Oxy Heli OXY4-MAX Edition 380 User manual

380-Instruction Manual
revision 2

INDEX
Chapter 1 - Specifications .....................................................................................................................................................................................................................................................................................
Chapter 2 - Important Notes ....................................................................................................................................................................................................................................................................................
Chapter 3 - Required Tools for Assembly ...............................................................................................................................................................................................................................................................
Chapter 4 - What's Inside The Box .........................................................................................................................................................................................................................................................................
Chapter 5 - Pinion Selection & RPM .......................................................................................................................................................................................................................................................................
Chapter 6 - Tail Assembly .......................................................................................................................................................................................................................................................................................
Chapter 7 - Main Frame Assembly .........................................................................................................................................................................................................................................................................
Chapter 8 - Align and Lock Frame Panel ................................................................................................................................................................................................................................................................
Chapter 9 - Transmission Assembly .......................................................................................................................................................................................................................................................................
Chapter 10 - Belt Tension & Adjustment .................................................................................................................................................................................................................................................................
Chapter 11 - Main Rotor Assembly .........................................................................................................................................................................................................................................................................
Chapter 12 - ESC Installation .................................................................................................................................................................................................................................................................................
Chapter 13 - Flybarless Installation ........................................................................................................................................................................................................................................................................
Chapter 14 - Servo & Servo Rod Prepareration .....................................................................................................................................................................................................................................................
Chapter 15 - Cylic Servo Installation ......................................................................................................................................................................................................................................................................
Chapter 16 - Tail Servo Installation ........................................................................................................................................................................................................................................................................
Chapter 17 - Landing Gear & Battery Installation ...................................................................................................................................................................................................................................................
Chapter 18 - Main & Tail Blades Installation ...........................................................................................................................................................................................................................................................
Chapter 19 - Adjustment Servo with Leveler ..........................................................................................................................................................................................................................................................
Chapter 20 - Exploded View ...................................................................................................................................................................................................................................................................................
page 2
page 3
page 4
page 5 - 6
page 7
page 8 - 13
page 14 - 18
page 19
page 20-21
page 22
page 23-25
page 26
page 27
page 28
page 29
page 30
page 31
page 31
page 32-33
page 34-37
page 1

776mm
850mm
212mm
199mm
Chapter 1, Specifications
page 2
- Visit the Oxy Heli web site www.oxyheli.com to download the latest version of the manual.
- Inside Box 3 you will find your serial number card. Please take a moment to visit the Oxy Heli web site and follow the instructions to register your helicopter and serial number.
- It is important you take few minutes to register your helicopter and serial number with us. This is the only way to be in contact with us to receive news, promotional information and technical tips.
- We will also choose five serial numbers each year that will win a discount coupon worth 200USD each to spend at the Oxy Heli or Lynx Heli web sites.
- Thank you for your purchase, and we wish you the best enjoyment with your new Oxy 4 Helicopter.
VERY IMPORTANT NOTE:
-Standard main rotor diameter
-Standard main blade length
-Main Grip Clamping
-Standard tail rotor diameter
-Standard tail blade length
-Standard Main Pulley
-Standard tail Pulley
-Tail Blade Clamping
-Weight
-Maximum motor size
-Maximum battery size
-Recommend battery
: 850mm (with 383mm blades).
: 383mm
: M3 / 6 mm root.
: 199 mm.
: 70 mm.
: 88T
: 24T
: M2.5 / 3 mm root.
: 800g (ready to fly excluding batteries)
: diameter 41mm.
: length 110mm, height 51mm, width 36mm, weight 380 gr
: max size.....

IMPORTANT NOTE:
This model helicopter has been designed and produced to be a high performance 3D machine. With its simple design and low parts count, pilots of all skill levels will appreciate its easy repairability. This is not a toy.
Please take care assembling the model, and take care and responsibility when you fly it. We take no responsibility for any damage or injuries, either direct or consequential, from the use of this product. If you are not
experienced in the assembly and flying of a high performance model helicopter we recommend you seek the assistance of an experienced pilot. Above all, fly safely and we hope you enjoy this model.
SAFETY GUIDELINES:
Only fly this model in areas designated for the use of model aircraft. Ensure you obtain indemnity insurance, normally available
through your National model aircraft association. Remain at least 6 meters (20 feet) from the model at all times. Never allow
spectators or animals any closer than 30 meters (100 feet) from the model.
NOTES FOR ASSEMBLY:
Please read this instruction manual fully before beginning assembly of this model helicopter. Be sure to use quality tools during the assembly process, and remember not to overtighten small fasteners. Note the following
symbols which are used in this manual. Use thread lock sparingly where indicated. If you are unsure about an assembly step, please seek the advice of an experienced pilot. Warranty on any parts is only applicable
prior to assembly of the part on the model. NONE OF THE PRE ASSEMBLED PARTS HAVE THREAD LOCK ON THE SCREWS. IS IMPORTANT TO READ AND FOLLOW THE ASSEMBLY NOTES IN EACH STEP.
INCORRECT ASSEMBLY OR NOT USING THREAD LOCK WILL CAUSE A CRASH OR INJURY.
Important note Use CA Glue Use Loctite 243 Medium Strength Use Loctite 648 Bonding Use Silicone Grease
page 3

