Compass Atom 500 User manual
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.
This radio controlled helicopter model is not a toy. It is a sophisticated piece of equipment for hobby use only.
Improper operation or assembly of this product can cause serious injury or death for both operator and spectators. This
product is not recommended for use by children.
Manufacturer and Sellers assume no responsibility for using and operating this product. The customer must take
full responsibility for the safe operation of this product.
Academy of Model Aeronautics
5151 East Memorial Drive
Muncie, IN47302
Introduction /
Warning /
Warranty /
AMA Information
Compass Model Limited Warranty
The warranty covers defects in material or workmanship or missing components to the original purchaser for 30 days from
the date of purchase. Compass Model will replace or repair, at our discretion, the defective or missing component. Defec-
tive components must be returned to us prior to replacement. Any part, which has been improperly installed, abused, crash
damaged or altered by unauthorized agencies, is not covered. Under no circumstances will the buyer be entitled to conse-
quential or incidental damages. The components used in this kit are made from special materials designed for special
applications and designed strengths. We recommend that all replacement parts be original parts manufactured by Compass
Model, to ensure proper and safe operation of your model. Any part used which was manufactured by any other company
than Compass Model, VOIDS all warrantees of this product by Compass Model.
Compass Compass
Compass
Compass
Compass
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We strongly encourage all prospective and current R/C aircraft pilots to join the Academy of Model Aeronautics. The AMA is a non-
profit organization that provides services to model aircraft pilots. As an AMA member, you will receive a monthly magazine entitled
Model Aviation, as well as liability insurance plan to cover against possible accident or injury. All AMA charter aircraft clubs require
individuals to hold a current AMA sporting license prior to operation of their models.
For further information, you can contact the AMA at:
Thank you for choosing the Atom500 and welcome to Compass Model. The Atom500 has been designed to offer outstanding
performance. Simplicity is the beauty. That is the message Compass try to pass to the customer with Atom500. Same as other
compass products, Atom is powerful, stable, agile as well as accurate. The unique Compass Hyper Torque motor produces
extreme high power and high torque which provide the model a good power base. The frame layout has been designed to
create an extraordinarily rigid platform which is both durable and further improved control accuracy. The simple layout
features light weight, low parts count and raise the centre of gravity. Please read the complete manual before assembly.
Please take careful note of all precautions and assembly tips. Please also keep the manual as a reference for part numbers
and reassembly following maintenance.
Compass compass Atom
Compass Atom
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R/C Helicopter Safety /
A model helicopter must be built exactly in accordance with the assembly instructions. The kit manufacturer has spent
much time and effort refining his product to make it reliable in operation and easy to build. Vibration and stress levels are
high and all fasteners and attachments must be secure for safe operation. Safe operation is the responsibility of the buil-
der/flyer and starts with careful construction and continues with selection and installation of reliable radio equipment and
engine. The need for safety is nowhere greater than at the flying field. A number of guidelines for safe flight have been
developed by experienced flyers and are set down here. It is urged that they be read, understood and followed.
Guidelines for Safe R/C Helicopter Flight
•Fly only at approved flying fields and obey field regulations.
•Follow frequency control procedures. Interference can be dangerous to all.
•Obtain assistance from experienced pilots.
•The Guidance provided by experienced pilots is valuable and sometimes necessary.
•Know your radio. Check all transmitter functions before each flight.
•Be aware that rotating blades are very dangerous and can cause serious injury.
•Never fly near or above spectators or other modelers.
•Do not fly r/c helicopter models near buildings, high voltage cables, trees or other obstacles.
•If a beginner, get help trimming the model first and flight training later.
•Don’t “track” the main blades by holding the tail boom. This is a temptation to builders who cannot hover yet
and is very dangerous.
•Follow all recommended maintenance procedures for model, radio and motor.
