Rotted wood in transom

[mcqmga]

Hey Guys, While placing tiller on gudgeons on my Ds1 , I noticed wobbly and weakness. Upon further review all the gudgeon bolts were loose. Seems wood backing inside transom had rotted. I cleaned out wood and would like advice on best method of repair. Any advice appreciated.

[mcqmga]

https://photos.app.goo.gl/xHdqJT9yTpxnZvPp9

[GreenLake]

I would probably replace with marine grade plywood, but make sure that all sides are sealed with epoxy (same as the holes - the latter, you could overdrill then fill with thickened epoxy and drill that to the correct size). The idea is to prevent any water from getting at the wood, whether through cracks or via seepage in the holes.

If any wood is exposed at the back, just paint the epoxy to prevent UV damage.

That repair will then last longer than you'll own the boat.

[mcqmga]

Thanks GL!

[Brigdenj]

I just completed a repair on my DSI. Transom was rotten and water logged. It weighed 10 lbs removed! I cut the inside layer of glass around the wood core, easily removed the rotten wood which was delaminated and then ground the area clean before installing 1/2” airex foam and a layer of 1708 using epoxy. Came out great.

[GreenLake]

Welcome to the forum. And thanks for sharing your approach.