Aim MyChron5 660 User manual

User Manual
MyChron5 660 –660
Release 1.00

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INDEX
1 –MyChron5 660 in a few words 2
2 –What is in the kit 3
3 –Installation, connections and powering 4
3.1 –Installing MyChron5 660 4
3.2 –Installing the RPM wire 4
3.3 –Installing Exhaust Gas thermocouple 5
3.4 –Installing the Cylinder Heat Thermocouple 6
3.5 –Installing the speed sensor 7
3.6 –Connecting MyChron5 660 to sensors and LCU-One CAN expansion 8
3.7 –Powering MyChron5 660 10
4 –MyChron5 660 keyboard and configuration 11
4.1 –Configuration Wizard 12
4.2 –Configuration Menu 13
4.2 –Backlight 14
4.3 –System Settings 15
4.3.1 –Drive Setup 16
4.3.2 –RPM Setup 16
4.3.3 –Unit of measure 17
4.3.4 –LED Setup 17
4.3.5 –System Info 18
4.4 –Engine Pass Counters 18
4.5 –Date time 19
4.6 –Wi-Fi 19
4.7 –Language 20
4.8 –Configuration Wizard (see paragraph 4.1) 20
4.9 –Clear memory 20
5 –Data Recall 21
6 –Connection to the PC 22
7 –Data download and Analysis 24
8 –W-Fi Configuration 25
8.1 –Configuring MyChron5 660 as an Access Point (AP) 28
8.2 –Adding MyChron5 660 to an existing network 31
8.3 –Wi-Fi network settings 33
8.4 –The Internet connectivity 34
8.5 –Connection issues 34
8.6 –Working on MacTM with virtualized WindowsTM 35
8.7 –Connected device visualization issues 37
9 –Firmware and software upgrading 38
10 –Technical specifications and drawings 39

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1 –MyChron5 660 in a few words
MyChron5 660 is the new AiM system properly designed and developed for dragsters with integrated GPS Module. It features:
•1 speed input
•2 temperature inputs for cylinder head and exhaust gas thermocouple
•2 configurable alarm LEDs
•5 RGB LEDs configurable as shift lights or alarm
•4 Gb internal memory
•Lithium rechargeable battery
Is MyChron5 660 an expandable logger?
Yes, MyChron 5 660 can be connected to AiM LCU-One CAN and no configuration is needed. MyChron5 660 detects it at the
only condition that the connection is made before switching the logger on.
Which data does MyChron5 660 samples and records?
MyChron5 660 samples and records 50 times per second (50 Hz) Engine RPM, wheel speed in MPH (calculated by jackshaft, RPS
and final jackshaft RPM). All data can be downloaded to a PC and analysed through Race Studio Analysis software, freely
downloadable from www.aim-sportline.com sw/fw download section.

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2 –What is in the kit
MyChron5 660 kit includes:
•MyChron5 660 (1)
•CAN Extension Module (2)
•Dragster split cable (3)
•Phonic wheel kit (4) made up of Teflon and composed of two parts: an internal ring that includes 4 magnets and an external
bushing that protects the internal ring. The external bushing is fixed to the internal ring using two hex screws.
•Magnetic wheel speed sensor with nuts (5) composed of a sensing end inside the brass threaded cylinder and a 250mm
(10”) long cable
•Cylinder head thermocouple (6)
•Exhaust gas thermocouple (7)
•USB Cable (8)
•Battery charger with cable (9)
PHOTO OF THE KIT
Each item can be bought separately as spare part with the following part numbers:
•CAN Extension Module X08EXCAN00
•Dragster split cable V05CCB04MDR
•Phonic wheel kit for dragster DNKTRF660
•Magnetic wheel speed sensor XSMSNVB301
•Cylinder head thermocouple X05SOT14A4516MS
•Exhaust gas thermocouple 3CVGAS807
•USB Cable X90TMPC000
•Battery charger with cable available with four different plugs:
oEuropean plug X06AHB068
oUK plug X06AHB069
oUSA plug X06AHB070
oAustralian plug X06AHB071

