Twister CP Gold - Airtek Hobbies

Twister CP Gold
Main rotor diameter…………………………550mm
Tail rotor diameter…………………………..125mm
Weight (without receiver & battery).…......390g (11.5oz)
1……………………………...Assembled helicopter
1 pair….. ………...Carbon Fibre main rotor blades
1 ……Twister 6 Ch. FM computer radio - installed
1…………….Twister 6 Ch. FM receiver - installed
1…………..Twister HL400 tail lock gyro - installed
4……………………..EnErg S7.5 servos - installed
1...Cyclone Ultra Cobalt brushed motor - installed
1……..Twister 20 amp speed controller - installed
1……..Twister 11.1V lithium polymer battery pack
1……Twister lithium polymer 12V DC/DC charger
1……………….Twister 240V mains power supply
1……………………………….Foam blade retainer
8………………………….AA size pencell batteries
1…………….Twister 3D Storm instruction manual
Factory assembled Completely Ready
To Fly
CCPM 120 deg flight control system for
precise performance
LBW (Low Battery Warning) system
3D flight performance without having to
High performance Cyclone Ultra Cobalt
low current draw brushed motor
Digital proportional FM transmitter with
silky smooth sticks
High quality ball bearings
High performance, low current draw
belt drive tail system
Bell Hiller mixing for quick cyclic
HL 400 tail lock (heading hold) gyro
Super lightweight construction for the
ultimate in performance
‘The Twister CP Gold has been designed as the next step up for pilots who have mastered
co-axial (twin rotor) helicopters, yet is fully aerobatic without having to upgrade’
Radio controlled model!
This high performance model
must be assembled and operated
according to the instructions.
May cause serious injury to persons or
property if not used responsibly.
Unsuitable for children under 14 years.
Preparing For Flight..………………………..
1. Unpack you Twister CP Gold..…… 4
Battery & Charger…………………..……….. 4
2. Connect Charger to Power…….…. 4
3. Connect Battery to Charger………. 4
Lithium Polymer Battery Safety……………. 5
Before Charging Li-Po Batteries….
Charging Li-Po Batteries…………..
Using Li-Po Batteries………………
Final flight preparation………………………
4. Installing the Battery………………. 5
5. Rotor Blades Check……………….. 5
6. Linkage Check……………………... 5
7. Switch on Transmitter……………..
8. Range Check………………………. 6
Control Check………………………………..
Advanced Flying Features………………….
Flight Training Guide………………………..
Troubleshooting……………………………... 9
Spare Parts & Option Parts………………… 10
Twister CP Gold Exploded View………….. 14
Vital Safety Information
If you have no experience flying R/C
helicopters, it is highly recommended
that you seek advice from your supplier
and/or an experienced R/C helicopter
Read all instructions carefully prior to
assembling and before flying the helicopter. Seek advice should any information be unclear. You assume all risk
and responsibility when using this
Keep well clear of rotating blades to
avoid serious injury.
Never wear loose clothing when operating model helicopters
Always wear protective eyewear when
operating model helicopters.
Only fly in areas where it is safe to do
so and in areas where the flying of R/C
models is permitted.
Do not fly near people, animals, buildings or any obstacles.
Do not fly your model at head height.
Do not fly your model within 5 metres
of yourself or any person.
The Twister CP Gold has been designed to be strong and easy to repair, however, should the helicopter crash, there is a chance that parts will be damaged. In the event of a crash, it is important that
the helicopter be thoroughly checked before undertaking further flights to ensure that no danger
could be posed to yourself, bystanders or property. If the structural integrity of any part is in doubt,
the part should be replaced. Crash damage is NOT covered by warranty.
Use the exploded view at the rear of this manual, along with the listed part numbers, and contact
your hobby supplier for the required parts.
J.Perkins Distribution Ltd and Model Engines (Aust.) Pty. Ltd. Guarantee this product to be free from
manufacturing and assembly defects for a period of one year from the time of purchase. This does not affect
your statuary 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
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.
Model Engines (Aust.) Pty. Ltd., Noble Park, Victoria 3174, Australia.
All rights reserved. E&OE
Twister CP Gold
About the Twister CP Gold
New to R/C Helicopter Flying?
The Twister CP Gold is designed as the next
step up for pilots who have mastered co-axial
helicopters. It is fully aerobatic and capable of
3D manoeuvres without the need for upgrades.
