Heli-Max HMXE0250 User Manual

READ THROUGH THIS INSTRUCTION MANUAL
FIRST. IT CONTAINS IMPORTANT INSTRUCTIONS
AND WARNINGS CONCERNING THE ASSEMBLY
AND USE OF THIS MODEL.

HMXZ7013 for HMXE0250 V1.1Entire Contents © Copyright 2007

Champaign, Illinois

[phone], Extension 6

E-mail: [e-mail]

INSTRUCTION MANUAL

TM

Heli-Max™guarantees this kit to be free from defects in both

materials and workmanship at the date of purchase. This
warranty does not cover any component parts damaged by use
or modification.In no case shall Heli-Max’s liability exceed the
original cost of the purchased kit. Fur ther, Heli-Max reserves
the right to change or modify this warranty without notice.

In that Heli-Max has no control over the final assembly or material
used for final assembly, no liability shall be assumed nor accepted
for any damage resulting from the use by the user of the final
user-assembled product. By the act of using the user-assembled
product, the user accepts all resulting liability.

If the buyer is not prepared to accept the liability associated
with the use of this product, the buyer is advised to return
this kit immediately in new and unused condition to the place
of purchase.

To make a warranty claim, send the defective part or item to
Hobby Services at this address.

Hobby Services

3002 N. Apollo Dr., Suite 1

Champaign, IL 61822

USA

Include a letter stating your name, return shipping address, as
much contact information as possible (daytime telephone
number, f ax number, e-mail address), a detailed description of the
problem and a photocopy of the purchase receipt.Upon receipt of
the package the problem will be evaluated as quickly as possible.

WARRANTY

Rotor Span: 52.75 in [1340mm]
Weight: 7.5 lb [3402g]
Length: 47 in [1194mm]
Height: 15.25 in [387mm]
Engine: .46-.51 cu in [7.5-8cc] 2-Stroke
Gear Ratio: 9.1:1 (Main)

5:1 (Tail)

TM

2

INTRODUCTION ..............................................................2

SAFETY PRECAUTIONS ................................................3

DECISIONS YOU MUST MAKE........................................4

ADDITIONAL ITEMS REQUIRED ....................................4

Required Hardware ..........................................................4

Field Equipment ................................................................4

Optional Supplies and Tools..............................................4

IMPORTANT BUILDING NOTES......................................5

KIT INSPECTION..............................................................5

KIT CONTENTS................................................................5

ASSEMBLY INSTRUCTIONS ..........................................6

Lower Frame and Tank......................................................6

Engine ..............................................................................6

Upper Frame and Servo Frame Installation ......................8

Main Rotor Head Assembly and Installation ....................9

Tail Boom and Gearbox Assembly..................................11

Tail Blades ......................................................................12

Horizontal and Ver tical Fins ............................................12

Tail Boom Suppor ts ........................................................13

Landing Gear ..................................................................14

Gyro Mount and Tail Rotor Servo Mount ........................14

Horizontal Fin Alignment ................................................15

EQUIPMENT INSTALLATION ........................................15

Servos and Power Switch................................................15

Battery, Receiver and Gyro ............................................16

Receiver Antenna............................................................17

Receiver Channel Assignment Table ..............................17

Connecting the Servos to the Receiver ..........................17

RADIO SETUP (FUTABA: 6EXH,7CH,9CH)..................18

Setup Quick Reference ..................................................18

Transmitter Preparation ..................................................18

Reset Model Memory......................................................18

Set Modulation Type........................................................19

Model Name....................................................................19

Exponential......................................................................19

Servo Reversing..............................................................20

End Point Adjustments....................................................21

Sub-Trim ..........................................................................21

Fail Safe ..........................................................................21

Gyro Function..................................................................21

Throttle Cut......................................................................22

Hover and Throttle Trims ................................................22

Hi-Lo Pitch Trims ............................................................22

Throttle Curve..................................................................22

Pitch Curve......................................................................23

Intermediate and Basic Aerobatic Curves ......................23

Advanced 3D and Aerobatic Curves ..............................23

SERVO SETUP AND LINKAGES ..................................24

Forward/Aft Cyclic Setup ................................................24

Left/Right Cyclic Setup....................................................24

Collective Pitch Setup......................................................25

Throttle Setup..................................................................26

