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Old 06-01-2014, 23:12   #31
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Re: MPH Motoring a 47' Sailboat?

But if nothing visible was changed the bottom is clean, the prop settings are the same and the sea condition is flat water with no wind. Why would the performance at engine be so much less??
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Old 06-01-2014, 23:39   #32
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Re: MPH Motoring a 47' Sailboat?

Is it possible that whilst the prop was being greased the pitch settings changed?

If the engine is reaching full RPM and the speed is low, too low a pitch is a candidate for being the perp. If it is feasible, try increasing the pitch a bit and re-test.

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Old 07-01-2014, 00:44   #33
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Re: MPH Motoring a 47' Sailboat?

That would be a strong possibility since I never recall the boat going much faster.

But can the pitch be changed while greasing the prop??
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