Warranty Procedures /
If service is required, send the component in question (if not missing) together with a photocopy of your bill of
sale and an accurate description of the problem and part. Ship components fully insured and prepaid. Compass
Model is not responsible for any shipping damages. We will, at our discretion notify you of any costs involved
you are required to pay all postage, shipping and insurance charges.
Compass
compass
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In
,
Length: up to 430mm
：430
Necessary items /
In the box /
This model is packed according to assembling steps. Do not open all the bags at one time.
Open only one bag for each step of assemply when building.
Step 1 Step 2 Step 3 Long items
Tail Set Step 4 Step 5 Rotor Head
Step 7 Step 11
bearing retainer
Frame set
6 channel or up radio and receiver. 3 mini servos.
1 gyro with rudder servo. 6S li-po
battery 2100mah~3300mah. or 2 pack
3s li-po battery with same capacity.
6
2100
。3
，1。6
~3300.
!"2#3。
60A ESC
Mini Servos
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010 20 30 40
1SERVO /
M x8 Self-Tapping Bolt2.5
Mini Servo
Servo Nut
M2.5x16 Self-Tapping Bolt
2.5MM Washer
Standard Size
Rudder Servo
2.5MM Washer
Optional Hole for
Mini Servo as Rudder
Note: All Servos are installed between
the 2 frames. The Self-Tapping Bolts for
3 main servos are installed between the
2 frames, while the Self-Tapping Bolt for
Rudder Servo are installed from out side
of the frames.
No Servo nut is needed for the 3
Main servos.
M2.5x16 Self-Tapping
Bolt X 4
2.5mm Washer X 16
.
3
.
.
Use AB Glue
A
B
Blue Threadlock should be applied.
Greace
Mishandling due to failure to follow these instructions may result in damage, personal injury or danger.
Symbols & assembling /
* Always apply blue Threadlock when fixing Bolts on Metal parts.
* Always apply green retainer where bearings has to be fit into metal parts.
* Do not over-tighten self tapping screws into plastic parts or you will strip the threads!
&
G
Plastic Spacer
M2.5x10 Self Taping Bolt
The Plastic Spacer here is to space the
elevator servo so that the servo arm is in
the same line with the swash plate ball.
.
M2.5x8 Self-Tapping
Bolt X 8
The Servo Rubber is not needed
here. .
M2.5x10 Self-Tapping
Bolt X 4
Bearing Retainer
Plastic Spacer
Servo Nut
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010 20 30 40
Use AB Glue
M x SelfTaping Bolt310
M3x5 Set Screw
2Landing Gear /
Struts
Skid Cap
Skid
A
B
M3 x10 Self-Tapping
Bolt X 4
M3x5 Set Screw X 4
A
B
010 20 30 40
3Tail /
M x Cap Head Bolt340
M3 Nylon Nut
M3x25 Cap Head Bolt
M3 Nylon Nut
Vertical Fin
Vertical Fin Mount
Tail Set
Boom
M3x40 Cap Head Bolt
x4
Crimping belt damages the tensile cords and will result in
premature failure.
M3 Washer x2
M3 Nylon Lock Nut
x6
M2.5x6 Cap Head Bolt
x2
Use Threadlock
M3 Washer
M2.5x6 Cap Head Bolt
Make sure the Boom is pushed to the bottom
of the Gear Box before tighting the M2.5x6 bolts.
Mx!"#$,%& 2.5 6'
().
M x Self-Tapping Bolt2.5 8
M2.5 x8 Self-Tapping
Bolt X 2
Washout the Logo direction on the boom.
*+(/7'9:.
right
;<
Wrong
=>
no play here
?@A
play here
@A
Bearing Retainerer
The bolt here is only to compress the
boom, do not screw the whole way in.
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Make sure mast collar is tightened
securely onto the mast. Double-check
to make sure the mast lock collar is
properly seated onto the mast and
main shaft can not move up or down.
Note : The mast collar is installed
underneath the upper bearing block.
