Transom Strength

[sunkShips]

I am in the process of rebuilding my Transom on my 16' Bass Boat. I tore out the old rotten transom and am now ready to put in a new one. I am planning on using Ply wrapped in Fiberglass, completely sealed. Then fiberglass it into place.

My concern is will the motor when remounted just rip the transom right off?

I will post some pics tomorrow, but basically the total back end of the boat was rotten. From the deck up from the left side of the boat to the right.

The floor and stringers are in great condition, only the transom was rotten. I was able to leave the Skin on the back of the boat, but there is little or no support to mount the new transom to, so I think once I put the new transom in and fiberglass it to the skin and put it all back together again that the motor will rip it off.

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You will notice the expanding foam in the pics. I used that to fill some holes in the plywood edge that was left. I piped in the foam then today leveled it off and fiberglassed over it. I wanted to have a tight smooth edge to sit the new ply on.

My bigest concern/question is : with no angle suport or support on the sides how will the motor not just rip off the transom? Is fiberglass that string to hold from the bottom and edges of the boat?

http://www.jbmoyer.net/boat/img_first.jpg
http://www.jbmoyer.net/boat/img_second.jpg
http://www.jbmoyer.net/boat/img_final.jpg
http://www.jbmoyer.net/boat/img_last.jpg
http://www.jbmoyer.net/boat/img_crack.jpg

I was thinking of putting some kind of Angle Supports from the floor to the transom, but ??????

Even if I was just replacing 2 feet of the transom, how will it hold and not rip off? I dont understand.....

What are your thoughts.?

[jimslade]

Use a layer of mat between the outer skin and the wood than 2 layers of 1810 glass to glass the wood to the sides and hull. Leave 1/4 inch of space around the hull and sides. Wood should not touch,it will set up a local stress point.

[sunkShips]

So glass that is connected to the transom adn to the floor and glass that is connected to teh transom and each side is string enough on its own to hold the transom in place?

Do I need some sort of angle supports? from teh transom to the floor or transom to the stringers?

[mtnrat]

You are replacing the whole transom, correct?

[sunkShips]

I wasent planing on it, but after some reading I have done. I am going to cut it all out from the left side of the boat to the right. From the top to the bottom.

[mtnrat]

Good move. The transom needs to be one piece. Takes about the same total amount of work anyway.

[jimslade]

outboards need knee supports. one will work. glassed in well