AiM MyChron4 User Manual
MyChron4
User Manual
MyChron4 is an extremely innovative instrument in the world of multi-purpose kart
loggers. Designed and developed to be the heart of a modular end expandable
system, MyChron4 perfectly connects to a wide range of expansions.
This characteristic makes it unique and fitting any pilot need: from the beginner that
needs few basic information to the pro that needs to analyse his and its kart
performances in detail.
Moreover, thanks to the numerous and innovative functionalities of Race Studio
Analysis, the analysis software, strengths and weaknesses of any test session will
be analyzed in an easy and intuitive way. The software is available for free download
at www.aim-sportline.com and www.mychron4.com.
Equipped with a wide graphical display, MyChron4 can display sampled data as
histogram and, using MyChron4 Picture Manager, the free software, it is possible to
upload bitmap images, like, for example your team logo.
When connected to the expansions that AIM designed and developed for his most
innovative loggers, from Gps Module, to Data Hub, from Lambda controller to
eBox, MyChron4 becomes a data logger with a virtually infinite number of channels.
Moreover, thanks to the practical download via Data key, MyChron4 does not need
a Computer immediately available on the track and allows data download on different
computers.
MyChron4, like all AIM products, is always improving: this is why it is suggested to
periodically check www.aim-sportline.com or www.mychron4.com to know if AIM
released new firmware and/or software for MyChron4.
MyChron4
User Manual
Release 1.03
INDEX
1 – MyChron4 display............................................................................................... 4
2 – MyChron4 connections and power................................................................... 5
2.1 – MyChron4 external power cable.............................................................................................6
3 –Temperature sensors for MyChron4.................................................................. 7
4 – MyChron4 receivers ........................................................................................... 8
5 – MyChron4 installation........................................................................................ 9
5.1 – Fixing RPM cable on 4 strokes engines (Honda, Briggs & Stratton).................................. 9
5.2 – Fixing RPM cable on 2 strokes engines (Tag, Junior, ICA, FA, ICC ecc..)....................... 10
6 – MyChron4 configuration and wizard............................................................... 11
6.1 – MyChron4 configuration menu............................................................................................. 12
6.2 – Control panel or custom configuration ............................................................................... 13
6.2.1 – RPM Setup .......................................................................................................................15
7 – MyChron4 data analysis................................................................................... 16
7.1 – Session Summary..................................................................................................................16
7.2 – Lap time histogram................................................................................................................17
7.3 – RPM Graph.............................................................................................................................. 18
7.4 – Split summary ........................................................................................................................ 19
7.5 – Best Rolling Lap and Best theoretical................................................................................. 20
8 – Data key for data download............................................................................. 21
8.1 – MyChron4 data download ..................................................................................................... 21
9 – MyChron4 firmware upgrading (firmup)......................................................... 23
www.aim-sportline.com – www.mychron4.com
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MyChron4
User Manual
Release 1.03
1 – MyChron4 display
MyChron4 display shows a lot of information. Here below they are explained in detail.
1. Power on button
2. Data recall button
3. Menu and scroll button
4. Power off and scroll button
5. RPM alarm led
6. Led AL1 temperature alarm
7. Lap time
8. Temperature value with configurable unit of measure
9. Digital RPM value
10. Lap number
11. External battery alarm
12. RPM graph bar
13. Bar graph scaling in thousands
www.aim-sportline.com – www.mychron4.com
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2 – MyChron4 connections and power
On the back of MyChron4 are three connectors, shown below.
Connector 1 –Temperature input
MyChron4
User Manual
Release 1.03
It allows the connection of a temperature sensor among those available to measure
water, cylinder head or exhaust gas temperature.
Connector 2 – Lap time receiver
It allows to connect optical or magnetic lap time receiver.
Connector 3 – eBox input
It is for MyChron4 external power, eBox and Data key connection, data download
on a Pc. Here below MyChron4 eBox is shown.
www.aim-sportline.com – www.mychron4.com
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MyChron4
User Manual
Release 1.03
2.1 – MyChron4 external power cable
MyChron4 can also be powered from an external power source but in this case it
needs the proper power cable, shown below.
External power cable has a double function: it powers MyChron4 using the engine
battery or the power produced by the master switch and detects RPM value through
this same cable when it is connected to the master switch, avoiding the installation of
RPM cable. External power cable is expected for some 4 stroke engines (Honda,
Briggs & Stratton).
Note: MyChron4 has an auto-power off function after eights minutes of inactivity that
switches the logger off also if externally powered.
www.aim-sportline.com – www.mychron4.com
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MyChron4
User Manual
Release 1.03
3 –Temperature sensors for MyChron4
MyChron4 can be connected to different temperature sensors, shown below.
CHT Thermo resistor:
detects the temperature of the cylinder
head and should be mounted removing
the spark washer to keep the same
compression ratio.
CHT Thermocouple:
Detects the temperature of the head of
the engine and should be mounted
removing the spark washer to keep the
same compression ratio.
Water Thermocouple:
Should be mounted on the proper
adaptor - shown on the right - wrapping
the thread with Teflon™ to ensure the
seal.
EGT Thermocouple:
Should be installed on the exhaust pipe
at a distance of 100 – 120 mm from the
piston shell to have a correct reading of
the value.
www.aim-sportline.com – www.mychron4.com
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MyChron4
User Manual
Release 1.03
4 – MyChron4 receivers
MyChron4 supports both optical and magnetic lap receiver (shown below). The
system automatically recognizes the connected receiver.
Magnetic receiver
Optical receiver
As explained more in detail in the chapter concerning MyChron4 configuration, in
case the track has more magnetic strips/optical transmitters, it is necessary to set the
logger as to indicate:
• number of magnetic strips /transmitters installed on the track
• magnetic strip/transmitter corresponding to start/finish line
www.aim-sportline.com – www.mychron4.com
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