Tail Rotor Ser vo ..............................................................26

Gyro Setup ......................................................................27

HEAD AND LINKAGES..................................................27

Install Main Rotor Head Linkages ..................................27

Main Blades ....................................................................27

Blade Balancing ..............................................................28

Pitch Curves....................................................................29

FINAL ASSEMBLY ........................................................30

Fuel Lines........................................................................30

Muffler Installation ..........................................................30

Body ................................................................................30

Decals..............................................................................31

PREPARE FOR FLIGHT ................................................32

Check the Control Directions ..........................................32

Range Check ..................................................................34

Balance the Model (C.G.)................................................34

PREFLIGHT ....................................................................34

Identify Your Model ..........................................................34

Charge the Batteries ......................................................34

AMA SAFETY CODE (Excerpts) ..................................34

FLYING............................................................................35

Training Gear ..................................................................36

Flying Conditions ............................................................36

Before Each Flight ..........................................................36

Starting the Model ..........................................................36

Adjust Blade Tracking......................................................36

Takeoff ............................................................................37

Hovering..........................................................................37

Landing............................................................................37

Basic Maneuvers ............................................................37

Aerobatics........................................................................37

PARTS LIST....................................................................38

Ordering Parts ................................................................38

Exploded Views ..............................................................39

Thank you for purchasing the Heli-Max™Kinetic™.50. We
are certain you will get many hours of enjoyment out of this
model.If you should ha v e an y questions or concerns please
feel free to contact us at:

[e-mail]

For the latest technical updates or manual corrections to the
Kinetic .50 visit the Heli-Max web site at:

www.helimax-rc.com

Open the “Helicopters” link, and then select the Kinetic .50. If
there is new technical information or changes to this model a
“tech notice”bo x will appear in the upper left corner of the page.

INTRODUCTION

TABLE OF CONTENTS

3

For any helicopter to perform to its full potential, it must be
equipped with all the right gear (servos, batteries, receiver , etc).
While other brands of equipment can be used, the equipment
we recommend has the advantage of being extensively tested
and proven effective. If you assemble this model according to
this manual and use the recommended equipment, you should
get top performance from your Kinetic .50.

We urge you to join the AMA (Academy of Model Aeronautics)
and a local R/C club.The AMA is the governing body of model
aviation and membership is required to fly at AMA clubs.
Though joining the AMA provides many benefits, one of the
primary reasons to join is liability protection. Coverage is not
limited to flying at contests or on the club field. It even applies
to flying at public demonstrations and air shows. Failure to
comply with the Safety Code (excerpts printed in the back of
the manual) may endanger insurance coverage. Additionally,
training programs and instructors are available at AMA club
sites to help you get started the right way .There are over 2,500
AMA chartered clubs across the countr y.Contact the AMA at
the address or toll-free phone number below.

Failure to follow these safety precautions may result in
severe injury to yourself and others.

• Keep your face and body as well as all spectators away
from the plane of rotation of the rotors.

• Keep these items away from the rotors: loose clothing
(includes ties, scarfs and shirt sleeves), long hair, and
loose objects (such as pencils, screwdrivers) which can f all
from shirt or jacket pockets.

• The spinning blades of a model helicopter can cause
serious injury. Main rotor blades are consumable items,
please inspect blades before flight.

• When choosing a flying site for your Kinetic .50, stay clear
of buildings, trees and power lines.

• AVOID flying in or near crowded areas. DO NOT fly close
to other people, children or pets.

• Maintain a safe pilot-to-helicopter distance while flying.

• Your Kinetic .50 should not be considered a toy, but rather
a sophisticated, working model that functions very much
like a full-size helicopter. Because of its performance
capabilities, the Kinetic .50, if not assembled and operated
correctly, could possibly cause serious injury to you or
spectators and damage to property.

• You must assemble the model according to the
instructions. Do not alter or modify the model, as doing
so may result in an unsafe or unflyable model. In a few
cases the instructions may differ slightly from the photos.
In those instances, the written instructions should be
considered as correct.

