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In Reply to: Re: longshaft/shortshaft (newbie) posted by Thom V on March 26, 2005 at 10:01:46:
Your long/short question: Ideally, the cavitation plate on the lower unit should be just below (an inch or so) the lowest point on the transome. Lower than this increases the drag and efficiency of the outboard. The long shaft engines were intended for sail boat auxillary use. Sailing in a following sea, the engine is easilly pulled clear of the water by the bow-down surge so the extra length helped to prevent damage to the engine and to keep the prop in the water.
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