At this point you will notice that the belt twists 90 degrees as it runs trough the tail
boom. Care must be taken to assure that the belt is twisted in the correct direction. The
key to this is to make sure the tail rotor rotates backward when the main rotor rotates
in the proper direction. If the tail rotor rotates incorrectly, simply pull out the main shaft
and twist the belt in the other direction.
M2.5 Nylon Lock Nut
x1
M2.5x10 Cap Head Bolt
x1
M2.5x18 Cap Head Bolt
x1
010 20 30 40
Main Gear /
Use Threadlock
Team Tip :
Check tail rotor direction. Top
rotor blade moves to rear
4
M Nylon Nut2.5
M x Cap Head Bolt2.5 18
Main Shaft
M x Cap Head Bolt2.5 10
MastCollar
Loose the 2 Bolt here, adjust the distances
between the pinion gear and main gear.
Then fix them tightly with thread lock.
，
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Gear Backlash Adjustment:
For smooth operation and performance, it is necessary to adjust the gear
backlash properly. Excess gear backlash can cause premature gear wear and
damage. Insufficient gear backlash can cause vibration, as well as
overheating of the motor and speed controller. Adjust the gear backlash by
placing one piece of paper between the gears to set the distance. When the
bolts are secure, remove the paper and test the gear backlash to insure that
there is a slight amount of free movement between the gears.
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Paddle
Main Shaft
Main Grip
Apply Grease Here
Larger ID
(IN)
Smaller ID
(OUT)
Thrust Bearing Direction
Adjust so that each side has exactly the same length
010 20 30 40
M2.5x16 Cap Head
Bolt x1
Use Threadlock
Main grips are factory preassembled, in case of reassem-
bling, be sure to note correct placement of large/small I.D.
washers during assembly.
5Rotor,Washout & Swashplate/
,.
M3x3 Set Screw
M x Cap Head Bolt2.5 16
M Nut2.5
M2.5 x8 Seftapping Bolt
M2.5 x8 Self-Tapping
Bolt X 4
M3x3 Set Screw x2
M2.5 Nut x1
Paddle Insert
Thread
No Thread
Fly Bar From this side
Thread
Thread
Paddle Insert
(Standard Version)
Washer Here
Ball without Washer
For Atom Standard. Swash Plate Inner Ring
has 2 balls equipped with spacer, 2 without.
Connect the 2 with spacers with washout
links.
，4
，。
Washout Link
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010 20 30 40
6Equipment illustration /
Esc
Receiver
6S Battery
Vecro Tape
Aileron
/
Pitch
Elevator
/
Rudder
Brushless Motor
ESC
/
/
00 10 20 30 40
00
The following linkage lengths indications are basic values which could vary
depend on used servos. Some fine adjustments are still needed in following setup
steps. ,.
7Linkage/
19mmx2
26mmx2
29mm
4.5mm
Please cut mm from
each ball links.
4.5
4.5.
4.5mm
Please cut mm from
each ball links.
4.5
4.5.
Need Buy Seperately
BEC power line
BEC
Ch5
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Servo Arms
Servo Screw
For Sport Flight
For 3D Use
39.5mmx2 40.5mm
45.5mm
2mmx6 Cap Head
Bolt
Stainless Balls
Do not apply plier to resize Balllinks. Pliers could
cause hidden damage to balllinks and hence result
in failure when operation.
,
00 10 20 30 40
00
8Electronic Setup/
Pitch
General Flight
Throttle Pitch
5100% 13 deg
485%
370% 4~5deg
235%
10% -4deg
3D Style 3D
Throttle Pitch
5 100% 13deg
4 100% 6.5deg
3 100% 0 deg
2 100% -6.5deg
1 100% -13deg
0%
20%
40%
60%
80%
100%
12345
0%
20%
40%
60%
80%
100%
12345
Throttle Curve
Throttle Curve
If you find the Balllinks are too tight
suggest use a Balllink sizing tool.
,
.
5°
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000 10 20 30 40
Parallel
Parallel
Make sure the flybar control arm and paddle are in line as in the diagram.
