V2.3
US
4
Attach the clip at the end of the RPM wire directly to any part
of the spark plug wire.
See photo.
RPM Pick-Up
Temperature Sensor(s)
, the My-Chron 2 will accept two
temperature inputs and comes with your choice of 1 standard
thermocouple to measure: exhaust gas temperature, cylinder
head temperature or water temperature.
•
The
exhaust gas
thermocouple, or EGT, is designed to
measure the temperature of the exhaust gas. The tip of
the probe is where the measurement is taken, we
recommend 25-50 percent insertion into the exhaust gas
flow. Mounting the probe as close to exhaust port as
possible, check with your motor builder for his
recommendations. The probe is made of a semi-soft
material, which will allow you to bend the probe up to 90°
by hand. This allows you to cleanly route the wire and
helps avoid any accidental breakage from the probe
sticking up. The range of this sensor is 0-1832° F.
See
photos.
•
The
cylinder head
thermocouple, or CHT, is designed to
measure the surface temperature of the head. This
washer like thermocouple is intended to replace the
washer of the spark plug. It is possible to use the spark
plug washer in addition to the thermocouple, but this will
increase the cc’s in the combustion chamber slightly.
See photo.
•
The
water temperature
thermocouple has many
installation options. You can tap the head, or if the head
has an elbow for the return line, you can tap the elbow.
AIM offers an optional return line fitting designed for this
specifically for this purpose. This thermocouple can be
also used for oil temperature. The tap size for this probe
is 5.0mm x 0.8 pitch.
See photo
.
Shown with optional fitting.
Wheel Speed
, there are two parts required for wheel speed
sensing. The actual sensor and the magnet attached to the
wheel. We recommend mounting to either front wheel. To
attach the magnet, first clean the inside of the wheel to be
used to ensure that it is free of oil and dirt. Remove the
adhesive back from the Velcro to which the magnet is
attached. Place the magnet near the outer edge of the wheel
and press firmly to ensure good adhesion. The next step is to
attach the wheel speed sensor to the front spindle. The small
bubble at the tip of the sensor opposite the cable side is the
sensing element. This sensing element needs to line up with
the magnet and not be further than 2-5mm from the magnet.
When routing the wheel speed cable, make sure to allow
some slack for the wheel to turn.
See photo.
Beacon
, the beacon or infrared transmitter is to be placed
near the edge of the track. The height of the beacon should
be near the height of the receiver, a camera tripod works well,
but is not included. The effective range of the beacon is 5-20
meters in the worst conditions. Because the beacon is so
powerful, we recommend placing the beacon on the inside of
