Compass Model Odin90 User manual

GearRatio 1 8 4 8
BladeLength Up to mm
Enginesize
Take off Weight no fuel kg
Rotor Diameter: 1590mm
Length: 1330mm
: : :
:
:
- ( ):
.0 .710
91 4.08
*
.*
*
.*
*
*
*
* - .
* +/-
.*
*
.*
* .
Electric Cooling System
Q
*SuperLight
Hardenedhollowmainshaft
Dualpintailrotorpitchsystem
Thrustbearingsbuilt in tailgrips
CCPMswashcontrols
uicktobuild
Hardcore 3D outofbox
FullyBallRaced
13 collectivepitchrangeforextreme 3D
Extratoughframedesign
High efficiencydirectbeltdrivesystem
High CG design
o
Vibrationinsolationenginemount.
As we continue to improve our products.This manual may not reflect all recent product amendments. Please refer to the received product and
check our website::,,
, . .
www.compassmodel.com
www.compassmodel.com
CCPM
3D
13
1 8 4 8
mm
Assembly Manual
Version 1.0
Created : 11/24/2008

.
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
 。30， 
。 。，，
， 。 ，。
， 。
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 a 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 Odin90 and welcome to Compass Model. The Odin90 has been designed to offer outstanding
performance. A unique electric cooling system saves engine horse power which is used for the main blades. The Odin uses
anti-viberation system applied in the Knight 3D to minimize the potential damage vibration could cause. With a take-off
weight close to 9 pounds, Odin90 is one of the lightest 90 size nitro heli model in the world. Odin inherited the same strong
frame design and precise head system shared with all Compass Model products. With one of the best power to weight ratio,
Odin90 can easily handle any 3D maneuver. The Odin90 is powerful, stable, agile as well as accurate, all traits shared by all
other Compass Model products. The simple layout features light weight, low parts count and raised 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 。，  
， ，。  
。，。
Odin90

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.
•Only turn off the radio after the engine is shut down.
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
，  ，
 。 。
。 。
。。。 
。。
：
*，。
*， ，。
*，。
*。
*，。
*，。
*
*，，，
*，。
*。
*，。
*，。

In
,
Necessary items /
90 size Engine
90 
90 size Muffler
90 
Li-Po Battery 2 or 3 Cells
2100mah or up
 23 2100
A R C Heli Model used
Radio, 5 servos and 1 Gyro
is needed.
/
Length Up to 710mm
710
Note a BEC is provided with the kit, please read the
BEC manual carefuly. Some servo may require
heavy duty BEC which you have to buy extra.
:
，
!"#$%&'(，)*+,./45678
;<。
Tail Blades 105mm
105

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.
Canopy Step 1 Step2 Step 3
Step3 Tool Step 4 Frame Set
Rotor Head Step 5 Step 6 Step 9
Esc & Ubec Long Items

010 20 30 40
Use AB Glue 
M x SelfTaping Bolt310

M3x5 Set Screw

1Landing Gear / 
Struts 
Skid Cap 
Skid 
A
B
M3 x10 Self-Tapping
Bolt X 4 
M3x5 Set Screw X 4

A
B
M3x16 Cap Head Bolt
x8 
3mm Washer X 8

M3x16 Cap Head Bolt

3mm Washer

Blue Threadlock

010 20 30 40
2Tail /
M3x30 Cap Head Bolt

M3 Nylon Nut

Vertical Fin

Vertical Fin Mount

Tail Set 
Boom 
M3x35 Cap Head Bolt
x2 
Crimping belt damages the tensile cords and will result in
premature failure.
M3 Washer x4

M3 Nylon Lock Nut
x8 
M2.5x6 Cap Head Bolt
x2 
Use Threadlock
M3 Washer

M2.5x6 Cap Head
Bolt 
M x Self-Tapping Bolt2.5 8

Washout the Logo direction on the boom.
.
right

Wrong

no play here

play here

M x Cap Head Bolt340

M3 Nylon Nut

M3x25 Cap Head Bolt

M3x35 Cap Head Bolt

Horizontal Fin

M3x40 Cap Head Bolt
x4 
M3x25 Cap Head Bolt
x4 
M2.5 x8 Self-Tapping
Bolt X 4 
Make sure the Boom is pushed to the
bottom of the Gear Box before tighting
up the M2.5 Bolt.
M

