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Jon and V Boat Conversions & Modifications
22"x48" Deck Lid Design Questions
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<blockquote data-quote="onthewater102" data-source="post: 436732" data-attributes="member: 13702"><p>I have a 48" x 20" lid and it just has a piece of aluminum channel made from what appears to be the same gauge sheet metal as the lid run lengthwise and welded to the underside. The channel is 1" x 3" x 1" and is spot welded along the underside. I would think you could do the same without a welder if you put 2 pieces of 1.5" angle back to back and riveted them both to the underside of the lid and to one another. You'll have built a truss out of them & wouldn't need to support them vertically in the middle. You can test it out before you build it by laying a 2x4 under the aluminum sheet 9.5" away from the 90 degree bend applied to one edge of it (assuming you're bending the edges to stiffen them) and gently apply a load to the metal. If it wants to give and flex move the 2x4 closer to the edge until you find where it needs to be to stop any flexing then move it another 1/2" closer for some wiggle room...</p></blockquote><p></p>
[QUOTE="onthewater102, post: 436732, member: 13702"] I have a 48" x 20" lid and it just has a piece of aluminum channel made from what appears to be the same gauge sheet metal as the lid run lengthwise and welded to the underside. The channel is 1" x 3" x 1" and is spot welded along the underside. I would think you could do the same without a welder if you put 2 pieces of 1.5" angle back to back and riveted them both to the underside of the lid and to one another. You'll have built a truss out of them & wouldn't need to support them vertically in the middle. You can test it out before you build it by laying a 2x4 under the aluminum sheet 9.5" away from the 90 degree bend applied to one edge of it (assuming you're bending the edges to stiffen them) and gently apply a load to the metal. If it wants to give and flex move the 2x4 closer to the edge until you find where it needs to be to stop any flexing then move it another 1/2" closer for some wiggle room... [/QUOTE]
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Jon and V Boat Conversions & Modifications
22"x48" Deck Lid Design Questions
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