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M260 Install completed on Ali boat

Old 03-24-2007, 09:04 AM
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Default M260 Install completed on Ali boat

Thought Id share these pics to THT'ers of our wet box install just completed of M260 1KW Tducer. Hope pics show enough detail, any questions fire away and I will try and help. Anyhow this is just another option for you all to explore. If the yellow poly plate gets a hole in it it wont leak into the hull. This type of install has worked well with many boats done by my builder.

Ray







Old 03-24-2007, 09:10 AM
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Default Re: M260 Install completed on Ali boat

Sweet- what a great looking boat, too.

Will the poly take paint well?
Old 03-24-2007, 09:21 AM
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Default Re: M260 Install completed on Ali boat

Yes it will take paint however it must be primed with a primer made by sikaflex which is used to prime glass before adhesion. Or I cant see why an orbital sander and cleaning with prep wash before applying etch primer/paint. Im not going to paint mine but perhaps you could also purchase a poly sheet the same colour as what you want to paint it with. The sheet I used is 10mm thick That perhaps would be easier. Hope this helps mate

Ray
Old 03-24-2007, 07:51 PM
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Default Re: M260 Install completed on Ali boat

A very nice piece of work

How are ypu going to fasten the transducer?

THANKS for sharing
Old 03-24-2007, 07:57 PM
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Default Re: M260 Install completed on Ali boat

Nice job

BTW, what kinda boat is that? Shes sweeet
Old 03-24-2007, 07:58 PM
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Default Re: M260 Install completed on Ali boat

Good idea
Old 03-25-2007, 07:41 PM
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Default Re: M260 Install completed on Ali boat

1.The fastening of the tducer will be done with the original take down screws supplied by Airmar. All we did is tapped out the holes to the same thread.
2. We are then going to use marine sikaflex and place a bead of it on the O-ring that sits on the underside of the ducer casing. Then tighten screws but not all the way as the sealant must be left first to dry. When its dry then tighten screws all the way and this will ensure no leaks as it acts like a gasket. We have to do this as the top piece of the tducer kit box (not shown) which we arent using has a raised section that sits proud and compresses against the O-ring. We are also going to use this method on the hull plate.
3. The hull is an Airider tri-hull 24ft.

Ray
Old 03-26-2007, 10:14 PM
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Default Re: M260 Install completed on Ali boat

A nice creative job!
Old 03-27-2007, 12:14 AM
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Default Re: M260 Install completed on Ali boat

Won't air in the transducer box be a problem?
Old 03-27-2007, 03:54 AM
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Default Re: M260 Install completed on Ali boat

He's going to fill it with liquid, sheeesh!
Old 03-27-2007, 09:52 PM
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Default Re: M260 Install completed on Ali boat

Sorry, I must have missed that part.

Thanks for pointing it out though. Always nice to see new members willing to help out and be polite...
Old 06-03-2007, 09:46 PM
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Default Re: M260 Install completed on Ali boat

How thick is that yellow poly board? The design makes me a little nervous. If it fails, all that will hold back the water is the seal at the top of the transducer plate and the plastic screws that you use to add more liquid to the tank.

Clever design, but I wouldn't want to depend on 1/4 inch of poly board to keep my boat from sinking. The upward pressure on that stuff is going to be extreme.

Just a thought......
Old 06-04-2007, 08:11 AM
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Default Re: M260 Install completed on Ali boat

The poly plate is 10mm thick. I had the same thought about the fill bungs also and didnt feel confident so we tapped out the fill holes to 1/4 BSP. The hole size is perfect for the tap size and used thread sealant on the threads of the brass plugs.
Old 06-04-2007, 07:10 PM
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Default Re: M260 Install completed on Ali boat

That makes sense, but if you went to all of that trouble, why have the poly plate at all? 10mm is only about 1/4".

You could probably make the cover completely watertight and have the bottom of the ducer exposed to the water. Water pressure will likely crack that poly pretty quickly. It isn't meant to be used like that.

I'd either glass it in with a good 1/2 to 3/4 inches of fiberglass or make sure the top will hold the full load. It's probably not a bad idea to launch it without the poly and make sure it doesn't leak. Because sooner or later, you will be in that exact situation.

Just friendly advice, not meant as crit.
Old 06-07-2007, 11:11 AM
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Default Re: M260 Install completed on Ali boat

Wow, that looks nice. I've never seen it done like that before. Has the installer done many like that in the past?
Old 06-07-2007, 08:39 PM
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Default Re: M260 Install completed on Ali boat

Nice ride!
Old 06-08-2007, 11:45 PM
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Default Re: M260 Install completed on Ali boat

Yes pimpbot, they do all their wetboxes for ali boat like this. They've been doing them for many years and have had no problems with any. I wish I had done this on my other boats instead of transom mount. I had to go this way due to running twin o/boards and can say it works like a champ. For those that are worried about it leaking they can get the builder to build another sealed compartment around the wetbox with a lid flush to the deck.
Old 06-08-2007, 11:53 PM
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Default Re: M260 Install completed on Ali boat

Thanks for good advice gerg. No worries mate about about crit as there is always a way to improve on everything as youve pointed out. I will see how this does go overtime though and we did test the box out with filler holes plugged and had no leaks. I hope with this idea anyway that we can improve on it. If I have any probs this will be the first site I will post to. Thank you all

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