TOOLS REQUIRED
Chapter 3, Required Tools for assembly
Small Tip - Flat Screw Driver 1.5mm Hex Screw Driver
(High quality)
One Tools Required
2mm Hex Screw Driver
(High quality)
2.5mm Hex Screw Driver
(High quality)
Needle Nose Pliers
Uniball Pliers
Caliper
page 4
Two Tools Required
Note :
We recommend high quality steel tools during assembly.
Hex Screw driver in particular must have precise Tip
Hexagonal dimension.
One Tools Required

Chapter 4, What's inside the box
ASSEMBLY PARTS FINDER HELP NOTE:
In each assembly step you will see a parts finder note. Follow
this information to find the necessary parts inside the Oxy 4 box.
page 5
Canopy, Main Gear
& Accessories Bag
Tail Boom
Tail Push Rod
Main Blade
Main Frame
Landing Gear
Box 3/ Bag 1 Vertical Fin & Tail Case Assembly
Box 3/ Bag 2 Tail Rotor Assembly
Box 3/ Bag 3 Tail Shaft Set
Box 3/ Bag 4 Tail Pitch Slider Assembly
Box 3/ Bag 5 Tail Belt Crank & Tail Belt Tensioner
Box 3/ Bag 6 Tail Belt Set
Box 3/ Bag 7 Tail Servo Mount Set
Box 3/ Bag 8 Tail Blade Set
Box 3/ Bag 16 Main Shaft Set
Box 3/ Bag 17 Main Rotor Assembly
Box 3/ Bag 18 Swash Plate Assembly
Box 3/ Bag 19 Servo Arm Set
Box 3/ Bag 20 FBL Set
Box 3/ Bag 9 Boom Clamp Set
Box 3/ Bag 10 Upper Bearing Block Assembly
Box 3/ Bag 11 Middle Bearing Block Assembly
Box 3/ Bag 12 Lower Bearing Block Assembly
Box 3/ Bag 13 Canopy Mount Set
Box 3/ Bag 14 Motor Mount Set
Box 3/ Bag 15 Battery Tray Set
Tail Set
Head Set
Frame Set
Serial Number Card

Chapter 5: Pinion Selection & RPM
page 6
OXY 4 MAX - FLY STYLE / HEAD / TAIL SETTINGS
In order to choose the best setup for your OXY4 MAX, and optimize performance, it is important to know some basic information:
1- The Motor Kv - See your motor specifications.
2- Battery Pack - (3/4S or 6S)
3- Your target head speed, If you use a head speed calculator, use 110 Teeth
for the main gear and one of the available pinions.
Or use this simple formula:
If you use governor, in order to assure that RPM will be constant during the fly, set a gear ratio to have theoric Max RPM approx 10% higher than your expected governed RPM. Your TX Throttle value should be set
between 75 to 85%
Example: Target RPM Governed at 80% throttle value = 3500, the theoric Max RPM should be approx. 3850.
This formula and value can be effected by many factors such: Battery quality, Battery C Rate, Motor Power and Fly Style. In any case can give you basic information choosing your Motor KV and Pinion (Gear Ratio).
Table below will give you basic suggestion about RPM and Tail Setting (tail pulley / tail ratio) in order to guide on your OXY4 MAX Fly Style needs.
OXY 4 MAX - ELECTRONICS AND POWER SUGGESTIONS
Head Speed Note: Although OXY 4 MAX can handle very high Head Speed, we suggest not to exceed 4000 RPM to maintain a good compromise between performances
and efficiency. Our Test confirmed that OXY4 MAX can perform form 2000 up to 4000 RPM, for more information about your personal Fly Style need and relative Head and
Tail Settings, see above Info and Table: “Fly Style - Head - Tail Settings”
CONFIGURATION EXAMPLES:
Since the OXY 4 MAX is a high performance 3D RC helicopter, we suggest using high quality electronics and power components including Servos, FBL , Motor, Battery and ESC.
Remember that OXY 4 MAX is a 380 RC Heli - use light components to maximize flight time and performance. Always consider the acceleration G force in fly, few extra gram can
become Kg during some maneuvers, compromising the best performance. Always choose the electronics and the power system suitable for your fly style, “more is not always better”!

