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Go Back   SailNet Community > On Board > Gear & Maintenance > What are these things?
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Thread: What are these things? Reply to Thread
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Topic Review (Newest First)
05-14-2013 10:52 AM
Mechsmith
Re: What are these things?

It does not have to touch the water. It only needs a seamless interface with it. This is provided by the "cup" being filled with water or mineral oil sufficient to fill the space between the inside of the hull and the face of the transducer. This is the way it was done in my 79 Seafarer. In my 72 I mounted the transducer in a wet spot in the bilge. Occasionally I have to throw a cup of water in the bilge to keep it working.
05-14-2013 09:19 AM
blutoyz
Re: What are these things?

Good thing you didn't haul out, take it out, fill it back in, barrier coat, and bottom paint.

05-13-2013 10:09 PM
OleSwole
Re: What are these things?

05-13-2013 10:08 PM
OleSwole
Re: What are these things?

So the other day, I took a screwdriver and placed it crosswise through the stiff wire on top, and gently nudged it to create a clockwise pressure.

Today, I was thrilled to see it was dry as a bone.

SO...in case some poor sap finds himself in this position in the future, and happens to see this thread, it will make me feel good to know he was helped.
05-13-2013 09:58 PM
OleSwole
Re: What are these things?

Quote:
Originally Posted by Mechsmith View Post
Mine does not go through the hull. It shoots through the fiberglass. The flange was simply glued to the hull and the transducer mounted into the flanged part with the threaded knurled cap. No through hull required. This is the same way it worked with my new depth sounder in another boat.
I thank you for the reply, Mechsmith. I'm trying to process the idea that you're putting forward, but am unable to picture how the sensor or sensing apparatus would meet the water.
05-08-2013 12:49 PM
Faster
Re: What are these things?

Quote:
Originally Posted by Mechsmith View Post
Mine does not go through the hull. It shoots through the fiberglass. The flange was simply glued to the hull and the transducer mounted into the flanged part with the threaded knurled cap. No through hull required. This is the same way it worked with my new depth sounder in another boat.
Interesting.. and certainly a possibility - and a good one at that. Come to think of it there's been no mention of any leakage, right??
05-08-2013 12:45 PM
Mechsmith
Re: What are these things?

Mine does not go through the hull. It shoots through the fiberglass. The flange was simply glued to the hull and the transducer mounted into the flanged part with the threaded knurled cap. No through hull required. This is the same way it worked with my new depth sounder in another boat.
05-07-2013 09:46 PM
OleSwole
Re: What are these things?

Quote:
Originally Posted by Mechsmith View Post
Identical to mine, which shoots through the hull for depth gauge transducer. The hole is in the hull liner only. 79 Seafarer 22
Mechsmith, have you ever switched the transducer with a plug?
05-05-2013 10:06 AM
Mechsmith
Re: What are these things?

Identical to mine, which shoots through the hull for depth gauge transducer. The hole is in the hull liner only. 79 Seafarer 22
05-05-2013 12:19 AM
OleSwole
Re: What are these things?

Thank you, ReefMagnet. I did not find the plug on the boat, so ended up ordering one online to try and get this thing taken care of asap. Research appears to have narrowed it down to an RS transducer blanking plug, and the RS site was the only place I could find one.
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