• You must take time to build properly, true and strong.

• You must use an R/C radio system that is in first-class
condition and a correctly sized engine and components
throughout the building process.

• You must correctly install all R/C and other components so
that the model operates correctly on the ground and in the air .

• You must check the operation of the model before every
flight to insure that all equipment is operating and that the
model has remained structurally sound. Be sure to check
linkages or other connectors often and replace them if they
show any signs of wear or fatigue.

• If you are not an experienced pilot or have not flown this
type of model before, we recommend that you get the
assistance of an experienced pilot in your R/C club for y our
first flights. If you’re not a member of a club, your local
hobby shop has information about clubs in your area
whose membership includes experienced pilots.

SAFETY PRECAUTIONS

Two of the most important things you can do to
preserve the radio controlled aircraft hobby are to
avoid flying near full-scale aircraft and avoid flying

near or over groups of people.

Academy of Model Aeronautics

5151 East Memorial Drive

Muncie, IN 47302

Tele: [phone]

Fax [phone]

Or via the Internet at:

http://www.modelaircraft.org

AMA

CAUTION: Be aware that the Kinetic .50 is

operated on the same frequency band as most R/C
models. If flying your helicopter within five miles of an
R/C site, there is a real possibility that you could be
operating your model on the same frequency (channel)
as another R/C pilot. If this happens, a crash will
result—with the person flying the more expensive
model suffering the greater loss (and having greater
potential for property damage or injury). The best thing
to do is to join an R/C club and fly at the site where
frequency control measures will be in effect.If you insist
on flying elsewhere, always be aware of your proximity

to R/C flying sites.

4

Remember: Take your time and follow the instructions
to build a safe and enjoyable model.

This is a partial list of items required to finish the Kinetic .50
that may require planning or decision making before starting
to build. Order numbers are provided in parentheses.

The Kinetic .50 requires five servos.The cyclics, throttle and
collective require a minimum of 42 oz/in for basic aerobatics.
A Hi-Speed and Hi-Torque tail servo such as the (FUTM0224)
Futaba®DS9254 is highly recommended to obtain the best
performance from the gyro.

A 6-channel transmitter is required to fly the Kinetic .50.
Modern computer radios make adjustments considerably
easier and are highly recommended. Plus the features on
the radios today make 3D maneuvers possible.

Transmitter/Receiver Recommendations:

• Budget: Futaba 6EXH FM w/4 S3151 Servo (FUTK58**)

• Mid-Range: Futaba 7CHF FM w/4 S3151 Servos (FUTJ73**)

• High-End: Futaba 9CHPS PCM Synthesized (FUTK9205)

Recommended Cyclic,Throttle and Collective Servos:

• Budget: Futaba S3001 (FUTM0029)

• Mid-Range: Futaba Digital S3151 (FUTM0310)

• High-End: Futaba Digital S9252 (FUTM0222)

Recommended Gyro and Tail Servo:

• Budget: Futaba GY240 (FUTM0809) and
S3151 Servo (FUTM0310)

• Mid-Range: Futaba GY401 w/S9254 Servo (FUTM0808)

• High-End: Futaba GY611 w/S9256 Servo (FUTM0825)

Recommended Receiver Batteries:

A 4-cell, 4.8 volt (2000mAh minimum) NIMH/NICAD battery
pack is recommended for the Kinetic .50

• Hydrimax™4.8volt 2000mah Flat Battery (HCAM6321)

• Hydrimax 4.8volt 3600mah Flat Battery (HCAM6333)

• Hydrimax 4.8volt 4200mah Flat Battery (HCAM6335)

REQUIRED HARDWARE AND ACCESSORIES

This is the list of hardware and accessories required to finish
the Kinetic .50. Order numbers are provided in parentheses.

❏ O.S.

