Trek 8i User Manual

Placing the magnet

The wheel magnet must be aligned so that it passes across the

sensor. As the magnet passes the sensor, it must be no further

from the sensor than 1 to 3mm (1/32 to 1/8 inch).

The wheel magnet has a ‘T’ shaped slot with two configura-

tions: round spokes and flat or bladed spokes (Figure 7).

To install the wheel magnet

1. Remove the screw from the magnet.
2. Slide the slot in the back of the magnet

over the spoke.

For a flat or bladed spoke, start the

spoke near the end where the spoke is

round, and align the top of the ‘T’ with

the spoke as you slide the magnet up the

blade (Figure 7).

3. Thread the screw into the magnet until it

is snug against the spoke.

Installation

Figure - Installing magnet on

round or oval spokes