Heli-Max HMXE0210 User Manual

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

HMXZ7012 for HMXE0210 V1.0Entire Contents © Copyright 2006

Champaign, Illinois

[phone]

E-mail: [e-mail]

INSTRUCTION MANUAL

Rotor Diameter: 27.5 in [700mm]
Weight: 19–22 oz [580–760g]
Length: 25.4 in [645mm]
Height: 9 in [225mm]
Motor: ElectriFly Ammo 28-45-2700kV (GPMG5215)

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

material 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. Further, 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.

Include a letter stating your name, return shipping address, as
much contact information as possible (daytime telephone number,
fax 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

Hobby Services

3002 N. Apollo Dr. Suite 1

Champaign IL 61822

USA

™

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

DECISIONS YOU MUST MAKE. . . . . . . . . . . . . . . . . . . 2

ASSEMBLE THE T AIL. . . . . . . . . . . . . . . . . . . . . . . . . . 3

INST ALL THE PUSHRODS. . . . . . . . . . . . . . . . . . . . . . 4

INST ALL THE SERV OS. . . . . . . . . . . . . . . . . . . . . . . . . 5

INSTALL LINKAGES. . . . . . . . . . . . . . . . . . . . . . . . . . . 6

INSTALL GYRO, ESC & RECEIVER. . . . . . . . . . . . . . . 6

FINAL ASSEMBLY & SETUP . . . . . . . . . . . . . . . . . . . . 7

CHECK THE CONTROL DIRECTIONS . . . . . . . . . . . . . 9

BLADE BALANCING . . . . . . . . . . . . . . . . . . . . . . . . . . 9

ADJUST COLLECTIVE PITCH . . . . . . . . . . . . . . . . . . . 9

SET CONTROL THROWS. . . . . . . . . . . . . . . . . . . . . . 10

ADJUST BLADE TRACKING . . . . . . . . . . . . . . . . . . . 10

RANGE CHECK . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

SAFETY PRECAUTIONS . . . . . . . . . . . . . . . . . . . . . . 10

MX400 PARTS LIST . . . . . . . . . . . . . . . . . . . . . . . . . . 11

PARTS DRAWINGS . . . . . . . . . . . . . . . . . . . . . . . . . . 12

PITCH GAUGE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

The Heli-Max MX450 is a fully aerobatic-capable helicopter,
offering the performance and flying manners of a 60-sized
machine in a smaller, more con venient pac kage .The MX450 is
fully loaded with precision machined aluminum parts for
smooth control without flexing along with a carbon fiber tail
boom and fin set to keep the MX450 light and more agile.The
recommended power system will give you explosive power off
the ground and more than enough power to do tick tocks,
tornado's, chaos's, and much more.

T ak e care to build straight and true.Misaligned parts will hurt the
helicopter's ability to perform the extreme aerobatics it is
designed for.

For the latest technical updates or manual corrections to
the MX450 visit the Heli-Max web site at

www.bestrc.com/helimax.Open the “Helicopters” link, and

then select the MX450 ARF. If there is new technical
information or changes to this model a “tech notice” box will
appear in the upper left corner of the page.

In the hands of a capable pilot, the MX450 is an impressive
3D performer. But for this helicopter to perform to its full
potential, it must be properly equipped with all the right gear
(servos, batteries, receiver, speed control). There may be
more than one type and brand of radio equipment that can
be used. But based on extensive testing, following is the
equipment we recommend so you can get the most
performance out of your MX450 and assemble it as shown
in this instruction manual.

Transmitter

At a minimum, this helicopter requires the use of a six-channel
helicopter transmitter capable of mixing between the throttle
and collective pitch channels. However, to unleash the full
aerobatic potential of the MX450, you will need a computer
radio capable of at least two sets of throttle and pitch curves.
The Futaba®6EXH radio (FUTK60** or FUTK61**) is an
excellent entry-level radio for use with this helicopter.For more
programming capability, any of Futaba’s higher channel-count
computer helicopter radios will work very well.

Servos

You will need four servos for the MX450.The servos should
weight less than 10 grams apiece, and should have a
minimum torque output of 14 oz-in. A good speed rating is
also important for helicopters, and we recommend that you
choose servos with a speed of 0.12sec/60deg or less. We
recommend the Futaba S3103 (FUTM0037) or S3107
(FUTM0025) for use with this helicopter. Note: The Futaba
S3108 servo will not mount to this helicopter without
modification, and is therefore not recommended.

Receiver

You will need a 6-channel receiver for this helicopter. A
small PCM receiver is strongly recommended for the noise
rejection and failsafe capabilities that PCM offers. We
recommend the Futaba R146iP receiver (FUTL0601) You
will also need a single conversion crystal to use with this
receiver. While most Futaba receivers are sold on high and
low bands, the R146iP is not banded and can use either
high or low band crystals.

Low band (channels 11 – 35) Crystal FUTL62**
High band (channels 36 – 60) Crystal FUTL63**

**Replace the “**” in the order number for the crystals with
the preferred channel number. For example, if you want to
fly on channel 33, order crystal number FUTL6233.

DECISIONS YOU MUST MAKE

CAUTION: Be aware that the MX450 is

operated on the same frequency band as larger R/C
models. If flying your heli 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.

INTRODUCTION

2

Gyro Recommendation

We recommend the use of a heading-hold gyro with this
helicopter. The Futaba GY240 gyro (FUTM0809) is an
excellent choice.

