Modelix Ultimate MX8 Racing User manual

INSTRUCTION MANUAL

Thank you for purchasing the UR
Brushless Electronic Speed Control-
ler (ESC) and MX8 motor series.
This MX8 series ESC has been spe -
cically designed and optimized
by UR engineers and their Racing
Team, to endorse awless opera-
tion with the new MX8 series sen-
sor or sensor-less brushless motors.
Please read below warning, war-
ranty and operational instructions
carefully before installing and us-
ing the product in the intended ve-
hicle.
WARNINGS
• This is a professional compe-
tition racing product, which if
used incorrectly, can lead to
damage or injuries. Do not let
children use this product with-
out the supervision of an expe-
rienced adult.
• Never leave the ESC and relat-
ed products in its vicinity unsu-
pervised while it is powered on.
• The ESC might get and remain
hot during and after use, be
careful when handling it.
• Always disconnect immediate
the battery after every use; nev-
er store the vehicle with the bat-
tery connected.
• Do not use near ammable or
light ignitable materials.
• If the ESC overheats, emits
smokes or burns, or the vehicle
suddenly slows down, immedi-
ately discontinue use, disconnect
the battery and seek assistance.
WARRANTY
Modelix-Ultimate guarantees this
product to be free from manufac-
turing and workmanship defects.
The warranty does not cover incor-
rect installation, components worn
by use, or any other problem re-
sulting from incorrect use or han-
dling of the product. No liability
will be accepted for any damage
resulting from the use of this prod-
uct. By the act of connecting and
operating this product, the user ac-
cepts all resulting liability. Is con-
sidered as incorrect use:
• Failure to follow instructions.
• Improper use of the product
(abusive use, out of spec, etc.)
• Failure to adapt settings for
proper function (improper con-
nections, wrong gearing, instal-
lation, setup, etc.).
• Overload, overheating (de-sol-
dering, melting, etc.).
• Running in inadequate condi-
tions (damage or rust from rain,
humidity, excessive dust etc.).
• Improper maintenance (pres-
ence of dirt, dust, water etc.).
• Disassembly, modication by the
user (modifying original connec-
tors, wires, components, etc.).
• Mechanical damage due to ex-
ternal causes.
MX8 Features
• Racing experience enhanced
throttle response for excellent
acceleration, linearity and driv-
ability
• Multiple protection features:
Low voltage cut-off, over-heat
and throttle signal-loss protec-
tion
• Auto sensor-mode detection with
sensor less mode protection
• Compatible with sensor or sen-
sor-less brushless Racing motors
from 2 Pole to 6 Pole
• Using advanced PC interface to
set up or update the rmware
• Quick setting change option by
LED program box
• Installation
The MX8 series product are de-
veloped with simplicity and user
friendliness in mind, however it is
still required to follow the below
connection sequence carefully to
avoid unexpected issues.
Tip: Before any ESC installation
is commenced and nalized its
obliged to remove the pinion of
the motor, and make sure the pow-
er switch is in the “off” position.
Step 1
The ESC and motor come pre-in-
stalled with a plug and wire sys-
tem, however the sequence of the
wire connection to from ESC to mo-
tor is important to follow. This se-
quence is ABC sequence, which
are clearly indicated on both ESC
and motor:
A: Connect ESC A wire
to A position on motor
B: Connect ESC B wire
to B position on motor
C: Connect ESC C wire
to C position on motor
Step 2
After this ABC installation and ver-
ication, the sensor wire can be
connected to the ESC and motor;
this only in case the system will be
operated in sensor mode.
Step 3
Please connect the black BEC re-
ceiver wire to the receiver; note
this is normally position 2 (throt-
tle channel) on the receiver; be
aware to insert the plug the cor-
rect position (in case of a reverse
connection, the system will not be
damaged, however there will be
no signal or power).

