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Jon and V Boat Conversions & Modifications
12' 1976 Harber/Sears V-hull conversion
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<blockquote data-quote="waterant" data-source="post: 508817" data-attributes="member: 34810"><p>I calculated the boyancy of foam I have inside the boat now and it's ~511 pounds for 1.5x of 4x8' sheets of 2" rigid foam. </p><p></p><p>* From another thread I found:</p><p>4x8' sheets of 2" foam is 5.33 cubic feet.</p><p>Seawater weighs ~64 pounds per cubic foot.</p><p>So sheet displaces ~5.33x64= 341 pounds</p><p></p><p>Current total weight is 318lb for the boat + 40lb battery + 110lb for the outboard = 468 lb</p><p></p><p>Everything weights less in the water, aluminum weights in the water 0.68 or something like that. So, 511lb of flotation to keep 318lb from sinking. Seems like enough.</p><p></p><p>I still want to add side floats for stability, similar to boat collar from Australia</p><p>[URL unfurl="true"]https://boatcollar.com.au/product/buy-max-collar-rooftopper-trailer/[/URL]</p><p>Super expensive to ship from Australia.</p><p></p><p>I'll diy them. Already found a supplier for the same material.</p><p>I'll open a new thread about this project because I couldn't find anyone describing this except some ugly floats on sticks done from insulation foam from home depot.</p><p>There must be a better way...</p></blockquote><p></p>
[QUOTE="waterant, post: 508817, member: 34810"] I calculated the boyancy of foam I have inside the boat now and it's ~511 pounds for 1.5x of 4x8' sheets of 2" rigid foam. * From another thread I found: 4x8' sheets of 2" foam is 5.33 cubic feet. Seawater weighs ~64 pounds per cubic foot. So sheet displaces ~5.33x64= 341 pounds Current total weight is 318lb for the boat + 40lb battery + 110lb for the outboard = 468 lb Everything weights less in the water, aluminum weights in the water 0.68 or something like that. So, 511lb of flotation to keep 318lb from sinking. Seems like enough. I still want to add side floats for stability, similar to boat collar from Australia [URL unfurl="true"]https://boatcollar.com.au/product/buy-max-collar-rooftopper-trailer/[/URL] Super expensive to ship from Australia. I'll diy them. Already found a supplier for the same material. I'll open a new thread about this project because I couldn't find anyone describing this except some ugly floats on sticks done from insulation foam from home depot. There must be a better way... [/QUOTE]
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Jon and V Boat Conversions & Modifications
12' 1976 Harber/Sears V-hull conversion
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