Gus Posted April 6, 2017 Share Posted April 6, 2017 Bit surprised to find the prop in this condition, its 2 years old. I don't remember seeing all those little holes last year when we took it out. Anyone any experience with that? Is this normal? Link to comment Share on other sites More sharing options...
Baller PatM Posted April 6, 2017 Baller Share Posted April 6, 2017 What's in your water? Link to comment Share on other sites More sharing options...
Baller oldjeep Posted April 6, 2017 Baller Share Posted April 6, 2017 Do you moor that boat in the water? Looks like the damage you get from stray current (electrolysis) when you have no anodes. Link to comment Share on other sites More sharing options...
Gus Posted April 6, 2017 Author Share Posted April 6, 2017 It has been out of the water for four months, for the winter break. In some of the holes, more caverns, there was some very clear lightgreen copper rust. Link to comment Share on other sites More sharing options...
Baller oldjeep Posted April 6, 2017 Baller Share Posted April 6, 2017 Sure, but are you sure those holes were not there when you put it away? The hull clearly didn't get cleaned Link to comment Share on other sites More sharing options...
Baller_ RichardDoane Posted April 6, 2017 Baller_ Share Posted April 6, 2017 From the condition of the bottom, I'd guess your boat spends a lot of time in the water where electrolysis has taken a toll. I'd bolt a couple of zincs to the shaft support strut or swimstep brackets to help protect your next prop. Dis-similar metals in solution are the culprit. Link to comment Share on other sites More sharing options...
Baller bko Posted April 6, 2017 Baller Share Posted April 6, 2017 Have you used a power-tool like a disc-grinder or similar close to the boat and the sparks have hit the prop? Link to comment Share on other sites More sharing options...
Baller oldjeep Posted April 6, 2017 Baller Share Posted April 6, 2017 One more bit of good news. Zoom in, your strut bushing has melted. Did someone run it in gear dry right before it was pit away? Link to comment Share on other sites More sharing options...
Baller liquid d Posted April 7, 2017 Baller Share Posted April 7, 2017 With holes in your prop like that does it make the turbulence behind the boat better? You might have something there! Link to comment Share on other sites More sharing options...
Gus Posted April 7, 2017 Author Share Posted April 7, 2017 So something like this needed.. I always thought ski nautiques in sweet water didn't require any anodes. Link to comment Share on other sites More sharing options...
Baller Orlando76 Posted April 7, 2017 Baller Share Posted April 7, 2017 It does look like it could be electrolysis but not quite like I'm used to seeing. Yes a zinc anode like pictured above will help. My main question is what's causing the electrolysis? Could be exposed electric in the boat or in this case more likely at the dock. Link to comment Share on other sites More sharing options...
Gus Posted April 9, 2017 Author Share Posted April 9, 2017 I have a sun powered ventilator, installed in the cover - very effective against mould and always a fresh smell in the boat. Its plastic, and could produce quite some static on sunny days. But I'd expect that to dissipate when it hits the water surface.. Link to comment Share on other sites More sharing options...
Baller riplash Posted April 10, 2017 Baller Share Posted April 10, 2017 Hey Gus, You should make sure that the negative terminal of the sun powered ventilator power source and/or battery is grounded to the negative terminal or engine block of the boat. That should help reduce that static, and that static is probably adding to the electrolysis problem. -Rip Link to comment Share on other sites More sharing options...
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