www.nkrowing.com.au
4
INSTALLING THE SEAT MAGNET & RATE SENSOR
The seat magnet and rate sensor work together to measure your rating while rowing. The magnet
must pass within ¾" of the sensor in order to register a rating, so it is important to make sure that
the seat magnet and sensor are installed correctly.
Install the Rate Sensor:
Refer to Figures 1a and 1b. Note the position of the
sensor - it should be close to the center of the seat
travel and it MUST be perpendicular to the long axis
of the shell.
It is not necessary for the sensor and magnets to be
centered between the rails as shown in Figure 1a.
They may be positioned off center as shown in Fig
1b. However, the holes in the magnet assembly MUST
pass directly over the holes in the sensor. The dashed
horizontal line in each figure indicates the correct
alignment.
PLEASE NOTE: The sensor needs to be installed at
the center of the seat travel. If the sensor is too close
to either end of the seat travel, the StrokeCoach may
indicate ONE-HALF the correct stroke rate.
The vertical spacing between the stroke sensor
and the magnet assembly is critical. If the magnet
passes too far from the sensor the sensor may fail to
register every stroke, resulting in low readings. If the
magnet is too close to the sensor, it may strike the
sensor and knock one or both out of place.
Because the distance between the seat plate and
the deck varies considerably from shell to shell, you should start by measuring this distance. Refer
to Figure 2.
- If the distance measured as in Figure 2 is between 7/8"
and 1 1/8", you may mount the sensor and magnet with
no further adjustment.
- If the distance measured as in Figure 2 is GREATER than
1 1/8", you will need to make a spacer of appropriate
thickness. You may choose to shim the sensor or the
magnet; whichever is easier. DO NOT use any magnetic
material for your shim. Many boat builders have shims
designed to fit their particular seats.
- If the distance measured in Figure 2 is LESS than 7/8", the magnet and the sensor will interfere.
Try mounting the magnet on the upper side of the seat plate or the sensor on the underside of the
deck. As a last resort, you will have to remove material from either the seat or the deck (this almost
never needs to be done).
FIGURE 2: SENSOR & MAGNET SPACING
Seat Plate
Deck
Sensor
Magnet
1 1/8" Max
7/8" Min
3/8" Max
3/4" Max
Center-to-Center
1/2 Distance
of Seat Travel
FIGURE 1a: SENSOR & MAGNET INSTALLATION
(Sensor Installed on Centerline of Seat)
Sensor
Magnet
Cable Clip
Seat
1/2 Distance
of Seat Travel
FIGURE 1b: SENSOR & MAGNET INSTALLATION
(Sensor Offset Centerline of Seat)
Sensor
Magnet
Cable Clip
Seat
