I have a 15hp long shaft that won't run at top speed, after about 50% throttle it seems to cavitate. . . though it could also be described as drive slippage. the motor shaft is about 3 inches too long for the transom in my very old aluminum skiff. Could the slippage I feel be related to the shaft being too long?
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Why won't my 15HP long shaft bring my aluminum boat to plane?
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