Is Epoxy better than Goop for transducer mount?
 

Does one offer a better picture on the fish finder ?

I'm about to glue one down, and need some expert info.:)

To be honest, I am sure some people will say the properties of "type of adhesive" works best... but I just use regular marine goop, dries overnight, and gives me a good picture...

http://i59.photobucket.com/albums/g2...s/P1010173.jpg

regular epoxy has a problem sticking to polyethylene kayaks. A little oil canning of the kayak, out pops your transducer.

/bing

Don't use anything. Just set the transducer in the hull. Splash some water around it so there is no air underneath.

All glue, epoxy, and goop methods come undone too soon.

I dont like to have water in my hull... But I did see someone made a reservoir out of foam, or pool noodle, for the puck, where you add water to it... I am lazy, I just like to get going, so I use goop.

Mine has not popped off, in my previous yellow kayak, it just took a puddy knife to pop it off. In my current green kayak, I cannot get the puck off, I was gonna move it... I am sure with more patience, it can pop off. I only mention color, because I am not sure if it makes a difference in relation to heat. I know that my green kayak gets HOT sitting on my racks in the sun, maybe the puck fused to the kayak... :eek: :D

Epoxy isnt as flexible as goop, and your kayak WILL flex. Goop seems to work well for all the units we install at AYS and the OEX stores.

That is what I would consider the best way. Just an alternative to goop and glue.

I mounted mine with Goop when I got my new yak from Cobra and it hasn't budged yet, I'm pretty happy with the picture too. So far so good.

Then Goop it is.

Thanks for the help.

I second goop. Try using Plumbers putty to build a reservoir around the transducer location.

I just left the plumbers putty after the goop cured.

I used the Plumbers Goop you can pick at any Lowes or Home Depot. Works great. You will need 48 hours for it to cure.

http://i197.photobucket.com/albums/a...p/813a3a9e.jpg

http://i197.photobucket.com/albums/a...p/4df360c4.jpg

I always have to be differant.....3M 5200 fast set think flexibilty is as important as adhesion when it comes to fastening to a flexible surface.

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.
http://im1.shutterfly.com/procserv/4...0AbMmzFizcN2Ng
http://im1.shutterfly.com/procserv/4...0AbMmzFizcN2Ng

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

you want 3m 4200 FC ... 5200 is like cement, it has no flex, 4200 is for joints, and places that will flex

owyn

Marine Goop.

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.

[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.

[quote=bluesquids;21527]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.

[quote=bluesquids;21527]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.

[quote=bluesquids;21527]
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.