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Cavitation plate 2 inches below transom, worth raising?
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<blockquote data-quote="Boat2fast" data-source="post: 361860" data-attributes="member: 13358"><p>Thank you for sharing your experience. All your time/trouble/expense may not be completely wasted if it saves others from bad result. </p><p> My experience with similar setups is always to try a 3/4in shim to elevate the engine. If it results in a benefit(usually), then keep it. If it hurts(occasionally) then remove it and there is no loss.</p><p> I have a real fast SeaNymph 14R/Johnson 30; the shim hurt. Prop ventilated continually. Without the shim it was fine.</p><p> Your 29mph was a great result. It's not often the boats go that well. Yours rode nice and straight too, judging by the video.</p><p> The picture is a 1969 Evinrude Sportster 25 on a 10ft SeaNymph. Boat went best with the shim and a 2blade brass prop. 34mph/gps</p></blockquote><p></p>
[QUOTE="Boat2fast, post: 361860, member: 13358"] Thank you for sharing your experience. All your time/trouble/expense may not be completely wasted if it saves others from bad result. My experience with similar setups is always to try a 3/4in shim to elevate the engine. If it results in a benefit(usually), then keep it. If it hurts(occasionally) then remove it and there is no loss. I have a real fast SeaNymph 14R/Johnson 30; the shim hurt. Prop ventilated continually. Without the shim it was fine. Your 29mph was a great result. It's not often the boats go that well. Yours rode nice and straight too, judging by the video. The picture is a 1969 Evinrude Sportster 25 on a 10ft SeaNymph. Boat went best with the shim and a 2blade brass prop. 34mph/gps [/QUOTE]
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Cavitation plate 2 inches below transom, worth raising?
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