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Jon and V Boat Conversions & Modifications
Another Jet Ski John Boat (New pics and video 01-18-2012)
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<blockquote data-quote="PSG-1" data-source="post: 232327" data-attributes="member: 6937"><p>Yes, toploader grates can be weed magnets, as they have not one, but two 'blades' that scoop water (and everything else) into the pump. Also, instead of having 4 or even 5 tines like a regular grate, it's only 2 thick tines, which support the 2 blades that scoop the water in. The front blade is angled more steeply, to load the water to the top radius of the impeller duct, while the rear blade is less steep, which feeds the water into the remainder of the pump in the conventional manner.</p><p></p><p>I had cavitation with my boat, and a toploader grate DID fix the problem. However, I had too many issues with ingesting weeds and fouling my pump, so I had to decide whether I wanted to eliminate cavitation, or eliminate fouling my impeller. In the end, I went back to a conventional grate, which was modified to hinge on the front end, and is attached on the rear with a push-pull cable, for an easy method of clearing weeds. Sea-Doo uses a similar design on their speeedster jetboats, and that's basically what I used as a blueprint for mine. In fact, I even used a few Sea-Doo parts to do it.</p></blockquote><p></p>
[QUOTE="PSG-1, post: 232327, member: 6937"] Yes, toploader grates can be weed magnets, as they have not one, but two 'blades' that scoop water (and everything else) into the pump. Also, instead of having 4 or even 5 tines like a regular grate, it's only 2 thick tines, which support the 2 blades that scoop the water in. The front blade is angled more steeply, to load the water to the top radius of the impeller duct, while the rear blade is less steep, which feeds the water into the remainder of the pump in the conventional manner. I had cavitation with my boat, and a toploader grate DID fix the problem. However, I had too many issues with ingesting weeds and fouling my pump, so I had to decide whether I wanted to eliminate cavitation, or eliminate fouling my impeller. In the end, I went back to a conventional grate, which was modified to hinge on the front end, and is attached on the rear with a push-pull cable, for an easy method of clearing weeds. Sea-Doo uses a similar design on their speeedster jetboats, and that's basically what I used as a blueprint for mine. In fact, I even used a few Sea-Doo parts to do it. [/QUOTE]
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Jon and V Boat Conversions & Modifications
Another Jet Ski John Boat (New pics and video 01-18-2012)
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