Oxy Heli OXY4 User manual

Instruction Manual
revision 1

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

740mm
200mm
685mm
166.5mm
178.50mm
105mm
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
-Tail Blade Clamping
-Weight
-Maximum motor size
-Maximum battery size
-Recommend battery
: 740mm (with 325mm blades).
: 325mm
: M3 / 6 mm root.
: 178.5 mm.
: 62-68 mm.
: M2 / 3.5 mm root.
: 800g (ready to fly excluding batteries)
: diameter 33mm.
: length 105mm, height 35mm, width 43mm, 260 weight 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
1.3mm 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

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 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

OXY 4 POWER SYSTEM AND HEAD SPEED SET-UP
In order to choose the best setup for your Oxy 4, and optimize performance, it is important to know some basic information:
1- Motor Kv – Min - Max - See your motor specification
2- Battery Pack – (3s or 6S)
3- Your target head speed
If you use a head speed calculator, use 150T for the main gear and one of the available pinions 14T – 15T – 16T – 17T -18T .
Head Speed Note: Although Oxy 4 can handle very high Head Speed, we suggest not to exceed 4500 RPM to maintain a good compromise btw performances and efficiency. Configuration examples Since the Oxy4 is a
high performance 3D RC
helicopter, we suggest using high quality power components including motor, battery and ESC. Remember the Oxy 2 is a 200 class heli – use light components to maximize flight time and performance. Here are some
suggestions:
-
Motor: Suggested 3SKV: 3500 to 4000 or 6SKV: 1500 to 1900, 2216 to 2620 caliber series (stator diameter – stator length).
-
Battery: 3S or 6S with capacity 3s to max 2250 (estimate) 6s to max 1800
(1800 max best suited for stretched Oxy 4) 45C discharge rate. Maximum size: length 110mm, height 34mm, width 43.5mm, weight 250g.
-
ESC: 50 to 60A – with BEC V or higher.
-
Cyclic servos: Standard Sub MICRO size servo speed: =>0.06 sec/60 at 6V.
-
Rudder servo: Standard MICRO size servo – speed =>0.06 sec/60 at 6V – a specific rudder servo is suggested for best tail authority.
-
FBL system: The Oxy 4 was designed around the U-Ikon / U-Brain and Neo V-Bar Systems. But many other smaller size FBL systems can be used, depending on your personal choice. Max inner Frame dimension 33mm.
-
Main blade: The Oxy 4 can fly with main blades from 320 to 360mm. Our testing was with Zeal 325mm and Zeal 360 Carbon main blade. The Oxy 4 main grips use M3 clamp screw and have a 6 mm root.
-
Tail blades: The Oxy 4 uses our own OEM tail blades, either 62 or 68mm (included with the kit). They use a M2 clamp screw and 3.5 root.
We offer 62 and 68mm tail blades to suit different head speeds. Use 68mm tail blades when your head speed is lower than 4500rpm and 68mm with higher head speeds.
Chapter 5: Pinion Selection & RPM
page 6

A
A
Chapter 6: Tail Assembly
page 7
Vertical Fin Assembly
(Box 3/Bag 1)
Important Note:
This part, for tuning reasons,
comes factory pre assembled,
it ready to us
OXY0353-OXY4-
Vertical Fin Block
OXY0354 -Vertical
Fin Bushing
MR684_ZZC -
Radial Bearing 4x9x4
Tail Case Assembly
(Box 3/Bag 1)
Important Note:
This part, for tuning reasons,
comes factory pre assembled,
it ready to us
MR684_ZZC -
Radial Bearing 4x9x4
OXY0358-OXY4 - Tail
Case Bearing Bushing
OXY0676-OXY4
CF Side Case
Tail Rotor Assembly
(Box 3/Bag 2)
MR63-X - 3X6X2
Radial Bearing
OXY0710 - OXY4
Tail Grip
Important Note:
This part, for tuning reasons,
comes factory pre assembled,
it ready to use
OXY0054 - 3X4X0.1 Shim
F3-6M-3x6x2.8 Thrust Bearing
OXY0723 - Tail Grip Spacer
Important Note:
This part comes pre assembled
WITHOUT thread lock. It MUST be
re-assembled with thread lock as shown.
OXY0344 -
OXY4-Tail Hub
O-Ring ID2 W1
OXY0054 -
3X4X0.1 Shim
OXY0050 - linkage
ball 4 X 3 M2
OXY0055 -
2X3.5X0.5 Washer
TCEM2X5 - M2X5
Hex Cap Screw

