Is Epoxy better than Goop for transducer mount? - Kayak Fishing Adventures on Big Water’s Edge

Billy V · 03-02-2008, 11:57 AM

Heres a couple of pics of the transducer Gooped down. I located it between the sailing mast, and the drive well (Hobie Adventure). I figure this area would be fairly stiff. I roughened up the surface with 80 grit aluminum oxide paper, then cleaned it with alcohol.

I was careful to flow the Goop so as not to create any bubbles. Then I placed the puck down in one motion from left to right. I leveled the boat with a pool noodle wedge, and it has stayed put for 3 hours so far.

*Note the "drive well strengthening kit" to the rear of the puck. Its a Hobie thing.

I'll know more next week.

nmbrinkman · 03-02-2008, 12:53 PM

Is that "marine goop" or regular "goop"?

Billy V · 03-02-2008, 03:46 PM

Quote:

Originally Posted by nmbrinkman

Is that "marine goop" or regular "goop"?

Marine Goop.

aguachico · 03-02-2008, 04:28 PM

Marine goop has UV inhibitors.

DOn't use GOOP.

3M 4200 is the the way to go other than mounting outside the yak.

After using goop, 4200, water bags and everyother method I can think of, the transducer should be mounted outside a yak for optimal clarity.

bluesquids · 03-03-2008, 11:06 AM

[quote=aguachico;21494]Marine goop has UV inhibitors.

quote]
Is UV inhibitor a bad thing?
I thought 5200 was standard for thru hull applications.
It seems very flexible. Have not tried 4200 yet because it says
it's less adherent than 5200.
Heard that the kaya tank installs are using Goop now.
I think prep is most important anyway you decide to go.

dgax65 · 03-03-2008, 12:46 PM

[quote=bluesquids;21527]

Quote:

Originally Posted by aguachico

Marine goop has UV inhibitors.

quote]
Is UV inhibitor a bad thing?
I thought 5200 was standard for thru hull applications.
It seems very flexible. Have not tried 4200 yet because it says
it's less adherent than 5200.
Heard that the kaya tank installs are using Goop now.
I think prep is most important anyway you decide to go.

I'll agree with that. I've used 3M 5200 (regular and quick cure), Marine Goop and Sikaflex. While I have had mixed results with the sonar performance, all have adhered well to the hull. The key is to rough up the hull first. I really had to struggle to get a couple of the transducers off.

Marine Goop works well but you have to take precautions to prevent bubbles from forming under the transducer. Have everything ready to go before you apply the Goop. Level the hull so the transducer won't move. The key is to put the transducer down in one smooth motion. You don't want to disturb it once it is in place. Every movement seems to create more bubbles.

I've found that a thin layer works best. I just put down enough Goop to seat the entire transducer surface. After it cures for a while I go back and put a little more Goop down. When I apply the second layer I put Goop on the top edge of the transducer and let it run down the sides to contact the first layer. I think this holds the transducer in place better. Some people rough the surface of the transducer for better adhesion. I would rather cover the top than rough the transducer face.

aguachico · 03-03-2008, 01:39 PM

[quote=bluesquids;21527]

Quote:

Originally Posted by aguachico

Marine goop has UV inhibitors.

quote]
Is UV inhibitor a bad thing?
I thought 5200 was standard for thru hull applications.
It seems very flexible. Have not tried 4200 yet because it says
it's less adherent than 5200.
Heard that the kaya tank installs are using Goop now.
I think prep is most important anyway you decide to go.

UV not sure if good or bad - can't hurt I guess.
5200 is the standard for thru hull, this isn't thru hull.

4200 is a personal preference for tranducers. I still use goop around rod holders and my old kayaktank.

bluesquids · 03-04-2008, 11:24 AM

[quote=aguachico;21536]

Quote:

Originally Posted by bluesquids

this isn't thru hull.

I was just thinking about general adhesion properties.
I just finished some reinforcements to the inside of a hull.
After the plastic weld to a crack I used goop on some strap webbing like a band aide. Gonna glue another plastic stint over that.
I went with goop mostly because it's seems not as messy when poking around inside the hull.
Tip- if you need to do a small reinforcement like a rivet or something, in a hard to reach area. Put a glob of goop on a square of sandwich baggie plastic and stick it where you want. It wont run all over the place and you just slap it up...no mess.

