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Boat motor peeps?
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<blockquote data-quote="Pilchard" data-source="post: 5225372" data-attributes="member: 19427"><p>These are sacrificial anodes meant to protect metallic parts from corrosion caused by electrolysis. They are most important in saltwater as they catch corrosion that would otherwise cause serious problems.</p><p></p><p>In fact they are made of different materials depending on salt vs fresh. Zinc vs magnesium perhaps?</p><p></p><p>I'd argue that if that part of your lower unit is in the water while your on plane, you aren't running your boat for top speed due to it being improperly trimmed/jacked. They definitely do not impact speed.</p><p></p><p>On big boats you may have dozens of these anodes. On a small outboard, usually just one or two. They have nothing to do with steering or boat control. Only designed in that shape to eliminate drag at low speeds.</p></blockquote><p></p>
[QUOTE="Pilchard, post: 5225372, member: 19427"] These are sacrificial anodes meant to protect metallic parts from corrosion caused by electrolysis. They are most important in saltwater as they catch corrosion that would otherwise cause serious problems. In fact they are made of different materials depending on salt vs fresh. Zinc vs magnesium perhaps? I’d argue that if that part of your lower unit is in the water while your on plane, you aren’t running your boat for top speed due to it being improperly trimmed/jacked. They definitely do not impact speed. On big boats you may have dozens of these anodes. On a small outboard, usually just one or two. They have nothing to do with steering or boat control. Only designed in that shape to eliminate drag at low speeds. [/QUOTE]
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