Step 4
Please insert the power wires
which lead to the battery, with
+ (positive RED wire) inserted in
the + position of the ESC, and the
– (negative BLACK wire) in the –
position. PLEASE VERIFY THIS
VERY CAREFULLY; if wrong con-
nected it will lead to immediate
and unrepairable defects!
Step 5
First a system calibration is al-
ways required for a correct oper-
ation and maximum performance,
please follow the below sequence
rstly:
Throttle Range Calibration
• Turn on the transmitter/radio,
make sure the throttle function
is set on REV, as well have the
EPA/ATV values of the throttle
channel set to 100%.
• If the above is veried and cor-
rect, motor pinion is removed
and ESC power switch in OFF
position, please connect the ESC
to a charged battery (either 2S,
3S or 4s).
• Press and hold the “Set” button
on the switch, and switch ON
the ESC. Only release the ‘Set”
button when the Blue LED turn
solid.
• Pull the throttle trigger to full
throttle position, Red LED light
will ash while motor beeps
once.
• Push the throttle trigger to full
brake position, Blue LED light
will ash while motor beeps
twice.
• Return to neutral position, both
Red LED and Blue LED will ash
while motor beeps three times.
• Turn OFF the ESC power switch
to save the settings.
• Turn the ESC back on and you
are ready to Race
The MX8 system has internal fault
system warnings as in below men-
tioned table to easy identify any
issues that may appear during in-
stallation or use. Please note these
as a trouble shoot incase perfor-
mance is not as expected.
Fault LED color LED Status
Battery Low Voltage Red Blinking
ESC Overheat Blue Blinking
Sensor Mode Red and Blue ON
Sensor-less Mode Blue ON
If all functions correctly and there
are no fault warnings, please
switch of the ESC and install the
pinion. Then switch on the ESC and
check if the rotation of the wheels
correspondent with throttle posi-
tion. If the motor run reverse/back-
wards, this can be solved as fol-
low:
In sensor less mode use, exchange
wire A to B and B to A, or B to
C and C to B. In case of sensor
mode, its obligatory to use the pro-
gram box and change option 8 in
the programmable items table be-
low to reverse. Noted: program-
mable values “shade colored” are
factory default settings
1. Cut-o Voltage/cell
When using LiPo batteries, to
avoid any damage to the battery it
is strongly suggested not to use the
“off” mode in the value settings.
This “off” mode setting is only re-
quired using NiMh batteries.
2. Running Mode
Forward/Brake/Reverse:
(DEFAULT) To activate the reverse
function, it is required to hold the
ESC throttle is in a 2 seconds neu-
tral position.
Forward / Brake: If this option
is activated the reverse function is
disable.
3. Motor Timing
This option affects the power band
and/or efciency (run time) of the
system.
Very Low: Provides maximum
efciency with less power. Good
for running around on parking
lots, long straights, high load sur-
faces (mud) and racing with high
KV rated motors (2100KV and up)
Low: Provides power for run-
ning through soft surfaces, and
increase runtime compared to de-
fault setting
Normal (Default): Good mix
of power and efciency using any
motor
High: More power, run time will
decrease and motor temperatures
can increase, so please monitor
this more closely. Maximum 90
degree motor temperature is ad-
vised.
Very high: Maximum power, but
may cause overheat quickly if high
KV motors are used.
Note : Any motor has the poten-
tial to over-heat in any setting, de-
pending on track and ambient con-
ditions. Frequently check the motor
temperatures and keep operating
temps below 90 degree C. If this
is too difcult to maintain in any
setting, please use a cooling fan
to cool the motor and avoid dam-
age or malfunction.

