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  1. gratko
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    Why are my rudders so ineffective ? (pwc converted to propeller)

    I have not read the entire thread but most of it. My opinion is that the problem is the prop walking indeed. The prop pushes the back of the pwc...
    Post by: gratko, May 24, 2008 in forum: Boat Design
  2. gratko
    Post

    Surface Piercing Foil Damping

    I think that the idea has a great potential. You can find something like this at www.americanhydrofoil.com but after many years this site remains...
    Post by: gratko, Apr 9, 2008 in forum: Boat Design
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