 2.5。
Use AB Glue 
A
B
A
B
Apply AB Glue on Boom Support .
.
The bolt here is only to
compress the boom, do not screw
the whole way in.
，
。

010 20 30 40
Engine / 
Use Threadlock
3
M3x8 Cap Head Bolt
x4 
M3 Washer x2

M3 Nylon Lock Nut
x2 
M4x16 Cap Head Bolt
x8 
M3x10 Botton Head Bolt

Clutch Set

Steel Collar

Engine Tool

M4x16 Botton Head Bolt

Turn in this way
against Piston pressure
.
Use AB Glue
A
B
A
B
Starter
!
Governor Sensor Here
"#$%&'()
M4x16 Cap Head Bolt

4mm Washer

M4x16 Cap Head Bolt

M3x8 Cap
Head Bolt

3mm Washer

M3x8 Cap Head
Bolt 
3mm Nylon Nut
*+
M3 Washer x4

M3x10 Button Head Bolt
x2 
M4x16 Button Head Bolt
x2 

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.
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.
M3 Nylon Lock Nut
x1 
M3x10 Cap Head Bolt
x1 
M3x25 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
3

mm Nylon Nut
M3x25 Cap Head Bolt

Main Shaft
 MastCollar

Note : The mast collar is installed
underneath the upper bearing block.
M3x10 Cap Head Bolt


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
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

M3x Cap Head
Bolt
12



M3x3 Set Screw x2
 Paddle Insert

Thread

No Thread

Fly Bar From this side
 Thread

Thread

Paddle Insert

Washout Link

M3x25 Cap Head
Bolt  3

mm Nylon nut
M3 Nylon Lock Nut
x1 
M3x12 Cap Head Bolt
x2 
M3x25 Cap Head Bolt
x1 
M3x5 Set Screw x2

M3x3 Set Screw


010 20 30 40
6SERVO /
2.5MM Washer
M2.5x16 Self-Tapping
Bolt X 20 
2.5mm Washer X 20


Servo Nut x16

11 mm
M x16 Self-Tapping
Bolt
2.5

M Cap Head Bolt2

M x16 Self-Tapping
Bolt
2.5

Servo Horn

M x16 Self-Tapping Bolt2.5

2.5MM Washer

Rudder Servo

Boom

M2x6 Cap Head Bolt
X 9 
All control balls should to set at 11mm to
the center of the servo horn.
11
!.
7Equipment illustration / 
Pitch Servo
!
Elevator Servo
"#
Aileron Servo
$%
Throttle Servo

Bec
&'
Li-Po Battery
()*
Receiver
+,
Fan ESC
/0&3
Rudder Servo




Regulator Gyro

ESC
BEC
/
/


 Ch6
Throttle

Li-Po Battery

Cooling Fan
8Phasing Setting / 
Main Grip Washout Arm !"Ѕ
Phasing Control lRing #$%
Boom&'
Parallel to
the boom
.
Main Grip
Washout Arm !"Ѕ
Phasing Control lRing #$
Boom&
.
Get the right phasing adjustment by turning the phasing control ring
until the Washout Arms and Main Grips both parallel to the Boom.

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. ,.
9Linkage/
26mmx2
4.5mm
Please cut mm from
each ball links.
4.5
4.5.
46.5mmx2 70mmx2
,
If you find the Balllinks are too tight
suggest use a Balllink sizing tool.
,
.
42.5mmx2 61mm
126mmx4 170mmx2
Do not apply plier to resize Ball
Links. Pliers could cause hidden damage
to Ball Links and hence result in failure
when operation.
，。
Ball Link Sizing Tool

Be aware that the Ball Link
Sizing Tool is very sharp.
Do not oversize the ball link.
,
.