Chapter 5: Pinion Selection & RPM
CYCLIC SERVO:
Metal Gears MICRO Servos with speed: =>0.06 sec/60 at 6V. Lynx suggestion: LX2649 - KST Lynx DS215MG-V3 Servo,
RUDDER SERVO: Metal Gear MICRO or MINI Servo with speed =>0.06 sec/60 at 6V , Specific Rudder Servo with 760µs Pulse are suggested for best tail performance. Lynx suggestion: LX2650 KST Lynx DS213X - 760µs Micro Tail Servo, 1Pc.
BATTERY: 6S - 1800mAh up to 2200mAh - 45C rate or higher. Maximum sizes and weight
: length 110mm, height 51mm, width 36mm, 380g.
ESC: 50A up to 80A - ESC can be installed in two position for the best CG configuration, under the Battery Tray or under Main Gear. Lynx suggestion: HW 60A or HW80A ESC
MOTOR with OXY 4 325 CNC Main Gear OSP-1079 and dedicated Pinions: Caliber 2520 / 2618 - 1800KV - ø3.5mm x L17.4mm Shaft. Possibility to use different motor with 3 mounting holes options:
M2.5-25mm / M3-25mm / M3-16mmm.
MOTOR with STD OXY4 MAX Main Gear and dedicated Pinions: Caliber 2822 up to 3215 - 890 to 1100KV - ø5mm x L20mm Shaft. Possibility to use different motor with 3 mounting holes options:
M2.5-25mm / M3-25mm / M3-16mmm.
Is also possible (not recommended, just possible!) replacing Main Gear and Pinion use OXY 4 325 - 360 Motors.
FBL System: The OXY 4 MAX is designed around the Ikon / Brain and Neo V-Bar Systems. Many other FBL systems can be used, depending on your personal choice. Max inner Frame dimension 33mm.
MAIN BLADE: OXY4 MAX Main Blade Zeal 380mm Energy (Kit Included), can fly with 360mm up to 386mm. Main Grips use M3 Screw and 6 mm Root.
TAIL BLADE: OXY4 MAX Tail Blade 70mm (Kit Included), can fly with 70mm up to 72mm. Tail Grip use M2.5 Screw and 3mm Root.
FROM OUR TEST HERE OUR ELECTRONICS SUGGESTIONS:
page 7

( add loctite 648 )
Important Note:
This part, for tuning reasons,
comes factory pre assembled,
it ready to us.
Important Note:
This part, for tuning reasons,
comes factory pre assembled,
it ready to use.
Important Note:
This part, for tuning reasons,
comes factory pre assembled,
it ready to use
Important Note:
This part comes pre assembled
WITHOUT thread lock. It MUST be
re-assembled with thread lock as shown.
Vertical Fin Assembly
(Box 3/Bag 1)
Vertical Fin Assembly
(Box 3/Bag 1)
Tail Rotor Assembly
(Box 3/Bag 2)
MR684_ZZC -
Radial Bearing 4x9x4
Vertical Fin
OXY0710 - OXY4
Tail Grip
MR63-X - 3X6X2
Radial Bearing
F3-6M-3x6x2.8 Thrust Bearing
OXY0723 - Tail Grip Spacer
TCEM2X4 - M2X4
Hex Cap Screw
OXY0055 -
2X3.5X0.5 Washer
OXY0050 - linkage
ball 4 X 3 M2
OXY4 - 380 Tail Hub
page 8
MR684_ZZC -
Radial Bearing 4x9x4
Right Tail Case
Chapter 6: Tail Assembly
Vertical Fin Bushing
( Add Supper Glue )
add loctite 243 into the ball
and Tail Hub threaded holes
CA glue
Loctite 648
Loctite 648
Loctite 648
Loctite 243
SMR74C_YZZ
4x7x2.5 Radial Bearing
4x6x0.1 Shim

