Epoxy Question?

[oldtimer57]

Thats a challenge. Obviously you have to rough up the glass, but you end up with a smooth joint between the new epoxy resin and the old glass/resin mix. That is not going to be a super-strong bond unless you do something. IE a bunch of very small, shallow holes, something to give it a mechanical bond as well. The issue is the pumps are not lightweight, and they will introduce a high inertial load in rough water and you do NOT want them coming loose in the back. Id try to rig up something more mechanical, say some sort of angle bracket coming off 4 of the jack plate mounting bolts or something similar, something that wont introduce heavy metal objects bouncing around in a compartment full of batteries and wires.West Marine sells some really good epoxy, if you are sure that is the way you want to go. A good metal shop can make you something out of a 1/2″ sheet of aluminum that can be bent so that you can use the jack plate bolts by adding another nut after getting the plate drilled and bent so that it will work. Would look better too.2008 Pantera Classic2014 Mercury Pro XS 200

[2010CougarFTD]

Thanks old timer, lucky Im a machinist and have access to do what your saying. Thanks for the idea, will look into that option.

[Bushmankev]

2010CougarFTD wrote:Thanks old timer, lucky Im a machinist and have access to do what your saying. Thanks for the idea, will look into that option.Bass Pro sells a product called Stern Saver that is a nylon block you epoxy to your hull for transducer mounting. Comes with block and epoxy and works great. They have 2 different sizes available. May be exactly what youre looking for. Dont know how big the pump is but you could always use more than one if needed. Sent from my iPhone using Tapatalk

[Bass Cat Boats]

I sold a talon a month or two ago. It was mounted on my jack plate (not by me, came with boat when I bought it). It was a sturdy piece of 1/2″ aluminum bent at the right angle to hang a talon on it and make it perfectly vertical. Thats where I got the idea. I presume you could, if you made such a bracket, actually remove the four nuts on the transom bolts, remove the reinforcing aluminum stress plates, and replace with one big aluminum plate that has the mount for the pumps attached.I much prefer something mechanical like that as opposed to glue. These things take a beating when the wind gets up.2008 Pantera Classic2014 Mercury Pro XS 200

[Bass Cat Boats]

Use urethane as it will flex and should bond to both parts. Try a small patch and see if it bonds to the material you intend to mount to, it will one to the boat.

[catdude28]

Like BCB, I was thinking also some kind of urethane adhesive. I knows that the factory uses something called Euroflex on the fenders and battery trays. When I had to reconfigure my battery trays, along with the screws, I used Lepages PL premium construction adhesive. It is urethane based, waterproof, and very powerful. If you get a good bond using the PL with the nylon block on the glass, you would probably pull a layer of glass off if you tried to remove it later. However, as mentioned above, I still would prefer some kind of mechanical bond.

[Cajunhunter67]

Im more familiar with aviation products. 3M makes a structural adhesive M9309. After roughing up the fiberglass, do the same to the aluminum supports. Use low grit. 50-80 grit. We use a vacuum process during curing, but a good solid weight will do the trick. It would probably tear the bracket before coming loose. We use the same adhesive for leading edge repairs on Main rotor blades on helicopters. It aint coming off!!!

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