10 Electronic Setup/
Pitch

General Flight 
Throttle Pitch
5100% 13 deg
485%
370% 4~5deg
235%
10% -5deg
3D Style 3D 
Throttle Pitch
5 100% 13deg
4 87% 6.5deg
3 75% 0 deg
2 87% -6.5deg
1 100% -13deg
0%
20%
40%
60%
80%
100%
12345
0%
20%
40%
60%
80%
100%
12345
Throttle Curve
Throttle Curve
Parallel

Parallel
Make sure the flybar control arm and paddle are in line as in the diagram.
11 Setup / 
JR Futaba
Swash Type SWH
S3 120 SR3
Aile Elev Pitch
60% 60% 55%
Swash Type Setting

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，
。

A) Turn on the radio, set throttle to middle position for 0 degree. Use the subtrim in radio program
to adjust all the servo to get control horn to the right angle.
SUBTRIM”,0,.“  
。
Note: The 2 Push-pull link rods are not
necessarily parallel, but must be the
same length. :
,.
1
8
0
°
B)Next is to adjust the link from servo to the T Arm and I Arm so that the T Arm is Horizontal and the
Inner Arm is Horizontal. Use the 2 Guide Holes on the frame to make sure the 2 Arms are Horizontal.
TT, .  .
Horizontal

Inner Arm

Guide Holes

T Arm
T I Arm
I
c)Next adjust the links from T Arms to Swash Plate
to level Swash Plate. A compass Swash Plate Tool
can be applied here as a guide.
T .
.
Washout Arm

SwashPlate

Horizontal

06-0501 Swash Plate
Tool 
Horizontal

D)Set theWashout Arms horizontal.
.
3
°
E)Mixing Arm is set 3deg down to the flybar. 
3
Flybar 
Mixing Arm
F) Install the main blade and set it to 0 deg pitch.
0.

G At the low throttle stick and the throttle trim
the carburetor hole should be completely close. At
full throttle stick, carburetor hole should be
completely open. Adjust the ATV in radio, or/and the
control horn position on the engine to achieve above
requirement. Make sure the servo does not bind at
any traveling point.
),
，。
，。 。
H)At Rudder Middle Stick, Set Rudder Servo 90 degree to the tail link And Set Tail Blade to 7 deg Pitch.
,90,7.
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
120 ccpm
.,.
.
,.  . 
.
Aileron Check 
Mod 1 Mod 2 Swash Plate Reaction

Elevator Check 
Tilt

Forward
Tilt Left

Tilt Right

Tilt

Backward
12 Servo Direction Check/
7°

Rudder Check 
Pitch Check 
Swash Plate

Ascent 
Descent 
Mod 1 Mod 2 Swash Plate Reaction

00 10 20 30 40
00
13 Canopy /
M x Self Tap Bolt2.5 6

Drill a D17 hole here for Starter, watch out the position.
 17，!"，#$%&。D
Canopy Insert ()!*
Use AB Glue
A
B
M2.5x6 Self-Tapping
Bolt X 2 
Put the canopy on the body and mark the position of the canopy
insert.
Apply ab glue to attached the canopy insert on canopy. Then use
Self Tap Bolt fix it. +(),-/03，48()!*%&。9
:;<=>()!*，?@9E8。
Drill a D mm Hole here
D
6.5
 6.5FG
A
B
A
B
A
B
Tail PitchPlate
Slide left Slide Right
JK LK


14 Rotor Direction /
Pre-flight Check /
When Main Blades turn clockwise tail blades should turn clockwise when view from the Tail Fin
side If not the belt is installed incorrectly
,
..
,,.,.
1 Ensure that receiver transmitter battery are fully charged
2 Check all bolts and screws are tight
3 Repeat step 11 to check all Servo functions are correct
4 Ensure Tail Gyro direction are correctly set
. & . .
. ..
. .  .
. + ..
12
Tail Moving Direction

Tail Blades
Rotation Direction

5 Check that the Main Blades Paddles and Tail Blades are installed in the right direction
7 Check that there are no missing or damaged parts never fly with any damaged parts
8 Make sure all electronic devices are firmly fastened and connected
9 Only turn off the transmitter after turning off the receiver
., .
,.
.
.,.
...
. .
 ,.
..
 .
6 Always hold the Rotor Head when starting the engine..

Compass Model Hong Kong Ltd().
()
www compassmodel com..
Odin 90 Instruction Manual
Copyrights Nov 2008@,