While the Twister CP Gold is designed as the
next step up for pilots from co-axial helicopters,
we would recommend, however, that you seek
some advice from an experienced helicopter
pilot for the initial flights.
The Twister CP Gold’s state of the art 120
degree CCPM control system ensures precise
control. This control system combined with
carbon fibre main rotor blades, gives the Twister
CP Gold its stable flight characteristics.
Features such as ‘Collective Pitch’ and ‘CCPM’
will be unfamiliar to the helicopter pilot who has
only flown co-axial (twin rotor) helicopters.
Collective Pitch, although more complex than
Fixed Pitch designs, is what gives the CP Gold
its stability and aerobatic ability.
The high performance, low current draw Ultra
Cobalt brushed motor, powers the Twister CP
Gold through aerobatics with ease. The use of
high quality ball races throughout the helicopter
and the belt driven tail drive system, not only
ensures smooth operation, but by reducing
friction, flight times increase as a result of the
lower current draw.
Factory Assembled
The Twister CP Gold comes assembled with
four EnErg S7.5 servos installed along with a
Twister 6 channel FM computer radio with 4
model memories. A Cyclone Ultra Cobalt
brushed motor, Twister 20 amp speed controller
and a Twister HL400 tail lock gyro are also fully
installed at the factory.
Spare Parts
In the UK, please observe the principles of
safety as outlined by the governing body for
model flying, the British Model Flying Association (BMFA).
Radio Control Models are not toys and serious
injury to persons or damage to property can
result if not used in a responsible manner.
In flight the main rotor blades can approach
2000rpm, therefore never fly closer than 5
metres and never fly your model at head height.
Spare parts are readily available through your
local hobby retailer. Use the exploded diagram
and parts list in this manual to assist you in
ordering the correct parts.
In Australia, please observe the guidelines for
the safe operation of radio control models as
outlined by the Model Aircraft Association of
Australia (MAAA).
Twister CP Gold
Plug the white 4 pin connector on the flight
battery into the socket on the right side of
the charger.
The green LED will light and the red
‘POWER’ LED will glow solid red.
When the battery is fully charged, the
green LED will go out.
The battery can now be disconnected from
the charger and is ready for use.
Carefully remove the model and other
items from the packaging.
Inspect the model to check that nothing is
damaged and that all components have
been included.
Insert the 8 x AA batteries into the
transmitter (refer to the Twister RC radio
Do not leave battery unattended when
Do not attempt to charge a warm
battery. Allow battery to cool before
Disconnect battery immediately should
battery become hot to touch.
The charger is designed to automatically
charge the Li-Po flight battery in around 1
hour from a discharged state.
The charger is powered by the supplied
240V AC power supply or alternatively, a
12V DC power source such as a 12V gel
cell or car battery can be used.
Plug the connector from the AC power
adapter or the 12V DC power lead into the
socket on the right hand side of the
charger. See below:
If using a 12VDC power source, connect
the red alligator clamp to the positive (+)
terminal and the black alligator clamp to
the negative (-) terminal.
The ‘POWER’ LED will flash red.
Twister CP Gold
Before Charging Li-Po Batteries
Before charging your battery, check for any
visible damage e.g. check if the battery has
expanded or swollen in size or if the cells
have been punctured.
If any of the above is true: DO NOT
Charging Li-Po Batteries
ONLY use a charger designed to charge
Lithium Polymer batteries. NEVER use
any other type of charger.
Never charge a hot battery.
Always allow battery to cool after flying before recharging.
Never attempt to charge at a faster rate
than recommended in the instructions.
Check the battery cell count matches the
charger cell count switch (if fitted)
Never charge unattended. Always stay with
the battery whilst charging in case of overheating and risk of fire.
Only charge on non-flammable surfaces
e.g. concrete floor (outside) or pyrex or
ceramic container. NEVER charge inside
a car!
Stop charging immediately should battery
become hot to touch during charging.
In the event of a fire, use sand to extinguish the flames. DO NOT USE WATER
Secure the battery to the mounting tray
with the Velcro strap provided. See below:
Unfold the main rotor blades to the flying
position as shown below.
Check the rotor blade bolt tension. Blades
should move with slight pressure applied.
Using Li-Po Batteries
Do not modify or change any part of the
battery or lead.
Do not remove the heat shrink covering
Any modification may damage the battery
and invalidate any warranty claim.
