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Jet Boats
General Jet Boat Discussions
Got my Sportjet Tunnel project boat working, then sunk it..
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<blockquote data-quote="PSG-1" data-source="post: 285891" data-attributes="member: 6937"><p>Yeah, I can see why now! Not only are the hulls tougher, but so are the jet pumps and impellers. </p><p></p><p>The aqua jet pump has an impeller with blades that are like 10X thicker than the edges of my Yamaha XL1200 impeller. Take the XL1200 through some gravel, not only is it going to chew the impeller all to hell, but the duct of the XL1200 is a very thin casting, one rock striking it equals a shattered intake duct, and a boat full of water in a very short amount of time.</p><p></p><p>Again, I just managed to get my boat insured....no way I'm going to take it through any river where there is the possibility of hitting submerged rocks. Heck, it's dangerous enough around oyster beds, or running up the ICW behind Myrtle Beach, where there are limestone/coquina ledges along the sides of the channel, or running in the swamps and coastal rivers with logs and shoals. But most of those hazards (except for the coquina ledges) will forgive a miscalculation, even with a .100" thick hull. Jagged rocks or boulders will NOT forgive a miscalculation. </p><p></p><p>So, as I said before, I'll leave the rivers above the fall lines to you guys with boats designed for that purpose. I'll stay on the rivers from the fall line to the ocean, where my boat belongs. </p><p></p><p>I guess if I want to run the rivers from the fall line inland, I need to just go ahead and build that supercharged jetboat! And utilize at least a 1/4" thick floor for my hull, and the aqua jet pump, so it's specifically designed to run in the rocks.</p></blockquote><p></p>
[QUOTE="PSG-1, post: 285891, member: 6937"] Yeah, I can see why now! Not only are the hulls tougher, but so are the jet pumps and impellers. The aqua jet pump has an impeller with blades that are like 10X thicker than the edges of my Yamaha XL1200 impeller. Take the XL1200 through some gravel, not only is it going to chew the impeller all to hell, but the duct of the XL1200 is a very thin casting, one rock striking it equals a shattered intake duct, and a boat full of water in a very short amount of time. Again, I just managed to get my boat insured....no way I'm going to take it through any river where there is the possibility of hitting submerged rocks. Heck, it's dangerous enough around oyster beds, or running up the ICW behind Myrtle Beach, where there are limestone/coquina ledges along the sides of the channel, or running in the swamps and coastal rivers with logs and shoals. But most of those hazards (except for the coquina ledges) will forgive a miscalculation, even with a .100" thick hull. Jagged rocks or boulders will NOT forgive a miscalculation. So, as I said before, I'll leave the rivers above the fall lines to you guys with boats designed for that purpose. I'll stay on the rivers from the fall line to the ocean, where my boat belongs. I guess if I want to run the rivers from the fall line inland, I need to just go ahead and build that supercharged jetboat! And utilize at least a 1/4" thick floor for my hull, and the aqua jet pump, so it's specifically designed to run in the rocks. [/QUOTE]
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General Jet Boat Discussions
Got my Sportjet Tunnel project boat working, then sunk it..
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