Transducer in the hull

[ed72vette]

What can be used to adhere the transducer to inside the hull. Has anyone used 3M 5200?

 

[cuzner]

Re: Transducer in the hull

Your supposed to use slow set epoxy... I,m not farmiliar with 3m 5200.<br /><br /> Jim

 

[islandboat]

Re: Transducer in the hull

I've used 5200 sealant / adhesive to secure a plastic transducer to the inside of the hull. It worked fine. Just make sure there are no air pockets in the sealant and squeeze out as much as possible by pressing down on the transducer to keep the sealant layer as thin as possible . I'm not sure if is the correct stuff to use, but it did work.

 

[Moody Blue]

Re: Transducer in the hull

From what I know of ultrasound,you may be asking for trouble using the 5200. If you do use it, the material between the transducer face and the hull surface must be kept to an absolute minimum. The inherent properties of the 5200 will attenuate the signal much more so than epoxy would. The reason for using the slow set epoxy is to allow enough time for all the air bubbles in the epoxy to travel up and away from the face of the transducer. Air also is a big attenuator of ultrasound.

 

[ed72vette]

Re: Transducer in the hull

Thanks for the replies. Trophy175, did you notice any signal degragation with the 5200? <br />I am in the process of waiting for the 5200 to dry so I can try it out. The tube says it takes 7 days to dry. I did use a very thin layer with a lot of pressure. If this does not work I will mout it back on the transom. If it works reasonably well I can always use epoxy later. <br />Rod C,I have had hard time finding slow dry epoxy. Where and what are you using? <br />Thanks<br />Ed

 

[Tatorbug]

Re: Transducer in the hull

5200 doesn't let loose very easy. You should be fine with a very thin layer and no air pockets. The hull itself probable gives more attenuation of the signal than the sealant.

 

[islandboat]

Re: Transducer in the hull

I used 5200 to glue the transducer down on 2 different boats and saw no problems with the ability of the bottom machine to pick up a good signal. Tatorbug is right about the hull possibly giving as much trouble as the 5200. Is the bottom of the hull parallel with the seabed or do you have a deep v hull? I had to fabricate a block from fiberglass and then fiberglass that block to the inside of the boat to get the transducer to "shoot" straight down. That's the reason the transducer was mounted on the inside of the hull. I didn't want a big adapter block and the transducer stuck to the outside of the hull.