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Home Made Jet Jon ideas
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<blockquote data-quote="catmansteve" data-source="post: 277428" data-attributes="member: 8490"><p>I believe the OP is talking of mounting the entire jetski hull, minus the front to the OUTSIDE of the transom so that no parts of the engine/pump are inside the hull of his boat at all. </p><p></p><p>I am by no means an expert on the subject, having never built an IB jet myself, but I really don't think the idea would work well at all. I can see the positive side would be limited loss of interior space and minimal modification to the boat hull. However, the glaring weakness I see is the boat would only have the narrow ski hull as a planing surface, and the weight of the engine and pump would be levered several feet rearward. My guess is the boat would draft really deep at the rear, and I imagine it would be very difficult to plane, if it would plane at all.</p><p></p><p>About the only way around this problem I see is to extend the bottom of the boat to the rear of the ski hull, and if you're going to go to all that trouble you may as well just find a bigger boat and mount the engine inside the hull.</p><p></p><p>Again, I'm no expert and not trying to discourage, just trying to be helpful and point out possible problems</p></blockquote><p></p>
[QUOTE="catmansteve, post: 277428, member: 8490"] I believe the OP is talking of mounting the entire jetski hull, minus the front to the OUTSIDE of the transom so that no parts of the engine/pump are inside the hull of his boat at all. I am by no means an expert on the subject, having never built an IB jet myself, but I really don't think the idea would work well at all. I can see the positive side would be limited loss of interior space and minimal modification to the boat hull. However, the glaring weakness I see is the boat would only have the narrow ski hull as a planing surface, and the weight of the engine and pump would be levered several feet rearward. My guess is the boat would draft really deep at the rear, and I imagine it would be very difficult to plane, if it would plane at all. About the only way around this problem I see is to extend the bottom of the boat to the rear of the ski hull, and if you're going to go to all that trouble you may as well just find a bigger boat and mount the engine inside the hull. Again, I'm no expert and not trying to discourage, just trying to be helpful and point out possible problems [/QUOTE]
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