Siebler · 03-03-2008, 08:51 PM

[quote=bluesquids;21527]

Quote:

Originally Posted by aguachico

Marine goop has UV inhibitors.

quote]

Heard that the kaya tank installs are using Goop now.

If you have your tank installed it will be done with Goop. This is the same at any OEX or AYS as I do all the installs. If you order a tank and install yourself it will come with 5200 unless you specifically tell me you want the goop.

Habu · 03-05-2008, 03:43 PM

Tried goop but while curing in 75 deg temp filled with bubbles signal quality was lousy. went with ace's 2-part epoxy been happy ever since (4 yrs) Have also heard of instead of water too use vaseline to temp mount transducer.

deeberdave · 07-11-2008, 11:35 AM

I went for the foam block shaped for the transducer,gooped to the inside of the hull press in transducer just add two tablespoons of water and your in business,no fuss no muss! This works great so far and is clean and easy to remove if necessary.

sbsyncro · 07-14-2008, 08:32 PM

I've been using a blob of vaseline for about a year now with no problems. I had to re-do it once because something got loose in the hull and knocked my transducer loose.

I wedged a section of pool noodle above the xducer to hold it in place. Not perfect, but I can't make up my mind where to mount it permanently. I have the slow-cure epoxy all ready to go and everything... :-)

03-03-2008, 11:06 AM	#5
bluesquids Senior Member Join Date: Mar 2005 Location: Jamul, CA Posts: 243	[quote=aguachico;21494]Marine goop has UV inhibitors. quote] Is UV inhibitor a bad thing? I thought 5200 was standard for thru hull applications. It seems very flexible. Have not tried 4200 yet because it says it's less adherent than 5200. Heard that the kaya tank installs are using Goop now. I think prep is most important anyway you decide to go. __________________ Thanks, bluesquids

03-02-2008, 11:57 AM	#1
Billy V Senior Member Join Date: Sep 2006 Location: Bay Ho Posts: 1,382	Heres a couple of pics of the transducer Gooped down. I located it between the sailing mast, and the drive well (Hobie Adventure). I figure this area would be fairly stiff. I roughened up the surface with 80 grit aluminum oxide paper, then cleaned it with alcohol. I was careful to flow the Goop so as not to create any bubbles. Then I placed the puck down in one motion from left to right. I leveled the boat with a pool noodle wedge, and it has stayed put for 3 hours so far. *Note the "drive well strengthening kit" to the rear of the puck. Its a Hobie thing. I'll know more next week.

03-02-2008, 12:53 PM	#2
nmbrinkman Work Sucks! Join Date: Mar 2006 Location: San Diego Posts: 559	Is that "marine goop" or regular "goop"?

03-02-2008, 04:28 PM	#4
aguachico Senior Member Join Date: Mar 2005 Posts: 719	Marine goop has UV inhibitors. DOn't use GOOP. 3M 4200 is the the way to go other than mounting outside the yak. After using goop, 4200, water bags and everyother method I can think of, the transducer should be mounted outside a yak for optimal clarity.

03-05-2008, 03:43 PM	#10
Habu Member Join Date: Mar 2005 Location: Cerritos Posts: 31	Tried goop but while curing in 75 deg temp filled with bubbles signal quality was lousy. went with ace's 2-part epoxy been happy ever since (4 yrs) Have also heard of instead of water too use vaseline to temp mount transducer.

07-11-2008, 11:35 AM	#11
deeberdave Member Join Date: May 2008 Location: CARLSBAD Posts: 34	I went for the foam block shaped for the transducer,gooped to the inside of the hull press in transducer just add two tablespoons of water and your in business,no fuss no muss! This works great so far and is clean and easy to remove if necessary.

07-14-2008, 08:32 PM	#12
sbsyncro Member Join Date: Oct 2007 Location: Santa Barbara, CA Posts: 80	I've been using a blob of vaseline for about a year now with no problems. I had to re-do it once because something got loose in the hull and knocked my transducer loose. I wedged a section of pool noodle above the xducer to hold it in place. Not perfect, but I can't make up my mind where to mount it permanently. I have the slow-cure epoxy all ready to go and everything... :-)