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3 –Installation, connections and powering
Each item of the kit needs to be carefully installed, MyChron5 660 first. Incorrect installation may result in system malfunction.
3.1 –Installing MyChron5 660
MyChron5 660 allows the mechanics to set up the engine carburetion immediately before the race. For this reason it is
important to install it in a place where the mechanics can see its display while working on the dragster engine. A commonly used
position is the metal bulkhead which separates the racer’s seat from the engine. AiM recommends to install MyChron5 660
under the engine ON/OFF switch.
As shown here above on the right the logger needs a bracket. Use an aluminium or steel self-made bracket a 0.1”(2.5 mm)
thickness so to resist the vibration when the engine is on. Firmly fix the bracket to the vertical bulkhead and then fix MyChro5
660 to the bracket. Please be careful not to overtighten the mounting nut; this can cause damage to the display unit case.
3.2 –Installing the RPM wire
RPM wire needs to be connected to the dragster ON/OFF switch. The switch is in most cases a 2 poles (some switches only are a
1 pole). The two poles are RPM and coil. RPM wire should be going to the coil side of the kill switch. Running it to the grounded
side of the switch causes RPM signal to drop in and out and sometimes not to work at all. Being the ON/OFF switch opposite of
the bulkhead drill a 0.2”(5mm) hole inside the bulkhead and remember to insert the rubber wire-holder in the hole to protect
RPM wire from tears and cuts.
AiM recommends to keep RPM wire as far as possible from temperature ones while connecting the first to MyChron5
660. If RPM and temperature wires are wrapped together temperature channels might be noisy.

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3.3 –Installing Exhaust Gas thermocouple
Install EGT (Exhaust Gas Thermocouple) inside the exhaust header pipe at a distance of approximately 5.9” (150 mm) from the
exhaust port and between 25% and 50% inside the exhaust gas header. For a correct installation follow these steps:
•drill a 0.2”(5mm) hole inside the exhaust header
•fix the metal wrapper to the exhaust header pipe in the hole you have drilled; please remember: pipe hole and wrapper
threaded must be coaxial
•screw EGT thermocouple in the wrapper nut and firmly fix it. Plug the thermocouple male Mignon connector to the EGT
input wire of the “dragster split cable”
EGT thermocouple can also be installed using a steel adapter to be welded to the exhaust header following these steps:
•drill a 0.4”hole inside the exhaust header (1)
•weld EGT adapter inside the hole (2)
•screw the EGT thermocouple inside the EGT adapter (3)
•plug the EGT thermocouple male Mignon connector to the EGT input wire of the 2 temperatures split cable (part number
V02CCB04MDR).
Here below is an EGT thermocouple installed on the right and an installation with steel adapter on the right.

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3.4 –Installing the Cylinder Heat Thermocouple
To install the cylinder head thermocouple:
•remove the spark plug washer
•insert the sensor
•tighten the sensor but be careful to minimise movement in order to avoid damage.
•plug the thermocouple male Mignon connector to the sensor 2 temperatures split cable (part number V02CCB04MDR).
The image here below shows a cylinder head thermocouple correctly installed.

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3.5 –Installing the speed sensor
To sample the dragster speed a magneto-resistive speed sensor (part number XSMSNVB301) is to be installed at a 4-8 mm
distance from the phonic wheel (part number DNKTRF660) that is to be installed on the jackshaft (3/4” diameter) moved by the
clutch. The movement of jackshaft and wheel are related to the crown/pinion ratio.
The scheme below shows the layout of the installation.
To correctly install the speed kit, follow these steps:
•remove the pinion and insert the phonic wheel (internal diameter ¾”) on the jackshaft.
•fix the phonic wheel to the jackshaft screwing the nut.
•install the magneto-resistive speed sensor on a self-made bracket; please remember that sensing distance –the distance
between the sensor and the phonic wheel –is to be 4-8mm (0.15”-0.3”)
•plug the speed sensor male connector in the 4 pins Binder 712 female connector rear of MyChron5 660 highlighted here
below.