Do not place battery near fires or any high
temperature object or device.
Do not charge batteries whilst driving.
Do not store batteries in a motor vehicle.
Do not allow batteries to get wet or submerged in any liquid.
Do not short circuit batteries.
Should skin or eyes come in contact with
the electrolyte, rinse thoroughly with water
and seek Medical assistance.
Check that all linkages and connectors are
attached and that rotating parts rotate
Make sure that all linkages move freely
with no binding or tightness. Free up any
linkages that feel too tight.
The Twister CP Gold is available with
either a Mode 1 or Mode 2 transmitter.
The Twister RC Radio Instruction
manual shows the layout of both
transmitter types.
Move the throttle stick and throttle trim to
the lowest (low throttle position) position.
Centre the trim levers on the other 3
Twister CP Gold
Make sure that the ‘3D’ (idle up) switch and
the ‘throttle hold’ switch are pushed fully
forward (towards the back of the
Fully extend the transmitter antenna.
Switch on the transmitter.
Turn on the helicopter by connecting the
connector from the speed controller to the
matching connector on the battery as
Make sure that you are well clear of the
main and tail rotors and the throttle
stick and trim are at the lowest position.
Aileron (roll cyclic) control
View the helicopter from behind and move
the aileron stick (roll cyclic) left and right.
This the right hand stick on both Mode 1
and Mode 2 transmitters. The swash plate
of the helicopter should match the stick
movements e.g. the swash plate will tilt
right with the stick moved to the right.
Should the swash plate move on the opposite direction, this function will need to be
reversed. Refer to the Twister R/C radio
Elevator (fore & aft cyclic) control
Now move the elevator stick (fore & aft
cyclic). This is the left stick on a Mode 1
transmitter and right hand stick on a Mode
2 transmitter. When the stick is pushed forward, the swash plate should tilt forward.
Should the swash plate move in the oppo•
site direction, again refer to the radio instructions on reversing this function.
Rudder (yaw) control
Move the rudder stick left and right. This is
the left hand stick on both Mode 1 and
Mode 2 transmitters and check the direction of the tail rotors.
Do not move the helicopter for a few
seconds. This allows the gyro to
The tail servo will twitch and the indicator
light on the gyro will illuminate when the
gyro is armed.
NOTE - always disconnect the
helicopter battery before turning off the
Keep hands, clothing, eyes, animals and children well clear when connecting power to
this model and when flying it!
Left rudder applied
Check that the controls operate without
any interference at a minimum distance of
50 metres.
Do not operate the model with a collapsed or
partially collapsed transmitter antenna. This
can greatly reduce the range and cause a
loss of control over the model.
Right rudder applied
Twister CP Gold
Throttle Control
Slowly move the throttle stick forward.
3D/Idle Up Switch cont.
The effect of Idle Up is to provide high
Right hand stick on Mode 1 and left hand
stick on Mode 2 transmitters.
Move the stick until the main rotor blades
begin to rotate slowly and then throttle
Your Twister CP Gold is now ready for
power at low stick positions thus providing
a constant rotor speed during aerobatic
Do not use the 3D/Idle Up switch unless
you are an experienced RC helicopter pilot.
Flybar Weights
The Twister CP Gold is equipped with
The Flying Area
If this is your first conventional rotor heli-
adjustable flybar weights. As the weights
are moved further out, stability increases.
Moving the flybar weights inboard will
make the helicopter more responsive to
cyclic commands.
If the flybar weights are moved, the balance of the flybar MUST be checked after
the adjustment. To do this, all linkages to
the flybar must be released and then observe if the flybar seesaw unit falls a particular way.
Adjust the weights until the unit is
copter, it is recommended that the initial
flights be carried out in conditions with very
little or no wind.
Make sure that the flying area is clear of
obstacles and people while coming to
terms with the flight characteristics and feel
of the Twister CP Gold.
Make sure all the controls are operating
correctly and position yourself approximately 2-3 metres behind the helicopter
and slightly off to one side so that the nose
is visible.
A smooth surface is also recommended.
Pro Tip
When flying the helicopter, you must always watch
the nose. If the nose yaws to the left then right rudder
(tail rotor) must be applied to correct this.
