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Airmar Fairing Block

Old 03-24-2003, 06:58 AM
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Default Airmar Fairing Block

This weekend I was looking at the Airmar fairing block (AIR-033-053, I think) for my Furuno 525ST-MSD thru-hull 'ducer.

Just from looking at the block at West Marine, I am concerned that making the angled cut through the block, where the shaft of the 'ducer goes, will leave me with a sliver for mounting on the inside of the hull.

Haven't bought the block yet.

Any thought or previous experiences anyone can share?

Thanks,

Roop

Marge! Look at all this great stuff I found at the Marina. It was just sitting in some guy's boat! - Homer Simpson
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Old 03-24-2003, 08:43 AM
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Default Airmar Fairing Block

If you have some sort of extreme hull angle its possible that there won't be enough top half of the fairing block left to act to level up and become a pad for the seating of the stem nut for the transuducer. If that is the case cut the fairing block without concern for the inside of the hull, cut it to level the transducer itself on the outside of the hull. Do not lose the angle you have set on your saw though.

[Side note: I see most everyone speak about cutting the transducer with a band saw - I can not immagine why - I cut them with a table saw myself and wouldn't even try it with a band saw]

Once you have cut the block for the outside you can then cut a piece of most anyting to level up for the inside of the hull. Wood blocks come immediately to mind (be sure to seal them with at least paint, but preferably epoxy resin). I used to make my own fairing blocks by casting them in polyester (cheap) resin. I quit doing that some time ago though. They work just fine and if you need something for the inside of the hull you can make on up in sort order.

Thom

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Old 03-24-2003, 10:08 AM
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Default Airmar Fairing Block

Thanks Thom.

Common sense starting to creep in now. I vene used a little grey matter and called Aiirmar .

Picking up the block tonight.

Roop

Marge! Look at all this great stuff I found at the Marina. It was just sitting in some guy's boat! - Homer Simpson
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