Does anybody have a suggestion on how to keep the knot meter wheel free from fouling? My speed sensor wheel seems to pick up small amounts of seaweed or floatsum which stops if from spinning and registering speed. It's fine at the start of the season, but by this time of the year, I have to clean it frequently to free it up.
I have a Raymarine unit. Our previous boat had a Data Marine unit. After 15 years, it too became very sensative to small amounts of seaweed. Data Marine suggested I replace the wheel and pin. They claimed it only took a tiny bit of wear to stop the unit from measuring the correct speed; the pickup gap would grow too large to generate a signal from the wheel. Sure enough, the new wheel worked great and addressed the issue. Can the Raymarine wheels be replaced? I couldn't find any info on their site.
Paul & Wendy Keyser
Newburyport MA/Rye NH
2005 C36 MKII #2257