Tail Shaft Assembly
( Box 3 / Bag 3 )
OXY0733 - 1.5x9.5 Alloy
Steel Dowel Pin
380 - Tail Shaft
OXY0726 - 24T Tail Pulley
OXY0743 - 4x6x2.5 Bushing
Tail Pitch Slider Assembly
( Box 3 / Bag 4 )
OXY0345 - Tail Pitch
Slider Bushing
OXY0714 - Tail Pitch
Slider Ring
MF106-ZZ - 6X10X3
Flange Bearing
Important Note:
This part, for tuning reasons,
comes factory pre assembled,
it ready to use.
Important note:
This part comes pre assembled
WITHOUT thread lock. It MUST be
re-assembled with thread lock as shown.
OXY0064 - Link Control
OXY0062 - 2X3X2 Bushing
TBEM2X5 - M2X5 Button Screw
page 9
Chapter 6: Tail Assembly

Tail Belt Crank Support Assembly
( Box 3 / Bag 5 )
Tail Belt Crank Support Assembly
( Box 3 / Bag 5 )
OXY0725-Pulley Guide Belt
Important Note:
This part, for tuning reasons,
comes factory pre assembled,
it ready to use. OXY0674 - Tensioner Adapter
MR63_ZZC -
3X6X2.5 Radial Bearing
OXY0727 - 3x4x2.3 Bushing
2xMF682ZZ-2X5X2.3
Flange Bearing
OXY0673-Bell Crank Support
Important Note:
This part, for tuning reasons,
comes factory pre assembled,
it ready to use
Tail Belt Crank Support Assembly
( Box 3 / Bag 5 )
OXY0057-Tail Pin Screw
OXY0724-Tail Bell Crank
page 10

0.50
Stretch Carbon Rod OXY0666-OXY4 SST Threaded Rod M2X10
OXY0716-linkage Ball M2 thread
OXY0620-Guide
Push Rod
2 x OXY0539-
Thread: Pin Screw
Note: Install the Pin Screw
and leavea gap as shown.
Step 2:
Note: to install this
pin screw rotate
counter clock wire
Note Pin Screw Thread: Pin Screw
Oxy designed the Pin Screw with
a counter clockwise thread. This
will help on the final locking
operation. Be careful to follow our
instructions to get a perfect assembly
Step 1:
Important Note:
This part, for tuning reasons,
comes factory pre assembly,
it ready to use.
Push the part inside the
boom sockets as shown
Slide the parts as shown
In order to lock the tail push rod
support, use a Flat Screw Driver
and turn clockwise. Do not
over tighten.
Step 3: Step 4: Step 4:
Chapter 6: Tail Assembly
page 11

OXY0343 - Tail Case Insert
Stretch Tail Boom Assembly
B583MXL Timing Belt
TCEM2X5 - M2X5
Hex Cap Screw
Right Tail Case Assembly
Tail Bell Crank Suppport Assembly
1 x M2X6
Hex Cap Screw
Tensioner Assembly
page 12
Fine Adjust Shims Note :
In order to give fine adjustment options,
in the Extra Hardware Bag you will find
extra shims 4X6X0.1.
Start assembly WITHOUT any
shims. If Tail Shaft has sideways play
more than 0.2mm,
add shims as required, to one side, as shown.
PRO TIPS: For best Tail performances little
side play is recommended.
Note: all screws in this step
need add loctite during assembly.
before install any shim
read carefully fine
adjustment shims note.
Vertilcal Fin Plate
TCEM2X22 - M2X22
Hex Cap Screw
OXY0648 - Tail Case Rod
2 x M2X6
Hex Cap Screw
Chapter 6: Tail Assembly
Tail Shaft Assembly
3 x M2X6
Hex Cap Screw
Loctite 243
Loctite 243
Loctite 243
Loctite 243

OXY0717 - PL
Tail Servo Support
(Box 3 / Bag 7 )
Note: don't install any screw
SCM3x3-
Set Screw M3x3
Note: Line up the
holes, so the set
screw seats correctly
into tail shaft lock hole.
Tail Bell
Crank Assembly
2 x TBEM2X6 - M2X6
Button Screw
page 13
Loctite 243 Loctite 243
Loctite 243
Tail Slider Assembly
Tail Grip Assembly

