17
8. Data input
(
4
)
Installing the magnet and
sensors
Use a screwdriver to temporarily
secure the magnet to a spoke on the
right hand side of the front wheel as
shown in fig4.
Put a rubber shim between the fork
and the sensor as shown in fig5.
(Fork diameter range is 11- 35mm)
Place the magnet on one of the two
sensor lines.
Adjust the position of the magnet so
that the distance between the
magnet and the sensors is 1- 5mm.
Secure the magnet and the sensors
firmly in these positions.
(
1
)
Measuring the tire circumference
To measure the tire circumference,first ensure that the tire is inflated to the
standard tire pressure. Make a mark on the tire and the ground at the point where
the tire touches the ground, and move the bicycle forward one full revolution of
the front wheel while seated on the bicycle, Mark the point where the marking on
the tire touches the ground again. Measure the distance between the two points
in millimeters. Round the distance to the nearest multiple of 5mm.
Fig.4
Fig.5
Sensors
Magnet
1- 5 mm
Ø 2.1mm or less
Front Fork
Pull
Sensors
Front Fork
1. Km or Miles
2. Tire circumference
3. No.of chainring teeth
4. No.of sprocket teeth
5. Type of rear derailleur
6. Current time
[]
Example
2028 - 2032mm
• • • • • 2030mm
2033 - 2037mm
• • • • • 2035mm
2038 - 2042mm
• • • • • 2040mm
Roll forward
Wheel circumference
Speed sensor
Plastic tie
