Grady White Bimini 220 Transom Replacement

[garrymny]

 

I'm replacing Transom. 1983 boat. All the plywood is soaked and much of it is rotten. I cut away the inside bucket. A good tutorial on this same boat can be found here: http://bateau2.com/howto/transom_repair/index.php     I am following the same process.

 

I also did another complete transom and floor in another boat that I posted to this forum too. 

 

For this Grady White, I  Ripped out all the old fiberglass and plywood. Made new plywood using 3/4 marine grade. Drilled all holes oversized and filled resin to prevent future rot. Pictures will be posted in comments because the website did not allow me t post pictures from phone on this title page. Check back because I will be posting pictures as I go.

 

 

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Edited May 14, 2019 by garrymny
fixed model number in title.

[garrymny]

I tried to load pictures. It said failed. Wrong forum ID.

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[garrymny]

I guess I will have to load pictures by replying to my own post. Here are some pictures. I had to build a frame to allow hoisting the engine. You can see the cuts in the inside bucket. You can see the rotted plywood being removed

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[garrymny]

Here you see the right side cleaned out. I then had to remove the secondary floor so I could expose the transom all the way to the floor. The blue tint to the pictures is because I had to put a Huge tarp over everything with our terrible weather.

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[garrymny]

In the last reply you can see the plywood made and dry fit. Here you see how I made a template using strips of 1/4 inch luan and a hot glue gun. Unfortunately I had to end up making each layer of plywood out of two pieces. A single piece could not be placed in there. So it is 3 layers of 3/4 inch plywood. Each layer consists of two pieces, a left and right. I staggered the cuts.

 

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[garrymny]

After dry fitting all 3 layers I clamped them in dry. Then I drilled pilot holes through the scupper holes, bilge drain, out board mount, kicker bracket, and tow connectors. Then I removed the plywood, over size drilled every hole, applied a zip lock bag and quarter inch piece of luan to act as a backer. Then, I filled every hole with resin. This way even when the holes leak, the water will not contact plywood, only resin.

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[Decoy Hound]

Wow!! That is going to look really good when your done! Now you’ll know what you have, probably better than it was from the factory!

[whaler1]

Great job, what a project.


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[garrymny]

Thanks. I suspected it was bad when I got the boat 2 years ago. Figured I better get r done.

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[garrymny]

Geeze with all the fishing reports I really need to get this done

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[garrymny]

Today, I glued the plywood in and clamped it. I also put 10 bolts through to squeeze it together. I will never use bolts again. It was a big pain getting them through all three layers of plywood.

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[garrymny]

Before I glued the plywood to the transom, I cut out the 1708 fiberglass to shape. Two layers. One extends 6 inches past the edges. The second extends 9 inches past. I also cut out 45/45 biaxial clothe to tab in the edges of the plywood, before laying on the 1708.

[garrymny]

Productive couple of days. I got the Transom glassed in. Next day I made the floor stringers and floor pieces I had cut out. Today, I glassed in the floor stringers and floor. The Lynn Marie is now structurally sound once again!.

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[garrymny]

Finally done. Here are some pictures of the inside pieces reattached. I used plywood strips and covered the plywood in fiberglass to reattach them. I used countersunk screws to secure it while it hardened. Then, I used fiberglass Bondo to cover the cut lines. I just have to install the floor panel and the rear door/floor. Thank God this project that started may 8 and took until May 27 is Done. I'm guessing the cost was between 1500- 2000. But I did add a few improvements: third battery, new wires, new fuse panel.

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[Decoy Hound]

That looks awesome Garry!! Now get out and chase those salmon!!!

[RobertHan]

Planned transom design and installation can even last beyond a decade as long as you cover it after each use. It may last shorter when not covered while fishing or exposed during monsoons.