Battery

The MX450 requires a 1200-2000 mAh 3-cell Lithium-Polymer
(LiPo) battery capable of delivering 15A of current continuously.
We recommend the ElectriFly™11.1V 2100 mAh pack
(GPMP0841).This battery will deliver approximately 7 min utes
of flight time with the recommended motor and speed control.

Motor

You will need a brushless motor capable of handling 15A of
continuous current, and up to 22A in bursts. The motor
should also have a kV rating of 2500-3000 RPM/V for use
with the included pinion. We recommend the ElectriFly
Ammo 28-45-2700kV (GPMG5215).

Speed Control

A 35-Amp or better brushless electronic speed control
(ESC) is required for this helicopter. We recommend the
Heli-Max 40A Brushless ESC (HMXM3004).

Charger

A charger capable of charging 3-cell (11.1V) LiPo batteries
such as the ElectriFly PolyCharge 1-3-cell LiPo charger
(GPMM3010) must be used. If using another charger, it
must be a LiPo charger or hav e a LiPo charge mode.Never
charge LiPo batteries with chargers not intended for LiPo
batteries or chargers on NiMH or NiCd settings.
Overcharging or explosion may result. In addition to the
PolyCharge, the ElectriFly Triton™(GPMM3150) and Accu­Cycle Elite™(HCAP0280) are also suitable chargers.

Battery Charging Leads

Many chargers (including the Triton and Accu-Cycle Elite
listed above) do not include charging leads, but rather have
banana jacks to plug the leads into. If this is the case with
your charger, you will need to purchase a charge lead to
match your battery. For the recommended battery pack, the
correct lead is GPMM3105.

❏ 1.Install the aluminum horizontal stabiliz er and the horizontal

stabilizer bracket onto the tail boom with two 2 x 8mm metal
screws. Do not fully tighten the screws at this time. Be sure to
add a drop of threadlocker to each screw.

❏ 2. Secure two aluminum tail strut ends and the rear frame

spacer to the frames with two 2x10mm machine screws as
shown.Use a drop of threadlocker to secure each screw.

❏ 3. Secure two tail strut ends to the aluminum ho r izontal

stabilizer bracket with 2x8mm metal screws. Use a drop of
threadlocker to secure each screw.

ASSEMBLE THE T AIL

IMPORTANT!

INSPECT Y OUR HELICOPTER

Check all screws on the helicopter for tightness. If any
screws are loose, tighten them before flying. If any
machine screw that threads into a metal part is loose, be
sure to secure it with a drop of threadlocking compound.
This check should include the tail blade grip screws,
which will require removal of the tail rotor blades.

3

4

❏ 4. Insert the carbon fiber tail struts into the aluminum strut

ends. Secure each end with a drop of thin CA.

❏ 5. Finalize the position of the horizontal stabilizer brack et,

and tighten the horizontal stabilizer screws to hold the
assembly firmly in place. Do not over tighten. Use a drop of
threadlocker to secure each screw.

❏ 1. Slide the rudder pushrod back through both suppor ts

on the tail boom.

❏ 2. Screw a ball link onto the threaded end of the

rudder pushrod.

❏ 3. Connect the ball link to the ball on the tail rotor pitch

control horn. Check to see that the ball link runs freely on the
ball, and loosen it if necessary using the following Heli-Max Tip .

HELI-MAX TIP

How to adjust the fit of ball links.

If a ball link does not twist freely on its ball, squeeze it
firmly with a pair of needlenose pliers

while it is

installed on the ball.

INST ALL THE PUSHRODS

Use this swash plate diagram in your radio for proper setup.

❏ 1. Locate the 4 aluminum balls and the 4 2mm x 6mm

machine screws. Install the 4 ball links onto all 4 control
horns (AIL, ELE, PIT, RUD).

❏ 2. Using two plastic servo screw nuts, install the Aileron

servo as shown. With the aileron servo centered, the servo
arm should be completely horizontal with the ball end to the
rear as shown.

❏ 3. Using two plastic ser vo screw nuts, install the pitch

servo as shown. With the pitch servo centered, the servo
arm should be completely horizontal with the ball end to the
rear as shown.

❏ 4. Using two plastic servo screw nuts, install the elevator

servo as shown.With the elevator servo centered, the servo
arm should be completely horizontal with the ball end to the
rear.The output shaft of the ser vo should point towards the
front of the heli.

❏ 5. Using two plastic servo screw nuts, install the rudder

servo as shown. With the rudder servo centered, the servo
arm should be completely horizontal with the ball end up as
shown. The output shaft of the servo should point towards
the rear of the heli.

INST ALL THE SERV OS

5

❏ 6. Locate the 3 control rods and the 6 ball link ends.

1) Pitch (54mm)

2) Elevator (48mm)

3) Aileron (41mm)

All measurements are overall length with the ball links
threaded on to the metal rods.

❏ 7. Install the Aileron control linkage as shown.

❏ 8. Install the Pitch control linkage as shown.

❏ 9. Install the elev ator control linkage as sho wn.Be sure that

the swash plate is le v el with all the control arms and the servos
are horizontal. If they are not, remove and adjust accordingly.

❏ 10. Install the ball link to the rudder control linkage and

snap it on the ball attached to the control arm.

❏ 11. Install the Futaba 401 gyro on the top of the frames

as shown with double sided foam tape. Be sure the surface
is clean to get a good bond.An optional mount (HMXE7921)
is available for a more secure mounting, if desired.

INSTALL

GYRO, ESC & RECEIVER

INSTALL LINKAGES

6