Flybar weights
3D/Idle Up Switch
The 3D/Idle Up switch on the transmitter is
Rotor Spin Up
Watch the nose of the helicopter and
used when performing advanced aerobatic
manoeuvres. When the switch is activated
(pulled forward), a new throttle curve and
pitch curve is applied.
With Idle Up on, collective pitch travel is
increased at low stick, whilst at the same
time, power is never allowed to fall below
60% over the lower half of the throttle stick
slowly apply just enough throttle that the
helicopter becomes light on its landing
Observe whether or not the helicopter
tends to tilt forwards, backwards, left or
Use the trim levers on the transmitter to
correct any of these tendencies. E.g. if the
helicopter tilts forward, apply some back
elevator trim; if the helicopter tilts to the
right, apply some left aileron trim.
Pro Tip
At this stage we want the helicopter to remain on the
ground. Only apply throttle gently and in small
amounts. Applying too much throttle too quickly can
cause the helicopter to leap in the air making it extremely difficult to keep control.
3D/Idle Up Switch
Twister CP Gold
Going For A Walk
The helicopter should now be trimmed and
you should be in a position to start learning
to take your Twister CP Gold ‘for a walk’.
These first few flights should be made with
the helicopter on the ground and on a
smooth surface.
Apply throttle until the helicopter is light on
its skids and add a small amount of
forward elevator (fore & aft cyclic control).
Apply enough throttle that the helicopter
starts to move slowly forwards. Watch for
any change of direction and be ready to
use the transmitter controls to correct this.
Reduce throttle immediately should you
have any difficulties maintaining control.
This ‘walking technique’ is a safe way of
developing the ability of automatically
being able to apply the correct transmitter
Practice this until applying the correct
transmitter input becomes second nature.
Hovering and Manoeovres
As your co-ordination and anticipation im-
The First Hop
Having practiced and mastered the
As your hand/eye co-ordination skills
develop, you will be able to pick up and
correct any drift, roll and yaw tendencies
almost immediately. Your ‘hops’ will become larger and smoother and will know
‘walking technique’, you are ready to make
the first ‘hop’ into the air.
This is similar to ‘walking’ the helicopter,
but with slightly more throttle applied.
While walking the helicopter, apply more
throttle until the helicopter leaves the
Reduce thottle immediately to settle the
helicopter back on the ground. You have
completed your first hop!
Keep the helicopter moving forward while
practicing these ‘hops’
You will notice that as the helicopter
breaks free from the ground, it may attempt
to accelerate quickly and in an unforeseen
This is the natural affect of the helicopter
freeing itself from the friction of the ground.
Many inexperienced pilots feel they only
have limited control after the helicopter
leaves the ground, however, with practice,
they find that they further develop their
ability to automatically apply the correct
control input that was first learnt by
‘walking’ the helicopter.
Helicopters by nature do not sit perfectly
still in a hover and some control input is
always required.
proves you can now attempt a sustained
Hovering is similar to ‘hopping’ but with the
throttle sustained and the forward motion
Practice hovering until confident with the
basic handling of the helicopter.
Once becoming proficient in hovering,
practice applying the different control inputs to slowly move the helicopter around.
E.g. apply rudder (yaw) control to rotate
the helicopter; apply aileron (roll cyclic)
control to make the helicopter drift right or
If you get into trouble at any stage, reduce
the throttle and land.
Forward Flight
As your proficiency and confidence grows
you will want to progress into basic forward
A much larger area is required. Outside
with no wind is ideal. Remember, due to its
light weight, any breeze can greatly affect
the performance of the Twister CP Gold.
A flight simulator is a great teaching aid for
learning ’Nose In’ manoeuvres. With the
helicopter facing you, some of the controls
effectively become reversed, easily catching out the inexperienced pilot.
Twister CP Gold
Solution 1 - Out of balance main blades.
If vibration of tail boom or undercarriage is
noticeable, the most likely problem will be out of
balance main blades. To cure this, balance the
main blades as follows: Remove the complete
rotor head from the main shaft. Support the head
assembly by placing the flybar paddles on 2
glass tumblers or similar. Observe which blade
falls lowest and add some tape to the underside
tip of the higher blade. Adjust until the blades are
level and re-fit the rotor head assembly.
Solution 1 - Check throttle stick and trim
lever are both fully down when turning on the
Solution 2 - Check all electrical connections.
Check that all electrical connectors are seated
properly. The receiver crystal should also be
checked to make sure that it is seated securely
in its socket.
