How to protect transom plywood?

[crosbyman]

When I redid mine I used 2 layers of 7/8 inch 8 ply porch plywood coated with 2 coats of exterior latex paint

never had problems

Joining AOMCI has priviledges 🙂

[amuller]

Interesting piece on thinning epoxy:

http://www.westsystem.com/ss/thinning-w … tem-epoxy/

[kees]

.
I don’t understand that
why using the cheapest crap to mount a collectable motor on your boat
I use a piece of oak, good and solid
or if not available, another hardwood
.

[amuller]

So I used some 3/4" plywood made for concrete formwork. It seems of reasonable quality, has seven plies, and a smooth paper on one side. (Dumpster diving material from a nearby bridge project.) Used it on both sides of the aluminum, then had to add more thickness on the outside because of the lip on the transom. So I ended up with about 2 1/16" total thickness. This seems OK for all the OMC motors I checked, and even a Clinton. But it’s not OK for my Elgin/West Bends, limited to about 2". Will need to plane some thickness off the inboard pad, or make a new one. I could have planned this job better.

[Author]

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