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Transducer
Not a problem using a thru hull inside as a shoot through. Providing you find a clean spot in the hull, and have no bubbles in the glass, or in whatever you use to fasten it down. Cored hulls don't do well, but a solid glass hull will do fine. Put it in a baggie of water, sit it in the bottom of the hull where you want to mount it, and turn the finder on. Move the baggie around till you find a spot that works well. Then clean the spot good, maybe a light sanding and a wipe down with acetone, and mount the ducer. Some use 5200 for mounting, others lots of different things. Think I saw one post that they poster used a wax toilet bowl ring. I prefer Marine Tex. Just make sure there are no air bubbles anywhere under the ducer. No bubbles, no problem.
Not a problem using a thru hull inside as a shoot through. Providing you find a clean spot in the hull, and have no bubbles in the glass, or in whatever you use to fasten it down. Cored hulls don't do well, but a solid glass hull will do fine. Put it in a baggie of water, sit it in the bottom of the hull where you want to mount it, and turn the finder on. Move the baggie around till you find a spot that works well. Then clean the spot good, maybe a light sanding and a wipe down with acetone, and mount the ducer. Some use 5200 for mounting, others lots of different things. Think I saw one post that they poster used a wax toilet bowl ring. I prefer Marine Tex. Just make sure there are no air bubbles anywhere under the ducer. No bubbles, no problem.
One safer way to mount it, rather than using MarineTex epoxy or 5200, is to glass a 4" PVC pipe clean out fitting to the hull interior where you want the transducer, and then mount the transducer in a screw-in cap for the cleanout fitting. Fill the pipe with mineral oil. Put the end cap and transducer in and screw it in tight. If you ever have to remove or replace the transducer, all you have to do is unscrew it from the pipe cap.
I think Sailingdog has it right if you want to go to the trouble of mounting the transducer in its own "in-hull thru-hull." But I've had luck mounting a transducer more or less doing what Nice N Easy suggests, but I would not use 5200 or MarineTex to do so. They make a more or less permanent mounting and would make moving the transducer pretty difficult. While not recommended by some, I have successfully used silicone to mount the transducer. The key is making sure you work any bubbles out of the silicone before setting the transducer in it. Use of silicone makes moving the transducer at some later date much easier.
One reason I generally recommend doing it the way I describe is that it helps protect the transducer from getting moved or knocked about. Also makes maintenance and repair a lot easier. Why build in obsolescence when you can make it so that the design is easy to repair and maintain???
I'm not a big fan of using silicone anywhere on a boat. The residual oils that can be left behind by silicone sealants are almost impossible to clean up properly and can prevent future repairs from bonding well and such.
I'm not a big fan of using silicone anywhere on a boat. The residual oils that can be left behind by silicone sealants are almost impossible to clean up properly and can prevent future repairs from bonding well and such.
i did what saildog suggest...
works great.
send me a pm and i can send diagram. it is about 270kb in size. just a tad too large to post here.
works great.
send me a pm and i can send diagram. it is about 270kb in size. just a tad too large to post here.
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