Join Date: Jun 2014
Location: Florida West Coast
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Re: Airmar / Raymarine DST800 Transducer Issue
I have a new Airmar triducer installation, with a single flapper in the thru-hull. I am experiencing a 17" v-shaped geyser when the ducer is removed, and you can see visually that the flapper valve is completely closed. We hauled the boat (again, more $$$) to confirm that the flapper was not defective. This is no BS - I couldn't get anyone to believe me so I made a video. If you haven't experienced this you need to see it. The geyser drenches the bilge and splashes the sole. You need three hands to remove the ducer, control the geyser, and install the plug.
For those with detached flappers, how would you describe the geyser you are experiencing?
How about anyone with flappers intact? What are you observing?
The speed ducer Airmar supplied with my OEM Raymarine instruments 13 years ago only "gurgled", producing about 4 oz of sea water during a rapid transition. This one must put out 2-3 times that. Sure, my geyser is better than no flapper at all but come on Airmar, what were you thinking? Does the benefit of combining speed, depth, and temperature in one ducer justify such a massive cleanup?