®

50 SX-H Ringed Hyper (OSMG1951)

❏ Tor pedo Muffler .46-.50 (CEHG3033)
❏ Great Planes

®

Pro Thread Locker (GPMR6060)

❏ Great Planes 1" x 3' Double Sided Tape (GPMQ4442)
❏ Great Planes 3' Silicone Fuel Tubing (GPMR4131)
❏ Great Planes Fuel Filter (GPMQ4150)
❏ O.S.Remote Glow Plug Adapter (OSMG2401)
❏ Heli-Max .30 – .50 Size Blade Holder (GPMQ4150)

FIELD EQUIPMENT

❏ Heli-Max One-Way Start Shaft (HMXP2050)
❏ Hobbico

®

Glow Plug Wrench (HCAP2550)

❏ Hobbico Ultra-Tote

™

Field Box Complete Combo

(HCAP5105) (Includes the following items):

• Filling Station Can Fittings Set (GPMP4155)

• 12V Charger Torqmaster™Battery (HCAP0200)

• Deluxe Power Panel II (HCAP0302)

• Torqmaster 12V 7A Batter y (HCAP0800)

• 5' Recoil Fuel Tubing (HCAP2200)

• Panel-Ready Locking Glow Plug Clip (HCAP2502)

• Panel-Ready Top Fueler™6/12 V olt (HCAP3107)

• Torqmaster 90 12V Star ter (HCAP3200)

• Ultra-Tote Field Box (HCAP5020)

OPTIONAL SUPPLIES AND TOOLS

❏ O.S.Crankshaft Clamp .32-.46 (OSMR1004)
❏ DuraTrax

®

Phillips Screwdriver (DTXR0181)

❏ DuraTrax Slotted Screwdriver (DTXR0177)
❏ Hobbico Needle Nose Pliers (HCAR0625)
❏ Hobbico Curved Scissors (HCAR0667)
❏ Heli-Max Ball Link Pliers (HMXR4858)
❏ Heli-Max Pitch Gauge (HMXR4850)
❏ Heli-Max Blade Balancer (HMXR4855)
❏ DuraTrax 5.5mm Nut Driver (DTXR0212)

ADDITIONAL ITEMS REQUIRED

DECISIONS YOU MUST MAKE

We, as the manufacturer, provide you with a
top quality, thoroughly tested ARF and instructions,
but ultimately the quality and flyability of your finished
model depends on how you build it; therefore, we
cannot in any way guar antee the performance of your
completed model, and no representations are
expressed or implied as to the performance or safety

of your completed model.

5

• There are two types of threaded fasteners used in this kit:
Self-T apping Screwsare designated by a diameter and
a length and are intended to thread into plastic.

This is a 3mm x 10mm Self-Tapping

Machine screws are designated by a diameter and
threads per mm/inch. This type of screw is referred to as
Socket Head Cap Screw (SHCS) through out this man ual.

This is a 3mm x 10mm SHCS

• Thread Locker: Model engines generate a lot of vibration

and cause screws to work loose.Thread Locker (GPMR6060)
should be used on all machine screws when they are
threaded into a pre-tapped hole in metal. Generally blue
thread locker is removable and should be used in all cases.
Please keep in mind only a small amount of thread locker is
needed to retain the bolt. Please check preassembled
components for thread locking compound.

• Ball Links: If you look closely at the

plastic ball links used on this helicopter
you will notice the holes on each side of
the link are different sizes.The side with
the smaller hole also has writing on it as shown above.
When you snap the link on, make sure the writing is to
the outside. If you accidentally snap the small side on
first, the ball link may crack. If the ball link does not pivot
freely once snapped on, you can use a small pair of pliers
to lightly squeeze the link and help loosen it up.

• When you see the term

test fit

in the instructions, it means
that you should first position the part on the assembly to
verify it fits properly. Once you are sure, then proceed with
the instructions or assembly.

• Photos and sketches are placed before the step they
refer to .Frequently you can study photos in following steps
to get another view of the same parts.

Before starting to build, take an inventory of the model to
make sure it is complete, and inspect the parts to make sure
they are of acceptable quality. If any parts are missing or are
not of acceptable quality, or if you need assistance with
assembly, contact Product Support.When reporting defective
or missing parts, use the part names exactly as they are
written in the Kit Contents list.