Chapter 6: Tail Assembly
Tail Shaft Assembly
( Box 3 / Bag 3 )
OXY0733 - 1.5x9.5 Alloy
Steel Dowel Pin
OXY0743 - 4x6x2.5 Bushing
OXY0348 - Tail Shaft
OXY0726 - 24T Tail Pulley
Tail Pitch Slider Assembly
( Box 3 / Bag 4 )
Important Note:
This part, for tuning reasons,
comes factory pre assembled,
it ready to use.
OXY0345 - Tail Pitch
Slider Bushing
OXY0714 - Tail Pitch
Slider Ring
MF106-ZZ - 6X10X3
Flange Bearing
TBEM2X5 - M2X5 Button Screw
OXY0062 - 2X3X2 Bushing
OXY0064 - Link Control
page 8
Important note:
This part comes pre assembled
WITHOUT thread lock. It MUST be
re-assembled with thread lock as shown.

MR63_ZZC - 3X6X2.5 Radial Bearing
OXY0727 - 3x4x2.3 Bushing
OXY0674 - Tensioner Adapter
OXY0725-Pulley Guide Belt
Tail Belt Tensioner Assembly
( Box 3 / Bag 5 )
Tail Belt Crank Support Assembly
( Box 3 / Bag 5 )
Tail Belt Crank Assembly
( Box 3 / Bag 5 )
Important Note:
This part, for tuning reasons,
comes factory pre assembled,
it ready to use
2xMF682ZZ-2X5X2.3
Flange Bearing
OXY0673-Bell Crank Support
Chapter 6: Tail Assembly
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
page 9
OXY0724-Tail Bell Crank
OXY0057-Tail Pin Screw

0.50
Chapter 6: Tail Assembly
OXY0357-STD Carbon Rod
OXY0666-OXY4 SST Threaded Rod M2X10
OXY0716-linkage Ball M2 thread
Note: to install this
pin screw rotate
counter clock wire
OXY0620-Guide
Push Rod
2 x OXY0539-
Pin Screw
Note Pin Screw Thread:
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
Note: Install the Pin Screw
and leavea gap as shown.
Step 2:
Step 1:
page 10
Important Note:
This part, for tuning reasons,
comes factory pre assembly,
it ready to use
Push the part inside the
boom sockets as shown
Step 3:
Step 4: 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 5:

Chapter 6: Tail Assembly
OXY0303 - Tail Boom Assembly
OXY0343 - Tail Case Insert
B516MXL Timing Belt
( Box3 / Bag 6 )
TCEM2X5 - M2X5
Hex Cap Screw
2 x TCEM2X6 - M2X6
Hex Cap Screw
Tail Case Assembly
Tail Bell Crank Suppport Assembly
page 11
Tail Shaft Assembly
Tensioner Assembly
4 x TCEM2X6 - M2X6
Hex Cap Screw
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.
Vertilcal Fin Assembly
before install any shim
read carefully fine
adjustment shims note.
TCEM2X22 - M2X22
Hex Cap Screw
OXY0648 - Tail Case Rod

Chapter 6: Tail Assembly
SCM3x3-
Set Screw M3x3
2 x TBEM2X6 - M2X6
Button Screw
Tail Bell Crank Assembly
2 x M2X6 Button Screw
Note: Line up the
holes, so the set
screw seats correctly
into tail shaft lock hole.
page 12
OXY0717 - PL
Tail Servo Support
(Box 3 / Bag 7 )
Note: don't install any screw

