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On Tue, 23 Nov 2010 17:46:50 +0700, Bruce
wrote: Out of curiosity, why chain the shaft? Are you running on one engine? And, if you are how is it working for you. I tried it and it simply dropped the speed by about half :-( On our boat we can improve fuel efficiency by about 25% running on a single engine assuming a speed of no more than about 1.1 SQRT LWL. We have Detroit 6-71 2-cycle diesels which are not efficient at low speeds. Running single engine gets operating RPMs up to a normal level. This is useful on long passages in relatively light winds and calm seas. If the wind kicks up we need more power to maintain speed and stability. |
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