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<blockquote data-quote="C&amp;amp;K" data-source="post: 483581" data-attributes="member: 30707"><p>Jackplates are a simple problem of mathematical vectors and lever forces. The thrust is developed at the prop. But the force is transferred to the boat at the point of attachment of the outboard. The longer that lever, the higher the twisting forces are on the transom. While you can get by with this as shown in your photos with 15 and 25hp outboards, try it with a 150, 200 or 250 on a bass boat. You'll break the transom.</p></blockquote><p></p>
[QUOTE="C&K, post: 483581, member: 30707"] Jackplates are a simple problem of mathematical vectors and lever forces. The thrust is developed at the prop. But the force is transferred to the boat at the point of attachment of the outboard. The longer that lever, the higher the twisting forces are on the transom. While you can get by with this as shown in your photos with 15 and 25hp outboards, try it with a 150, 200 or 250 on a bass boat. You'll break the transom. [/QUOTE]
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