Mine is from Raymarine and it is removable for cleaning while the boat is in the water. I keep the dummy plug in the thruhull except when I need to use the speed instrument. Takes a couple minutes to swap out, but not a big deal. My old one was a 1986 Standard Horizon that was still working when I replaced all of my instruments a couple years ago. You can use a water based antifouling paint on it if you wish, but I don't bother.

Bill Bina


On 11/30/2016 8:51 AM, Della Barba, Joe via CnC-List wrote:

For ages I have had a Standard-Horizon SL1 speed log. The instrument eventually died and was replaced. The impellor was always getting gunked up and then died for good. The instrument died again. I got one instrument and two impellors from Fleabay. One impellor died quickly and the other one died just now LThey were all new in box too.

I am about ready to just look at the GPS and give up on this. Is there a modern speed sensor that actually lasts? I remember replacing a ton of them back in the day as an Autohelm dealer.

Joe

Coquina



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