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Old 08-30-2017, 09:51 AM   #21
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Well, how did it go?
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Old 08-30-2017, 03:24 PM   #22
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Boat gets hauled next week. I will update when done.
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Old 08-30-2017, 08:11 PM   #23
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Sometimes you can run a piece of spectra fishing line under the fairing and cut the sealant with it, put a little handle on each end of the fishing line like a wire saw. It won't get all of the sealant but it sometimes will cut almost all of it, perhaps enough to make the removal easier. A thought...
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Old 08-31-2017, 05:26 PM   #24
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Sometimes you can run a piece of spectra fishing line under the fairing and cut the sealant with it, put a little handle on each end of the fishing line like a wire saw. It won't get all of the sealant but it sometimes will cut almost all of it, perhaps enough to make the removal easier. A thought...
I hope they don't have to remove the fairing.
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Old 08-31-2017, 05:50 PM   #25
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Dave,

I've done this twice. The 1st time I installed with 5200, HUGE mistake. If you want, install the fairing with 5200, but the transducer should be bedded with polysulfide (Life-Caulk) Polysulfide cures underwater, it's not an adhesive, and it stays pliable so it makes an excellent beddding for thru-hull use. There's just no reason to use 5200 on stuff you may want to get apart as some future point.

Now, if your B744 was installed with 5200, then use this stuff to break the bond.https://www.debondcorporation.com/products/marine-formula
It's not cheap, but it WORKS. Use as directed, it will assist in breaking the bond. To remove the thru hull, I pulled the center paddle assembly and made a toggle with a piece of chain and a bolt. Use as big a chain as will fit into the hole, drop it through from the inside after removing the inside nut from the TXDCR. Then put some blocking against the hull, and use a 4x4 or suitable lever to lever the TXDCR out of the hull from the outside. The DeBond should be applied a half hour or hour ahead, use a razor knife to score the bead to allow the DeBond to enter the 5200 surface.

If you install the new TXDCR fairing with 5200 but use polysulfide on the TXDCR itself, when it comes time to replace, it'll pull right out and the fairing will remain intact.

Hope you can salvage the fairing, they are tedious to re-do.

As an aside, my luck with the speed paddles is perfect-100% they NEVER work for more than a few days.
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Old 08-31-2017, 06:34 PM   #26
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I have had 2 of these replaced and both times it was less expensive to sawzall the ducer and fairing off the boat, clean it up and install the new part. Whatever the used ducer is worth, you will spend twice that amount in labor to save it.

This is all assuming it was bedded with 5200, which is a near certainty in my area.

Good luck with yours.
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Old 09-09-2017, 09:52 PM   #27
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Well, how did it go?
SHAZAM! $170 bucks out and in! The previous install didn't use a lot of 5200. The yard boss said that won't be the case next time.Click image for larger version

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Old 09-10-2017, 03:10 AM   #28
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You lucky duck! Congratulations! I'm sure you can find something else onboard to spend the money you saved!
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Old 09-10-2017, 07:33 AM   #29
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You lucky duck! Congratulations! I'm sure you can find something else onboard to spend the money you saved!
You betcha
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Old 09-10-2017, 12:10 PM   #30
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Does not look like air airmar fairing on the outside of hull. The Transducer fits flush with fairing using the Airmar fairing. Looks good to go, though, so it worked out.
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Old 09-10-2017, 01:01 PM   #31
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Does not look like air airmar fairing on the outside of hull. The Transducer fits flush with fairing using the Airmar fairing. Looks good to go, though, so it worked out.
The fairing that came in the box looks just like it.
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Old 09-10-2017, 01:56 PM   #32
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Yup, I was wrong. Dug my new and unused one out of locker, looks identical. Perspective of pictures makes it look like original may have used 2 blocks. Old eye-ball playing tricks on me.
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