STACK Dash-2 Kart Logger
Error! Main Document Only.5. Installing the Dash-2 Kart Logger
Users Guide
31
Fitting the Wheel speed sensor
The
Dash-2
Kart Logger is supplied with one STACK
ST669 proximity sensor. This sensor is used to measure
wheel speed in order to display the kart's speed in MPH
or km/h. The sensor provides an electrical pulse to the
system each time a magnet passes the sensor.
Generally it is best to measure the speed from an
outside front wheel, as wheelspin and brake lockup
affects the distance calculation. This then degrades the
accuracy of the Performance Meter and multi-run
overlays on the PC.
Procedure
1.
It is absolutely vital that the magnets are not
mounted where they may be subjected to high
temperature, as this takes away their magnetic properties and renders the wheel speed channel inoperative. The areas to avoid in
this respect are brake discs and hot exhaust gases.
1.
Glue bond a single magnet to the flat inner rim of a wheel, (normally
one of the front wheels), with the unmarked end of the magnet
against the wheel rim and the red end of the magnet clearly visible
once the magnet is glued in place.
The best way to use the adhesive is to clean the wheel with some
brake cleaner or solvent thinners. Then put a thin film of activator
on the wheel. Put a bead of the adhesive on the end of the magnet, and push it onto the activator. Leave for 5 minutes to cure.
2.
Bolt the sensor onto the steering arm and tighten it in place with a 2 mm gap between it and the magnet.
3.
The Wheel Speed sensor is fitted with a mini sure seal connector. The wire from the sensor should be routed along the floor of the
kart, up the steering column or back of the Nassau panel, then plugged into the system harness connector labelled
WS
.
Fitting the Throttle or Brake Position Sensors
The sensors are in the form of a lever arm operated sensor, fitted with a mini sure seal connector. With the 120º of movement lever
arm located on the top of the sensor, the arm operates in a counter-clockwise direction in normal operation.
