Can a thru hull transducer be used in hull?

[Miller]

As the title suggests really, due to my vast marine electronics knowledge!

I have been looking for a transducer and wondered if a thru hull/in hull transducer can be used inside the hull so I dont have to cut a hole....and sink the boat!

[Pete7]

Yes, despite what the manufacturers say just stick it in with some B&Q sealant, avoid any bubbles in the sealant though.

Pete

[Jono]

"Paging JW, Paging JW"

Mr Garmin says.... use epoxy... http://www8.garmin.com/support/faqs/faq.jsp?faq=119

[AndrewH]

In terms of the acoustics - yes no problem.

However as correctly pointed out by Pete bubbles are an issue since they will all act as small reflectors and give a confused near surface signal to the head unit. This is partly why epoxy is recommended as it is often low enough viscosity with slow enough cure time to allow bubbles to rise out of the mix. If you can, slow the cure of the epoxy down whilst de gassing. This can often be done by pouring it into a shallow, flat tray, rather than leaving it in the mixing pot. This stops the exotherm speeding up the cure. Vacuum degassing is best, but not everyone has access to this kind of kit

[Miller]

cool thank you

Any recommendations for a navman 8120?

[MikeCC]

Originally Posted by Jono

"Paging JW, Paging JW"

Mr Garmin says.... use epoxy... http://www8.garmin.com/support/faqs/faq.jsp?faq=119

Originally Posted by AndrewH

In terms of the acoustics - yes no problem.

However as correctly pointed out by Pete bubbles are an issue since they will all act as small reflectors and give a confused near surface signal to the head unit. This is partly why epoxy is recommended as it is often low enough viscosity with slow enough cure time to allow bubbles to rise out of the mix. If you can, slow the cure of the epoxy down whilst de gassing. This can often be done by pouring it into a shallow, flat tray, rather than leaving it in the mixing pot. This stops the exotherm speeding up the cure. Vacuum degassing is best, but not everyone has access to this kind of kit

Not sure even JW can top that explanation!

Some people experiment with silicone sealant for location and then commit with epoxy once best spot is found.

[jwalker]

[AndrewH]

sorry JW - not trying to steal your crown

[Limey Linda]

Found some good crimp connectors for this job. They are closed end butt splices for telephone wires. Filled with a self sealing gel that encapsulates when you crimp making a airtight and watertight seal. About the size of a large pea. Crimped with ordinary pliers

[gtflash]

recently glued a navman triducer in the keel of my boat with silicone and it works great! it had a hall effect paddle wheel which i took off as sat lower than the main sounder but no problems at all!