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Old 04-06-2016, 04:21   #1
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Boat: Jeanneau 43DS
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Jeanneau 43 ds turn left above 2000 rpm

Need help here I own so 43ds from 2004 just done engine full service and antifowling
When cruzing above 2000 rpm on motor (yanmr 75 hp) a strong pressure starts affecting the ruder pushing the boat to the port side it has the original Jeanneau propelor and we have installed new catlas the hall, keell , shaft and propelor are clean

Any ideas?

Thank you
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Old 05-06-2016, 06:03   #2
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Re: Jeanneau 43 ds turn left above 2000 rpm

i was tolled that the reason for that is that Jeanneau made this model with ex center rudder located to the right and that is to be able to extract the shaft if needed without taking the rudder off and that is why the boat try to turn left.

dose anybody here heard about it?

thanks
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Old 05-06-2016, 06:26   #3
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Re: Jeanneau 43 ds turn left above 2000 rpm

It would not be uncommon for a builder to put the shaft off to one side of the rudder as you describe.


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Old 06-06-2016, 05:37   #4
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Re: Jeanneau 43 ds turn left above 2000 rpm

You could install a trim tab on the end of the rudder as they do to the rudder of airplanes that would push the rudder right to compensate. It would have to be somewhat adjustable under water, but it would take the pressure of the wheel over 2000 rpm. Set it to the RPM you want. Then it could be in fiberglass on the trailing edge of the rudder to mimic the adjustable one, and then remove the adjustable.
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