Chine walking and other power issues

rwatson

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Since the first dawn of my 'super macgregor' project

http://www.boatdesign.net/forums/bo...sailer-power-cruiser-water-ballast-21999.html

the design has evolved into a hybrid round bilge, running strake design

http://schoolroad.weebly.com/project-2.html

and the attached Jpg file..

Now that the engineering and building research is underway, my enthusiastic engineer has suggested that the design could be made easer to build if we have the 'running strakes' ( the bottom 'step' on the hull ) run all the way through to the stern. The width is around 35 mm.

Without spending $10,000 on hull studies, I am trying to imagine the powered performance effects that this would have, in particular, on sharp turns.

To my mind, having more 'edge' would provide better planing lift under power in a straight line, and should prevent excessive 'chine' walking, since on a turn, the inner strake should be buried in the water.

If anyone has any opinions about this modification, or the concept as a whole, I would be interested to hear them.
 

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  • RunningStrakes01.jpg
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