Solution 2 - Bent main shaft.
The tail boom and undercarriage will vibrate if
the main shaft is bent. Replace the main shaft
and gear if you suspect that the main shaft is
Solution 1 - This sometimes happens if your
rotor blades are flying too low (not enough pitch).
The helicopter will sometimes take off, but appears to be low on power. This is nearly always
because one blade is flying too low. If this is the
case, follow the procedure outlined in Solution 4
Solution 3 - Main blades too tight.
The helicopter can also vibrate if the main blade
retaining bolts are too tight. Loosen the bolts
slightly and re-try.
Solution 2 - Gear mesh too tight.
This is rectified by loosening off the motor retaining screws and pushing the motor away from the
main gear slightly. Re-tighten the mounting
screws to secure the motor in its new position.
Solution 4 - Blade tracking is out.
Sometimes, the rotor blades will fly at different
heights and this will cause vibration. When the
helicopter rotor disc is viewed in flight, the red
tipped blade may fly at a different height to the
other main blade. The blades are running ‘out of
track’. Note which blade is lower. Land the helicopter and lengthen the pitch control link
(#6601210) of the lower flying blade. This increases the blades angle of attack which will
make the blade fly higher. Test fly and check the
blade tracking once again. Re-adjust if necessary to get the blades to run ’in track’ as close as
The LBW (Low Battery Warning) System is designed to alert the pilot when it is time to land
and recharge the Lithium Polymer flight battery.
It is important that the pilot land the helicopter as soon as possible after the LBW light
comes on.
Solution 5 - Flybar paddles out of balance.
Check that the distances from the centre hub out
to the flybar paddles are the same for both paddles. Adjust the flybar position by loosening the
flybar retaining collars associated with part
#6601190 and sliding the flybar through the centre hub. Re-tighten the retaining collars.
This will prevent the battery being damaged due
to over discharging.
Twister CP Gold
6601385 Aluminium Ball & Fixing Screw
6601364 Heatsink
6601361 Bell Mixer Arm & Pushrod Set
6601376 Horizontal Fin
6601370 Landing Skid
6601372 Tail Drive Belt
6600298 Li-Po Battery
6601367 Belt Guide Set
6600402 Main Rotor Blades
6601382 Belt Pulley Set
6601366 Main Frame
6601387 Twister CP Gold Canopy
6601369 Main Gear Set & Shaft Set
6601386 Canopy Mounting Rod Set
6600341 ESC
6601388 Main Shaft
Twister CP Gold
6601365 Ultra Cobalt Motor
6601363 Swashplate
6601368 Receiver & Battery Mount Set
6601362 Tail Blades
6601378 Tail Servo & Horizontal Fin Mount Set
6600381 Main Blade Grip Set
4460102 HL 400 Gyro
6601383 Tail Blades Control Arm
7710550 Twister RC 6Ch Receiver
6601384 Tail Blade Grip Set
7712115 Super Micro Digital 7.5g Servo
6601373 Tail Boom Support Rods
6601380 Tail Centre Hub
6601390 Velcro Strap
6601381 Tail Shaft Set
6601371 Tail Boom
Twister CP Gold
6601375 Tail Hardware Set
6601150 Centre Hub & Spindle Shaft
6601379 Tail Shaft Mount
6601330 Main Shaft Retaining Collar
6601374 Tail Servo Pushrod Set
6601377 Vertical Fin
6600320 Twister 3 Cell Li-Po Balance Charger
6601190 Flybar
6600330 Twister 240VAC Power Supply (3 pin)
6601230 Servo Pushrod & Link Set
6600331 Twister 240VAC Power Supply (2 pin)
6601210 Pitch Control Link Set
6601340 Flybar Weights
6601160 Flybar Hub Bearings Cradle
6601180 Flybar Control Unit
6600855 Head Retaining Pin
Twister CP Gold
6601320 Swash Plate to Flybar Links
6601200 Flybar Paddles
7710500 Twister Computerized Transmitter
6600750 Bearings 3 x 6 x 2.5 (2)
6600850 Allen Key, Cable Ties & Servo Tape Set
6601360 Washer
6601395 Bearing 3 x 6 x 2.5
6601396 Bearing 2 x 5 x 2.5
6601389 Carbon Fibre Tail Boom
Twister CP Gold
Twister CP Gold Exploded View
Twister CP Gold
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