Adding strakes

Discussion in 'Boat Design' started by LowelandSystem, Dec 25, 2016.

  1. Mr Efficiency
    Joined: Oct 2010
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    Mr Efficiency Senior Member

    I noticed in another of his threads/videos it is pretty steep at the transom, looked like 20 degrees. That is a problem if you want easy planing with low power.
     
  2. Angélique
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    Angélique aka Angel (only by name)

    -
    Similar boats always have many small differences, so you can't attribute the full outcome of the test to only one difference such as the absence of lift strakes. You don't know what is causing the difference in outcome if more than one factor is at stake during the comparison, and therefore to attribute it to only one factor is just speculation and also it's highly unlikely true it's only due to one factor as all the small differences at stake have their influence in the test.
     
  3. Barry
    Joined: Mar 2002
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    Barry Senior Member

    While there is some merit in this observation, your suggestion that " it is speculation and is highly unlikely true" is incorrect. The first couple of boats that we built, off the same jig, with the same motor and pump and impeller cut did not have any strakes. We used a fuel flow meter and a Stabila angle level to determine running angle.

    The first boats gave us a set of tables as we built more, we added first, flat lift strakes and then reverse, or down turned strakes. The boat gave better performance with each change. The only gray area might have been the pitot tube style speedometer, the same manufacturer but difficult to guarantee the accuracy of speed between the gauges
     
  4. arkie
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    arkie New Member

    Angélique likes this.

  5. Angélique
    Joined: Feb 2009
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    Location: Belgium ⇄ The Netherlands

    Angélique aka Angel (only by name)

    Thanks for posting the update Arkie . . :)
     
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