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3.6 –Connecting MyChron5 660 to sensors and LCU-One CAN expansion
To connect MyChron5 660 to the temperature sensors included in the kit:
•connect the 5 pins Binder 712 male connector of the dragster split cable to the 7 pins Binder 712 female connector placed
top rear of the logger.
•connect exhaust gas temperature thermocouple mignon male connector to one of the two mignon female connector of the
dragster split cable.
•connect cylinder head temperature thermocouple mignon male connector to the other mignon female connector of the
temperature split cable.
•connect the 4 pins Binder 712 male connector of the speed sensor to the 4 pins Binder 712 female connector placed central
rear of the logger.
•connect 5 pins Binder 712 male connector of CAN Extension Module to 5 pins Binder 712 female connector placed bottom
rear of MyChron5 660.
•connect 5 pins Binder 712 male connector of LCU-One CAN to 5 pins Binder 712 female connector of CAN Extension.
Please remember to always keep RPM wire well separated from thermocouples cables in order to minimize
interferences.
Here below is a complete connection schematic.

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3.7 –Powering MyChron5 660
MyChron5 660 is powered by a rechargeable lithium battery. When the battery level is low the corresponding icon blinks on the
display (left image below) Disregarding this blinking can cause logger shut down during the race. Before shutting down a
warning message appears on the display.
To recharge the battery remove it from the logger unscrewing the screws highlighted here above on the right, place it on the
charger shown here below on the left. The charger has a green LED on the bottom (right image below) that blinks while charging
the battery. When the battery is charged it becomes steady.

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4 –MyChron5 660 keyboard and configuration
MyChron5 660 has 4 metal pushbuttons.
The pushbuttons are used to
•MENU/<<:
oenter configuration menu.
oscroll to the previous option.
•>>/OFF:
oscroll to the next option.
oswitch MyChron5 660 off
•MEM/OK:
orecall sampled data (left image below)
oconfirm a choice.
•ON/VIEW:
oswitch MyChron5 660 on
ocheck that all sensors and expansions are connected and work properly as well as to know the number of recorded
tests; it also shows MyChron5 660 serial number bottom left of the page (right image below).
Please note: MyChron5 660 has an auto power off features that switches it off after 10 minutes of inactivity.

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4.1 –Configuration Wizard
MyChron 5 660 has a very useful configuration wizard that automatically activates when switching MyChron5 660 for the vey
first time. It allows to quickly configure language, temperature and speed measure unit as well as RPM scale.
Please note: it will start each time MyChron5 660 is switched on until it is completed at least once. On the contrary once
completed it is possible to restart it scrolling the icons in “MENU”page and selecting the icon shown here above. Images here
below show the sequence.
Use “CHANGE”button to select the options and “OK”button to switch from the steps. Please refer to the single paragraphs to
know which options are available for each function.

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4.2 –Configuration Menu
All MyChron5 660 configuration option can be set via keyboard. Press “MENU/<<” to enter the Menu and this page shows up.
The icons are for:
Setting MyChron5 660 backlight
Setting MyChron5 660 Wi-Fi
Enter MyChron5 660 “System setting” menu
Setting MyChron5 660 language
Setting MyChron5 660 Engine pass counters
Enter MyChron5 660 Configuration Wizard
(see paragraph 4.1)
Set MyChron5 660 Date and Time
Clear MyChron5 660 memory

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4.2 –Backlight
To set MyChron5 660 backlight select the icon shown here above in “MENU” page and press “ENTER”.
Here it is possible to set:
•backlight colour; available options are:
ocyan
owhite
opurple
ored
ogreen
oyellow
oblue
omagenta
•night vision:
oON
oAUTO: the ambient light sensor placed central left od MyChron5 660 switches the backlight ON/OFF according to the
ambient light conditions
oOFF
Use:
•“CHANGE” button to change the setting
•“PREV”/”NEXT” buttons to scroll the options
•“EXIT” to quit and save