B
A
Chapter 6: Tail Assembly
TAIL BELT ASSEMBLY AND DIRECTION CHEK:
In order to check correct belt install,
move belt position A CW and
the position B must rotate CW.
Before go forward on Tail Assembly check carefully
if Belt is installed per need.
Belt MUST move without any friction.
Step 5-1:
Tail belt is showed straight coming out,
form tail boom. Be careful to
check the belt if not twisted inside the boom.
Use a flashlight to check inside the boom, for better vision.
Rotate the belt 90 degrees CCW as shown.
90 CCW Rotation.
page 14

Step 5-2:
Hold carefully Tail Belt as showed and insert
Front Boom Insert.A
OXY0450-Front
Boom Insert
(Box 3/Bag )
Press in this insert parts into
Tail Boom to help Tail Belt
doesn't twist in the next
installation step
Step 5-3:
Final Tail Belt Direction Check:
Pull Tail Belt (as shown) and check the tail hub rotates
in the direction shown. If the Tail Rotor rotates
in the wrong direction, go back to the previous
instructions and double check your assembly.
Pull Tail Belt here
page 15
Chapter 6: Tail Assembly

Boom Clamp Assembly
( Box 3/ Bag 9 )
OXY0023-2X13.5 PIN
OXY0725-Pulley Guide Belt
OXY0668-Bell Crank Bushing
SMR682Z-ZZ
2.5X6X2.6 Radial Bearing
Install the Pins into the Pulley
Guides and press completely into
the Tail Boom Clamp Socket Lips.
2 x Pulley Guide Belt Assembly
OXY0683 - Boom Clamp
OXY0660 - Hexagon Rod
Upper Bearing Block Assembly
( Box 3/ Bag 10 )
Middle Bearing Block Assembly
( Box 3/ Bag 11 )
RM126-ZZ - 6x12x4
Radial Bearing
OXY0352 - Upper Bearing Block
Important Note:
This part, for tuning reasons,
comes factory assembled,
it is ready to use.
RM126-ZZ - 6x12x4
Radial Bearing
OXY0352 - Upper Bearing Block
Important Note:
This part, for tuning reasons,
comes factory assembled,
it is ready to use.
page 16
Chapter 7: Main Frame Assembly

15
Motor Housing
fitting
41
Max 40
5mm
8.75mm
4.50
3mm
Lower Bearing Block Assembly
( Box 3/ Bag 12 )
Break Away Canopy Assembly
( Box 3/ Bag 13 )
OXY0331- Lower Bearing Block
RM126-ZZ -
6x12x4 Radial Bearing
Important Note:
This part, for tuning reasons,
comes factory assembled,
it is ready to use.
OXY0425 -
Break Away Canopy
TBES2X6 - M2X6 Self
Tapping Screw
OXY0082 - Canopy Mount
OXY0336
Motor Mount
TCEM3X8 -
M3X8 Hex Cap Screw
2xSCM4x3 -
Set Screw M4x3
Motor Assembly
( Box 3/ Bag 14 )
Pinion (19T-5mm Motor Shaft included )
page 17
Chapter 7: Main Frame Assembly
Left Righ
Make flat your Shaft for
better Set Screw Seating

Chapter 7: Main Frame Assembly
4 x all screws in this step
Note: Don't fully tighten yet.
Wait future neccessary
assembly step.
7 x M2x6 Hex Cap Screw
Note: Don't fully tighten yet.
Wait future neccessary
assembly step.
page 18
Lower Bearing
Block Assembly
OXY0711 -
Anti rotation Guide
FHSM2X4 -
M2x4 Flat Head Screw
4 x TCEM2X5 -
M2X5 Hex Cap Screw
Upper Bearing
Block Assembly
Middle Bearing
Block Assembly
OXY0661 - Main Frame
3 x OXY0665 -
Hexagon 3mm
Battery Tray
( Box 3/ Bag 15 )
6 x TCEM2X6 -
M2X6 Hex Cap Screw
M2X8 Hex Cap Screw

Motor Assembly
Boom Clamp Assembly
OXY0332 -
M2.5 Washer
OXY0663 - Boom Clamp
Stiffener CF
6 x TCEM2.5X8 -
M2.5X8 Hex Cap Screw
TCEM2X6 -
M2X6 Hex Cap Screw
7 x M2x6 Hex Cap Screw
Note: Don't fully tighten yet.
See assembly alignment
Step page 23.
6 x M2.5x8 Hex Cap Screw
Note: Don't fully tighten yet.
page 19
Chapter 7: Main Frame Assembly