A) Turn on the radio, set throttle to middle position for 0 degree. Use the subtrim
in radio program to adjust all the 3 servo to get control horn level.
,(0), 3
.
subtrim
9Setup /
horizontal
horizontal
JR Futaba
Swash Type SWH
S3 120 SR3
Aile Elev Pitch
45% 50% 45%
Swash Type Setting
On Atom 500, pitch range can be set as
much as 26deg. If pitch is set too high,
flight time will be shorter.
26，
。
?Esc Setup :
?
?
Mid Timing:
No Brakes:
Very Soft Start:
Leave About 0.1mm Play between the
flybar collar and the flybar holder.
This could reduce the chance to snap
the flybar when flying.
0.1，
。
Attion:
motor must be unplaged from ESC.
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D) Adjust the link from swash plate to mixing arm to set mixing arm 5
deg downwards.
5。
E)Adjust the link from mixing arm to main grip
to set main blade pitch to 0 deg.
。
0deg pitch 0
F)At rudder middle stick, set rudder servo 90 deg to the tail
link. And set Tail Blade to 7 deg pitch.
90,7.
B) Adjust the link from the servo arms to the swash plate to level the swash plate.
Use a compass swash Plate Tool as guide. 。!"#
$%&'(。
Horizontal
06-0501 Swash Plate Tool
$%
Horizontal
c) Set Washout Arms level.
*+。
90 deg
Mixing Arm
7°
5°
Use this Hole for Tail Link Ball
。
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Aileron Check
Mod 1 Mod 2 Swash PlateReaction
Tilt Left
Elevator Check
Tilt Forward
Tilt Right
Tilt Backward
Rudder Check Tail PitchPlate
Slide left Slide Right
Pitch Check
Swash Plate
Ascent
Descent
00 10 20 30 40
00
10 Servo Direction Check/
Turn on the radio, position the heli tail point to yourself. Make sure radio
is set to 120 degree ccpm mode. Move the stick and check the reaction of the
Swash Plate, Throttle and Tail Pitch Plate.Adjust radio settings accordingly.
ccpm，。! "#。$%&'()*
+-/(3456。
789:;
789
%
<= >=
9
?@
B@
<@ >@
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00 10 20 30 40
00
11 Canopy /
M x Self Tap Bolt2.5 6
Canopy
Canopy Insert
Use AB Glue
A
B
M2.5x6 Self-Tapping
Bolt X 2
Put the canopy on the body and mark the right the position
of the canopy insert.
Apply ab glue to attached the canopy insert on canopy. Then
use Self Tap Bolt fix it. ，
。，!。
00 10 20 30 40
00
12 Rotor Direction /
When main blades turn clockwise, tail blades should turn clockwise when view from the tail fin side.
If not belt is installed incorrectly.
Drill a D mm Hole here
D
6.5
" 6.5#$%
A
B
A
B
A
B
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5. Check that main blades, paddles and tail blades are installed in the right direction.
6. Check that there are no missing or damaged parts, never fly with any damaged parts.
7. Make sure all electronic devices are firmly fastened and connected.
8. Before starting the motor, make sure the IDLE switch is OFF and throttle stick is in the low position.
9. Only turn off the transmisser after turning off the receiver.
ELDI
13
010 20 30 40
Tail blades rotation direction
Copyright Compass Model 2008
As we continue to improve our products, this manual may not reflect all recent product amendments.
For more information, please refer to : www.compassmodel.com
:,, ,.
www.compassmodel.com
Pre Flight Check /
1. Ensure that receiver & transmitter battery are fully charged.
Check all bolts and screws are tight
Repeat step 10 to check all servo functions are correct.
Ensure tail and gyro direction are correctly set
。
2. . 。
3. 10 。
4. . 。
Tail moving direction
Atom Standard VS Atom R
Atom Standard Atom RVS
More Agile More Stable
Washer Here No washer
9 teeth 8 teeth
(2 extra washer
on swash plate)
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