I currently have 1/8 and the force applied by the stern will be 2000 pounds. The plate would be 25 x 32 inches and would be supported by frame or weld. Only concern is that i don't want it to flex at all. So i've though of 1/2 in 5000 series.
"Ed Edelenbos" wrote in message ...
I would think that it depends on several factors... width and height, where any additional braces would be... it isn't just a simple answer.

Ed

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"André Langevin" wrote in message ...
mmmm seems nobody is building in aluminum...

"André Langevin" wrote in message ...
Hi, does someone knows the thickness required for an aluminum transom to support the weight and pushes of a 200 HP engine without deforming ? I guessed 3/8" but i'm no engineer.

Any advice would be truly appreciated.