Heli-Max Product Support:

3002 N. Apollo Drive, Suite 1,

Champaign, IL 61822

Telephone: [phone], ext.6,

Fax:[phone]

E-mail: [e-mail]

Bag 1: Head Parts and Paddles
Bag 2: Main Mechanics
Bag 3: Clutch System and Fan
Bag 4: Links, Gyro and Tail Servo Mounts
Bag 5: Fin Set
Bag 6: Landing Gear Set
Bag 7: Main Blades
Bag 8:Tail Boom
Bag 9: Servo Tray Set
Bag 10: Lower Frames, Fuel Tank, Fan Shroud
Bag 11: Canopy

KIT CONTENTS

KIT INSPECTIONIMPORTANT BUILDING NOTES

H

e
l

iM

a

x

6

LOWER FRAME AND TANK

Bag 10 Contents: Main Frame Assembly (Engine Mount

and Fuel Tank Installed), Fuel Stopper, Brass Tubing,
Silicone Fuel Line, and Stopper Screw, Lower Fan Shroud.

❏ 1. Slide the short brass tubing through the front cap. Slide

the rubber fuel tank stopper over the brass tubing from the
back side.Install the rear cap. Insert the long pre-bent piece of
brass tubing through the rear cap and through the rubber
stopper.Leave 1/2" [12.7mm] of brass tubing protruding from
the front of the cap.Install the 4mm self-tapping screw through
the front cap and into the rear cap (Start the screw into the
cap.Do not tighten until it has been installed into the fuel tank).

❏ 2. Cut the clunk line to a length of 60mm and slide it onto

the short brass tubing.Slide the fuel tubing ov er the clunk.Cut
a piece of the larger silicone tubing to 30mm with an angled
cut as shown above. Install on the vent line. Hint: Use a
marker to identify the pickup line later.

❏ 3. Rotate the vent line against the pickup line to make it

easier to install. Slide the fuel line assembly into the fuel
tank and align the vent line with the top of the tank (if you
find it difficult to see inside the tank, hold it up to a bright
light).Tighten the 4mm fuel tank stopper screw until you feel
it begin to compress. Do not overtighten this as you may
strip the rear cap.

ENGINE

Bag 3 Contents: Clutch Bell, Fan, Clutch, Engine Mount
From Bag 10: Screws (3x16mm Socket Head Cap Screw)

AS VIEWED FROM THE TOP

REAR CAP

FRONT CAP

VENT

4mm SCREW

FUEL PICKUP LINE

RUBBER STOPPER

ASSEMBLY INSTRUCTIONS

7

Note: You will need to lock the crankshaft while tightening

the clutch and nut.We recommend using a O.S.Crankshaft
Clamp .32-.46 (OSMR1004) as shown above.

❏ 1.Remove the n ut from the end of the engine’s crankshaft

but leave the large flat washer resting against the front ball
bearing. The large washer (10x16mm) included in the kit is
only used if your engine did not include one.

❏ 2. Slide the clutch bell onto the stepped end of the clutch

and test fit the assembly on the engine. Once you verify
everything threads on properly, remove the clutch and bell.

❏ 3. Apply thread lock to the crankshaft of the engine and

thread the clutch onto the engine. Use a thick piece of
cardboard to protect the crankshaft and tighten the clutch
using a screwdriver as shown in the picture above.

❏ 4. Install the fan on the engine. Make sure the key on the

bottom of the fan lines up with the slots in the clutch. Place
the 6.5x13mm washer on the crankshaft, apply some thread
lock to the crankshaft threads and install the original
crankshaft nut.Using a crankshaft clamp and a 7/16" [11mm]
wrench, tighten the nut down against the fan. Re-install the
engine’s backplate.

❏ 5.Using a 2.5mm hex driver remove the two engine mount

bolts from the right side of the frame. Remove the right side
frame and fuel tank for now.

❏ 6. Install the engine onto the mount using thread locker

and the four 3x16mm screws provided.

❏ 7.Install the right side frame using the 3x12mm screws and

large washers (use thread lock). Before tightening the bolts
place the frames on a flat surface to ensure they are parallel.
Tighten the bolts. Check the left side engine mount bolts
(factory-assembled) for thread locker and apply if necessary.