4. Punch
Use this setting to limit the initial
power that is sent to the motor
when starting from a complete
stop. It is suggested to use the be-
low 5 option to get the best feel-
ing for accelerations, with Smooth
setting proving the smallest accel-
eration the ESC can handle, and
Very High the fastest acceleration.
5. Power Limit %
Use this setting only if it is required
to limit the power available using
forward throttle, which is normally
only on very slippery conditions or
if an inexperienced user will drive
the vehicle.
The higher the percentage, the
slower the speed will be. 0%(De-
fault), 10%, 20%, 30%, 50% are
the available options.
This function can also be activat-
ed on the radio/transmitter, set the
forward throttle high point and re-
duce the %.
6. Braking force %
Gives you the ability to limit or in-
crease the amount of brake your
vehicle will have.
Available settings are 20%, 30%,
40%, 50% (Default), 60%, 70%,
80%, 90%, 100%
This setting can also be used in
the transmitter, by reducing the
reverse high point %.
7. Drag Brake force %
Provides a certain percentage of
brake in “off throttle” mode to
slow down the vehicle in an au-
tomatic linear way, which can im-
prove the handling and balance
of the car in particular difcult or
slippery conditions.
If you are running on a high trac-
tion track with tight corners, a
stronger setting is advised
If you are running in an open
track, a smaller percentage will
result in better control.
If you are running in dusty or slip-
pery surfaces, the lowest option
setting is advised
Available settings are 0% (De-
fault), 4%, 8%, 12%, 15%, 20%,
25%, 30%
8. Motor Rotation
Normal (default), Reverse
This function is only to be used if
the motor rotation is incorrect in
either sensor or sensor less mode.
9. Reverse power%
To limit the power available us-
ing reverse throttle. The lower the
percent or level the less speed will
be available in reverse. Normally
this function is not needed to mod-
ify, and higher settings created in-
creased system temperature and
may lead to overload and mal-
function.
Available settings are 30%, 40%
(Default), 50%, 60%.
10. Servo BEC V
Normally standard servo accepts
a maximum of 6V (default), which
is the limit V of such servo. Any in-
crease of V will damage the ser-
vo and lead to overheat and mal-
function.
Only change the setting to 7.2V
if the servo allows this according
to the manufacturer specs, which
are mostly high-power competi-
tion servo.
11. Neutral width
If the Esc is too sensitive, or the
throttle response nger position
is not stable, it is suggested to in-
crease the % from the 4% default
setting.
LED Program Box User manual
The LED program box is only compatible to Ultimate Racing Competi-
tion MX series brushless ESC/motors.
How to connect and use the
LED/LCD program card:
• Disconnect the battery from the
ESC
• Disconnect the signal/BEC wire
of the ESC from the receiv-
er; then plug it into the socket
marked with
• Connect the battery to the ESC
and turn on the ESC.
• If the connection is established
successfully, the rst program-
mable item will be displayed
on the LED screen.
Note: Please connect according
to the above sequence to avoid
malfunction.
• Menu: Change the programma-
ble items by pushing button once
• Value: Change the parame-
ter value of each programma -
ble item by pushing button once
• Reset: Set all values automat-
ically to the default settings
quickly
• OK: Save the (changed) param-
eters into the ESC; this is OBLIG-
ATORY to conrm the settings/
changes

Optional and Spare parts
ESC
• R4409 - Optional LCD pro-
gram box with PC connection
• UR4401-1 Wire connection set
ESC to Motor
• UR4401-2 Wire connection set
ESC to Battery
• UR4401-3 Replacement Cool-
ing fan
Motor
• UR4411-1 Replacement Ball
bearing set
• UR4411-2 Replacement Sen-
sor Module
• UR4411-3 Replacement mag-
net/rotor
• UR4411-4 Replacement Screw
set
• UR4411-5 Front motor plate
(with bearing)
• UR4411-6 Replacement Rear
motor plate (with bearing)
Model Description Ultimate MX8 Racing Motors Ultimate MX8 Race ESC
P/N Model UR4411 UR4412 UR4401
Cont Current 110A 130A 220A
Burst Current 150A 180A 1080A
Resistance NA NA 0.0002ohm
Application
1:8 on/off-road
cars/trucks
1:8 on/off-road
cars/trucks 1:8 on/off-road cars/trucks
Motor Type 6P 1900KV 6P 2100KV 4/6 Pole
Battery cell use 3S-4S LiPo 3S-4S LiPo 2-6S Lipo/5-18S NiMH
BEC Output NA NA 6.0-7.2V adjustable/ 3A
Dimension 690 690 55*48*37mm
Weight(g) 325g 328g 159g
ULTIMATE Programmable Item and Default setting
Programmable Items Programmable Value
1 2 3 4 5 6 7 8 9
1. Cut-off V/cell 3.0V 3.2V 3.4V Off 2. Running Mode F/B/R F/B 3. Motor timing X-Low Low Medium High X-High 4. Punch Smooth Low Medium High X-High 5. Power limit 0% 10% 20% 30% 50% 6. Braking force 20% 30% 40% 50% 60% 70% 80% 90% 100% 7. Drag Brake force 0% 4% 8% 12% 15% 20% 25% 30% 8. Motor Rotation Normal Reverse 9. Reverse power 30% 40% 50% 60% 10. Servo BEC V 6.0V 7.2V 11. Neutral width 2% 4% 6% 8% 10%
Specications
Please note, the above written specications and manual instructions are
for reference only, and may be changed without prior notice.