Wednesday, July 30, 2008

40mm across, 25mm deep

While I was on the dock stretching, our perfectly-balanced OJ prop was essentially destroyed by the 3-ball magnet. The leading edge of one blade lost 2-3 mm at the tip; but the trailing edge lost perhaps a full square inch of surface-area in a gouge running 40mm across and 25mm deep. To repair this prop and restore balance requires removing an equal mass from the other three blades; an action that would irrevocably alter the prop's hydrodynamics. No way for our vintage `97 Nautique, otherwise in excellent condition with less than 500 hours. New OEM OJ prop on the way.
Trailing Edge Damage

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