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Originally Posted by Blue_Heron
As some of the others have suggested, you can look around here and find several transom rebuilds. But some restorations are better than others. You are safe if you follow just about anything strick has done. He's got plenty of experience and his boats are done right.
You should also consider reading up on the subject. I highly recommend Elements of Boat Strength by Dave Gerr
http://www.amazon.com/The-Elements-B...7213548&sr=1-1
His chapter on fiberglass explains the different types of resins and glass fabrics and other reinforcements available today and makes it a little easier to make intelligent choices. I think you'll find his book is money well spent.
All that being said, your inner and outer laminates should match the original layup. That would be about 3/16" to 1/4" thick. You can use alternating layers of 1.5 oz mat and 24 oz. roving, or you can use the newer, stronger biaxial stitchmat fabrics. Four or five layers of 1808 should do the trick. Gerr's book will tell you how many layers it takes to get the laminate thickness you need.
You can glue your plywood together with resin thickened with cabosil to the consistency of peanut butter. I like to use a notched trowel to apply it. On something that large, I'd use a 1/4" notched trowel.
Dave |
This kind of info is what cuts the chafe from the stalk.