My Turn To Take On A Transom

[UrbanAngler]

Hello Everybody!!

I haven't been active on this site, but i have been lurking ever since I picked up a 1974 20SF 5 years ago.

The first winter I had it, I rewired the entire boat, as well as new electronics, pumps, lights, etc.. Picked up a rebuilt 96' evinrude 115 , and have been enjoying the boat ever since.

Over the past few winters i have re-cored a few hatches, built a leaningpost/livewell, as well as cushions and other minor upgrades.

As it sits now, This winter I'm planning to remove the motor, rebuild the transom up to 25", repower with something new, replace the 26 gal poly gas tank, new steering, trim tabs, guages, and anything else involved with my upgrades

I figured I'd start a thread to ask all my questions, as well as get opinions on what I'm doing right and wrong.

Wish me luck!

Here's a pic of the my boat "Daze Off"

[caper]

Nice looking boat. Have fun with your transom.

[db3155]

nice where are you on the project?

[UrbanAngler]

I've been chopping away at this for the past few weeks.

So far I have the outter skin removed and all of the old core removed. Getting the old core out of the edges and corners was def a pain in the ass, but I kept at it an got damn near 100% of it out.

Just got all my materials in the mail and next step is to cut the coosa to shape and get all my fiberglass "mise en place" ready. I plan on doing the lay up all in one whack.

I plan to follow this lay up starting from the inside:

Full piece entire shape of transom 1 1/2 oz mat.
3/4" thick coosa, cut into 4 pieces to fit inside transom
Full piece 1 1/2 oz mat
5/8" thick coosa cut into 4 pieces, at least 6" overlap from other coosa pieces.
Old skin on top of it all, clamped down really good.

I'm going to use combination of neat epoxy and thickened epoxy, depending on the layer. Prob thickened for the core and neat for the mat layers.

It's gonna be tough to get the core to fit absolutely snug and tight with the corners and edges of the transom, because of the original construction. There all types of bumps and what not preventing the new core from sliding all the way to the edge. So the plan is to fill the edges with thickened resin, possibly with loose pieces of pulled apart mat, prior to fitting the pieces of core in. There will be about 1/2" space along all the edges of this thickened resin concoction.


Does this sound good?

[DonV]

Your floor is way too nice!!!

[linesider36]

When FAS redid my transom on a '79 23' I cut away the outer skin like you did but FAS cut the cap on either side of the motor well so he could slide the sandwished marine plywood and glass into the hull as one piece. It doesn't look like you'd have to cut much to do the same. Also save your hull Number!!! Just a thought. Good luck with it .

[Schniz]

I'm doing the same thing to my 1978 20'. Got the outer skin off and scraped the old plywood out from where we cut. Got any advice on how to get the rest out around the edges? Yours looks really good...
Thanks

[linesider36]

Chisels, drills, claw hammer, pliers, electric chain saw, patients , and beer, lots of beer.

[Schniz]

That's about what I figured, but had to ask in case you found a shortcut! Oh well, here we go....
Thanks

[Outrageous]

Originally Posted by linesider36

When FAS redid my transom on a '79 23' I cut away the outer skin like you did but FAS cut the cap on either side of the motor well so he could slide the sandwished marine plywood and glass into the hull as one piece. It doesn't look like you'd have to cut much to do the same. Also save your hull Number!!! Just a thought. Good luck with it .

Linesider is right! As close to doing it RIGHT as it gets for outboard power.