UPPER FRAME AND SERVO FRAME INSTALLATION

Bag 2 Contents: Assembled Main Mechanics

Bag 9 Contents: Servo Tray Set, 3x12mm Cap Screw (4),

3x8mm Self-Tapping Screw (2), 3x8mm Mashine Screw (2),
3x8x1mm Flat Washer (4), 3x12mm Self-Tapping Screw

❏ 1. Slide the lower fan shroud over the engine as shown in

the picture above and install the 3mm self-tapping screw as
shown. Repeat on the opposite side.

❏ 2. Slide the rear portion of the upper frame into the lower

frame. Align the upper and lower fan shroud and slide the
upper frame forward while pressing downward. The clutch
bell and pinion must clear the main gear before the upper
frame will slide down into its proper location.

8

9

❏ 3. Apply thread locker to one 3x12mm socket head cap

screw. Install the screw and washer as shown above.
Repeat on the opposite side of the frame.

❏ 4. Apply thread locker to one 3x14mm socket head cap

screw .Install the screw and washer as shown above.Repeat
on the opposite side of the frame.

❏ 5. Slide the servo frame in-between the lower frames and

onto the upper frames. Install a 3x12mm self-tapping screw
into the top of the frame as shown above. Repeat for the
opposite side.

❏ 6. Install the silver 3x6mm silver Phillips screw into the

lower part of the servo frame as shown above. Remove the
two bellcrank to swash linkages and verify they are 51mm
long. Go ahead and re-install the linkages now.

MAIN ROTOR HEAD ASSEMBLY AND INSTALLATION

Bag 1 Contents: Flybar Control Arm [4x6x2.5mm Plastic

Spacer (2), Washout-Flybar Pushrod (2), Flybar Control
Arm (2), 5x4mm Set Screw], Flybar Paddles [Flybar Weights
(2), 3x3mm Set Screws (2), Flybar Paddles .50 Sized (2)],
Main Head Assembly, 4x30mm Cap Screw (2), 4mm
Locknut (2), 3x20mm Cap Screw, 3mm Locknut

❏ 1. Slide the 4mm flybar (found in tail boom bag 8) through

the flybar carrier bearings and slide a plastic bushing on from
each side.Next slide the control arms onto the flybar as shown
in the picture above.(The set screws will face upwards.)

51mm

(Sketch not to scale)

❏ 2.Remo v e the set screws from the flybar arms and align the

hole with the flat spot on the flybar. Apply a small amount of
thread locker to each of the set screws and re-install.Only lightly
tighten them at this time as the flybar needs to be centered.

❏ 3. Using a ruler, center the flybar as shown above. The

measurement should be approximately 181mm for each side .

❏ 4. Once the flybar is centered, tighten the flybar arm

set screws.

❏ 5. Install the two 3x3mm set screws into the flybar

weights. Slide the weights onto the flybar with the beveled
end facing inward. Thread the paddles onto the flybar at
least 1" [25.4mm]. Measure from the outside of the flybar
arm to the beginning of the paddle. Make sure both paddles
are the same distance out and facing forward as shown.

❏ 6. Align the paddle with the flybar control arms as shown

above. The paddles and arms must be parallel. Slide the
flybar weights all the way out against the paddles and tighten
the set screws.

❏ 7. Slide the head onto the main shaft and align the bolt hole

in the head block with the hole in the main shaft.To help align
the two holes, insert a 2.0mm hex driver into the hole.Insert the
3x16mm SHCS through the head block and main shaft.Place a
3mm nylon lock nut on the opposite side and tighten the bolt.

10

11

❏ 8.Chec k the two linkages and v erify they are 42mm.Install

the two linkages onto the flybar control arm and the washout
arm as shown above.Temporarily install the 4mm main blade
bolts into the blade grips.Do not tighten at this time.

TAIL BOOM AND GEARBOX ASSEMBLY

Bag 8 Contents: Tail Boom, Tail Boom Supports, Tail Rotor

Pushrod, Antenna Tube

Bag 8-1 Contents: Torque Tube

Bag 8-2 Contents: 3x16mm SHCS, 3x10mm SHCS, 3mm

Nylon Lock Nuts

❏ 1.Insert the torque tube into the tail boom. If the O-rings

do not slide easily, apply a small amount of dishwashing
soap to the O-rings.

