leave the ground and you may have difficulty in bringing it
under control quickly enough to avoid tipping it over.
WARNING!
Too much throttle applied too quickly will cause your helicopter to leap rapidly and uncontrollably into
the air!
Never apply too much throttle too quickly.
WALKING THE HELICOPTER
The helicopter should now be trimmed and you should be in a position to start learning to 'take your Twister
Aggressor2.4 for a walk'.
These first flights should be made with the Twister Aggressor2.4 in contact with the ground at all times.
Apply just enough power to make the helicopter light on the skids and add a few clicks of forward trim to tilt
the rotor disc forwards.
Apply enough power so that the machine starts to move slowly forwards. Watch for any change of
direction of the model and use the controls to correct.
At this point, you will be able to check yaw operation. Applying left yaw will tend to swing the nose to the