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Jet Boats
General Jet Boat Discussions
The 14' Jet boat project (update 7/19/2010 Video on page 4)
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<blockquote data-quote="bassboy1" data-source="post: 149081" data-attributes="member: 55"><p>I have a major concern with the tube tie point. Tubes put a hell of a lot of force on their tow point - and much of the time impact force. </p><p></p><p>It looks to me as if the tow point only goes through the single layer of transom aluminum, with the small angle backup plate, as well as the factory tie down ring back up plate. You need to get whatever structure that tow point is on going all the way across. I see you have the slightly turned up lip on the top of the angle going to the wood, but as you can see, the outside of the radius has started cracking already. 6000 alloy aluminum doesn't bend very well at all - just cracks, like you've seen. Brake bending an extrusion like that is weakening the (already weak, as that is 6063, not 6061) piece of aluminum angle. </p><p></p><p>That tow point really needs to be attached to something SOLID, that runs the entire width of the boat. You may even want to, after putting some structure all the way across, still put a ring on either side of the transom, and use a bridle, to get the load off to the edges, as opposed to right in the middle of a span.</p></blockquote><p></p>
[QUOTE="bassboy1, post: 149081, member: 55"] I have a major concern with the tube tie point. Tubes put a hell of a lot of force on their tow point - and much of the time impact force. It looks to me as if the tow point only goes through the single layer of transom aluminum, with the small angle backup plate, as well as the factory tie down ring back up plate. You need to get whatever structure that tow point is on going all the way across. I see you have the slightly turned up lip on the top of the angle going to the wood, but as you can see, the outside of the radius has started cracking already. 6000 alloy aluminum doesn't bend very well at all - just cracks, like you've seen. Brake bending an extrusion like that is weakening the (already weak, as that is 6063, not 6061) piece of aluminum angle. That tow point really needs to be attached to something SOLID, that runs the entire width of the boat. You may even want to, after putting some structure all the way across, still put a ring on either side of the transom, and use a bridle, to get the load off to the edges, as opposed to right in the middle of a span. [/QUOTE]
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Jet Boats
General Jet Boat Discussions
The 14' Jet boat project (update 7/19/2010 Video on page 4)
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