❏ 2. Remove the left side of the tail rotor gearbox and insert

the right side into the boom as shown above. Please notice
there are two holes on one end of the tail boom.This is the end
where the tail gearbox attaches.Make sure the alignment tab
molded in the tail rotor gearbox halves line up with the hole in
the tail boom. Install the left side of the tail rotor gearbox.

42mm

(Sketch not to scale)

❏ 3. Install three 3mm nylon lock nuts on the back side of

the gearbox where you just inserted the 3mm screws.
Tighten the bolts.

TAIL BLADES

Bag 5-1 Contents:

Tail Rotor Blades, 3x16mm Cap Screw

(2), M3 Locknut (2), Fiber Filled Tail Blades 85mm (2)

❏ Install the plastic tail blades as shown above using a

3x16mm SHCS and 3mm Nylon lock nuts.Tighten until the
blades will support their own weight. Both tail blades need
to be tightened equally.

HORIZONTAL AND VERTICAL FINS

Bag 5 Contents: Horizontal Tail Fin, Vertical Fin, Horizontal

Fin Mount, Horizontal Mounting Plate, 3x30mm Cap Screw,
3x11mm Self-Tapping Screw, 3mm Locknut

❏ 1. Using two 3x30mm screws and 3mm nylon lock nuts,

attach the vertical fin to the tail rotor gearbox as shown abov e.

12

13

❏ 2. Install the horizontal fin clamp.Using two 3x16mm self-

tapping screws, attach the horizontal fin to the clamp .Do not
completely tighten bolts at this time as you will need to adjust
the position in a later step.

❏ 3.Slide the tail boom into the main frame as shown.It will be

necessary to turn the main rotor head while pushing forward on
the boom to help align the tail drive system.The frame screws
used to clamp the boom are installed in a later step.

TAIL BOOM SUPPORTS

Bag 8-3 Contents: 3x10mm SHCS, 3mm Self-Tapping

Screws, Plastic Spacers, 3mm Nylon Lock Nuts

❏ 1.Install the boom supports using two 3x10mm SHCS and

two 3mm nylon lock nuts .You will need a pair of small needle
nose pliers for this step.

❏ 2. Install the two 3x8mm self-tapping screws.Use a drop

of CA on the screw to prevent it from coming loose. Please
notice that the angle molded on the bottom of the fin clamp
angles down and toward the front of the helicopter.

❏ 3. Slide the tail rotor pushrod through the guides and

horizontal fin clamp.The Z-bend lines up vertically as shown in
the picture.Snap the plastic ball link onto the tail rotor bellcrank.

LANDING GEAR

Bag 6 Contents: 3x20mm SHCS (4), Plastic Spacers,

3mm Nylon Lock Nut (4), 3x4mm Set Screws (4)

❏ 1. Inser t a 3x20mm SHCS through the underside of the

landing gear strut. Slide a plastic spacer on the top and
insert the screw into the front frame hole. From the top,
install a 3mm nylon lock nut and tighten the bolt.Repeat for
the other side and the rear strut. If the front skid does not
clear the cylinder head on your engine, then simply mount
the front skid in the aft hole.

❏ 2. Slide the landing gear skids through the struts from

the front. Leave approximately 1" [25mm] protruding from
the back.

❏ 3. Install the four 3x4mm set screws into the inside of the

struts.These are used to lock the struts to the skids. Please
be careful not to overtighten.

GYRO MOUNT AND TAIL ROTOR SERVO MOUNT

Bag 4 Contents: Tail Rotor Servo Mount, Linkage Rods,

Tail Rotor Pushrod Coupler, Servo Retainers

❏ 1. Install the gyro and servo mount using four 3x30mm

SHCS and four 3mm nylon lock nuts as shown above.Push
the boom all the way f orward into the frame while turning the
rotor head before tightening the bolts down completely.

Please make sure the boom is far enough forward to
engage the tail drive.

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