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.
A
B
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 13
Chapter 6: Tail Assembly

Chapter 6: Tail Assembly
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 14

page 15
Chapter 7: Main Frame Assembly
Install the Pins into the Pulley
Guides and press completely into
the Tail Boom Clamp Socket Lips.
OXY0660 - Hexagon Rod
2 x Pulley Guide Belt Assembly
OXY0683 - Boom Clamp
OXY0668-Bell Crank Bushing
OXY0725-Pulley Guide Belt
OXY0023-2X13.5 PIN
SMR682Z-ZZ -
2.5X6X2.6 Radial Bearing
OXY0352 - Upper Bearing Block
RM126-ZZ - 6x12x4
Radial Bearing
OXY0352 - Upper Bearing Block
RM126-ZZ - 6x12x4
Radial Bearing
Boom Clamp Assembly
( Box 3/ Bag 9 )
Upper Bearing Block Assembly
( Box 3/ Bag 10 )
Middle Bearing Block Assembly
( Box 3/ Bag 11 )
Important Note:
This part, for tuning reasons,
comes factory assembled,
it is ready to use.
Important Note:
This part, for tuning reasons,
comes factory assembled,
it is ready to use.

17.50
33
16
Chapter 7: Main Frame Assembly
Left
Righ
OXY0425 -
Break Away Canopy
OXY0082 - Canopy Mount
TBES2X6 - M2X6 Self
Tapping Screw
OXY0331- Lower Bearing Block
RM126-ZZ -
6x12x4 Radial Bearing
SCM3x3 -
Set Screw M3x3
Pinion (15T-3.5mm Motor Shaft included )
TCEM3X8 -
M3X8 Hex Cap Screw
OXY0336 - Motor Mount
page 16
Lower Bearing Block Assembly
( Box 3/ Bag 12 )
Break Away Canopy Assembly
( Box 3/ Bag 13 )
Motor Assembly
( Box 3/ Bag 14 )
Important Note:
This part, for tuning reasons,
comes factory assembled,
it is ready to use.
This hole is in the
nose of helicopter

Chapter 7: Main Frame Assembly
page 17
7 x M2x6 Hex Cap Screw
Note: Don't fully tighten yet.
Wait future neccessary
assembly step.
OXY0661 - Main Frame
Upper Bearing
Block Assembly
Middle Bearing
Block Assembly
3 x OXY0665 -
Hexagon 3mm
4 x all screws in this step
Note: Don't fully tighten yet.
Wait future neccessary
assembly step.
Lower Bearing
Block Assembly
FHSM2X4 -
M2x4 Flat Head Screw
OXY0711 -
Anti rotation Guide
4 x TCEM2X5 -
M2X5 Hex Cap Screw
7 x TCEM2X6 -
M2X6 Hex Cap Screw
Battery Tray
( Box 3/ Bag 15 )

Chapter 7: Main Frame Assembly
page 18
Motor Assembly
Boom Clamp Assembly
OXY0663 - Boom Clamp
Stiffener CF
6 x TCEM2.5X8 -
M2.5X8 Hex Cap Screw
OXY0332 -
M2.5 Washer
6 x M2.5x8 Hex Cap Screw
Note: Don't fully tighten yet.
TCEM2X6 -
M2X6 Hex Cap Screw
7 x M2x6 Hex Cap Screw
Note: Don't fully tighten yet.
See assembly alignment
Step page 23.

90°
90°
Chapter 7: Main Frame Assembly
4 x TCEM2x5 -
M2X6 Hex Cap Screw
page 19
6 x TCEM2.5x8 -
M2.5X8 Hex Cap Screw
All Screw in this step
Note: Don't fully tighten yet.
See assembly alignment
Step page 16.
Install main shaft with frame assembly
on a flat surface, push down on both frames
together and then fully tighten all M2 Hex Cap
Screws (x22) holding the bearing blocks.
Main Shaft
(
Box3 / Bag 16 )