First, make sure your speedometer is working right: move the reed switch back and forth next to the magnet in the wind cups, and you should see the speedometer register a few MPH. With the Davis wind cups, the magnet is embedded in the plastic, although you can see it on the bottom of the cups.
Hier kan je zien dat de magneet in de cup zit
Hier kan je zien dat de magneet in de cup zit
Sol lucet omnibus: De zon schijnt voor iedereen (Petronius).
