Starting 23 CC rebuild
 

Hello CS forumn,
I’m starting a complete rebuild and with out getting ahead of myself first focus at hand is the transom. The hull is almost gutted , minus the stringers, skin , and top cap . I have removed old wood from transom and I’m down to the glass. I just made a template of the transom space and have made a digital file of it. I have a large CNC machine in my shop and will utilize it to create as many parts as I can. I have two 1 1/2 sheets of Coosa that I’m going to laminate together for my transom. I’m using epoxy resin for this entire project. I plan on beveling the bottoms of the coosa at 14 deg so I get I better fit with the hull and transom skin. I will be relying on lots of your success and failures on here as this is my first go. I do have a mentor who did a complete resto about 9 years ago. Thanks again for all the future help and tips . My shop is in Jax beach area if any of y’all are at all close and can offer in person tips.
Thanks again

Few more pics
 

Couple more

My brother's transom is 3 sheets of 3/4" coosa with 1708 between each one. I thought that was overkill, two 1 1/2" sheets is going to be beyond strong. Good luck!!!

Don V, three different bracket manufacturers gave me thickness requirements of 2.5 , 3 , and 3 inches. Heck if I know? I certainly also believe that it will be a bit thick. What was everyone else being told. FYI I’m going to go with a Zuke 300 29 in shaft. 32 in setback on the bracket and a dual flotation pod. Now all of that stress will be dispersed to the corners of the transom. I will need to aggressively tie them in to the hull sides and also to the 2 main stringers to disperse the forces. Of course Design and practice are most of the time at odds. Thoughts?

You're good!!! In my brother's case they cut out the transom and threw it away (dang thing was incredibly heavy with the old wood, etc) , bonded the pre-cut coosa with 1708, tabbed the inside with 1708, then two layers of 1708 across the whole inside and on the outside three layers of 1708 to tie it in to the hull, then fair and sand. Yeah, it's strong.

I believe it is overkill, BUT, you're not adding that much weight and you will NEVER worry about that transom! :)

Welcome to CSC.
Keep us posted & lets see if the initial splash will earn the "Gucci Stamp".
Then show it off at some of the Florida gatherings.

I would say greatly coveted Gucci stamp...

I sent you a pm. I’m in ormond. Come by and check out my 79 in progress if you want.
Kevin

Final transom prep finished
 

I was able to utilize a cooler night and put on the tyvex suit and got to grinding. I was able to get to the pink glass all the way around with some margins for tabbing. How much resin will I use ? I’m going to reinforce the skin from the out side with a sheet of melamine and pva it. I’m going to lay up a sheet of 1.5 chop, and 2 layers 1708. I’m going to build up the area where the notch is snd have continuous glass all tied in. 2 - 1 1/2 coosa transom will be laminated with thickened epoxy . I have 3 gallons of available mixture . Is that enough?

I think I used approx 5 gal of RAKA epoxy 2:1 just to bed the core and 6 layers of glass for inside skin. I would say at lease another two gal for additional glass before the core goes in. Also checkout CooperDOG, he is not far from you and has a bracket from Stoner Boatworks and Console from Many at Competition. Also, he is getting ready for paint on the outside. Worth meeting up, W have been bouncing ideas off each other for a better part of a year.

Keep the pics coming. I am in St Augustine and have 2-1973 23's. Both have had transom fill in and both have Armstrongs, 1 has single , 1 has dual. Both redone with plywood in the tansom 10-15 years ago before I acquired them and both have or had original deck. The single is completely gutted to the stringers with cap removed. I just acquired the dual with 2005 Yamaha 4 stroke 150's , it is in bad shape cosmetically and I plan to get it patched up and use for the next couple years while redoing the single. Ill send you a PM, like to see your work.

Hey Y’all, between Covid shut down and a torn rotator cuff I have been dead in the water. I just now am able to get back at it. One 1.5 coosa transom in, and stringers out. Adding one more sheet of coosa for transom and then will be boxing in a stringer system to today’s standards. 4.5 inch higher deck with thinner stringers for maximizing in deck storage. Hopefully this new momentum continues

Attachment 22221

Attachment 22222

I’ve been there on illness. I had kidney stones part way into my build. Get better and don’t set yourself back.

Just keep knocking out job after job on it. Eventually it will come together.
Btw like the direction you’re heading. Looking forward to seeing how it comes out.

3 3/4 in transom
 

I got the two1.5 coosa sheets laminated with lots of glass. ( epoxy entire project). The total is 3.7 in thick. I’ve mocked up the stringer with nida core and will start glassing them in soon. Then I will box in my bulk heads and rest of lateral supports for hatches.

How far do y’all place the center of the console on a bracket boat from the outside transom skin? What is the factory distance ?

Thanks for advise and help

I guess I gotta ask!! You hanging a Marine7 on that transom? :)

He will need some long bolts for that one. Should be able to handle any thing if tabbed in well though.