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4.3 –System Settings
To set MyChron5 660 select the icon shown here above in “MENU” page and press “ENTER”.
This menu allows to set the main functions of MyChron5 660 as well as to see the information of your MyChron5 660.
Drive Setup
LED Steup
RPM Setup
System Info
Unit of measure

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4.3.1 –Drive Setup
To set MyChron5 660 Drive select the icon shown here above in “System Setting” page and press “ENTER”. This page allows to
setup the following parameters:
•Tire Rollout or wheel circumference (range 10.00-120.00 inches): this parameter is fundamental to correlate wheel angular
speed and dragster speed.
•Drive gear (pinion) teeth number (range 5-49)
•Driven Gear (crown) teeth number (5-199)
•Recording time: Standard or extended (minimum shaft standard 3500; minimum shaft extended 1500); with tall gearing in
high index classes, extended recording time will assure that data at the beginning of the pass are not clipped.
4.3.2 –RPM Setup
To set MyChron5 660 RPM select the icon shown here above in “System Setting” page and press “ENTER”. This page allows to
setup the following parameters:
•Full scale RPM: range value: 8.000-16.000
•RPM Factor, available options:
ox1
ox2
o/2

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4.3.3 –Unit of measure
To set MyChron5 660 RPM select the icon shown here above in “System Setting” page and press “ENTER”. This page allows to
setup the temperature Unit of measure. Available options are: Fahrenheit and Celsius.
4.3.4 –LED Setup
To set MyChron5 660 LED select the icon shown here above in “System Setting” page and press “ENTER”. MyChron5 660 top
LEDs can work as temperature alarm. To set them follow these steps:
•select the icon here above and press “ENTER”.
•Default setting of LED 1 is NONE: press “CHANGE”.
•The LED links to Exhaust Temp: press “NEXT”
•Low EGT Alarm Setup selects: press “ENTER”
•First setting in alarm threshold (range 1-1000 °F / 1-550° C)
•Second setting is LED Colour: available options are:
oRed (as in the example)
oGreen
oYellow
oBlue
oMagenta
oCyan
oWhite
•Select the desired option and press “OK”
•Third Setting is blinking frequency; available options are:
oslow blinking (as in the example)
ofast blinking
ocontinuously
•Select the desired option and press “OK”.
•Repeat the operation for LED 2.
The image below shows the sequence of the pages as they are shown by MyChron5 660.

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4.3.5 –System Info
To see MyChron5 660 information select the icon shown here above in “System Setting” page and press “ENTER”.
4.4 –Engine Pass Counters
MyChron5 660 is equipped with 4 engine pass counters. To activate/reset any of them press the icon above in “MENU”page and
the related page shows up.
The Engine pass counter active is indicated by an arrow (“Engine #1:…. 49”here below on the left). Press “RESET” to reset it.
To activate another engine pass counter:
•press “NEXT”and scroll all counters to reach the desired one.
•press “ACTIV” to activate it.

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4.5 –Date time
To set MyChron 5 660 Date and time select the icon shown here above in “MENU” page and press “ENTER”. Here you can:
•set Time zone: press “ENTER”to enter time zone page and select the desired time zone (left image below)
•enable/disable daylight saving time: press “CHANGE”to switch among the options.
•set time format: 12H or 24H: press “CHANGE”to switch among the options.
•set Date Format: MM/DD/YY or DD/MM/YY or YY/MM/DD: press “CHANGE”to switch among the options.
•press “EXIT”to quit and save.
4.6 –Wi-Fi
To set MyChron 5 660 Wi-Fi select the icon shown here above in “MENU” page and press “ENTER”. Here you can manage Wi-Fi
as well as reset its configuration.
Wi-Fi modes are:
•Auto: switches Wi-Fi on when the vehicle is stopped and automatically switches it off when MyChron5 660 starts recording
•ON: Wi-Fi always on
•OFF: Wi-Fi always off
“Wi-Fi Reset CFG” allows you to reset Wi-Fi configuration and is very useful if you do not remember the Wi-Fi password.