[Public-List] A30 Hull Prismatic Coefficient

David A. Bardsley davebardsley at eastlink.ca
Tue Jun 29 18:00:48 PDT 2021


   That makes a lot more sense.  Thanks for the insight.
   Dave
   Ginseng 574

   On Jun 29, 2021 19:31, Jonathan Bresler <262alberg30 at gmail.com> wrote:

   395 is the displacement / length ratio of the Alberg 30.
   The Angelfire site miscopied the data.
   Guessing that they took data from the drawing
   [1]https://www.bresler.org/Sailing/Logs/Drawings/A30_hull_lines_and_sta
   ts.pdf
   Cp is listed as 0.52

   On Tue, Jun 29, 2021 at 1:14 PM David A. Bardsley via Public-List
   <[2]public-list at lists.alberg30.org> wrote:

        I found similar numerals, certainly 0.395,  printed on a
     different site
        [3]https://www.anglefire.com/ca/Alberg30/tech spec.html  where
     they are
        completely upfront about copying them from a different source.
        On Jun 29, 2021 11:01, Wes Gardner <[4]wesgardner1952 at gmail.com>
     wrote:
        Here's a site with the Cp shown as 395...not sure about that
     number
        [1][5]https://www.angelfire.com/ca/Alberg30/techspec.html
        On Tue, Jun 29, 2021 at 8:09 AM David A. Bardsley via Public-List
        <[2][6]public-list at lists.alberg30.org> wrote:
             Kris,
             I've decided to "stay in my lane" so to speak and being an
          electrical
             engineer focus on the volts and amps leaving the
     transmission
             implenentation to the good folks at thunderstruck-rv.
             I also received a quote from electric yacht for their
     system, but
             decided against their approach.
             Dave
             Ginseng 574
          _______________________________________________
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     [5][9]http://lists.alberg30.org/listinfo.cgi/public-list-alberg30.or
     g
     References
        1. [10]https://www.angelfire.com/ca/Alberg30/techspec.html
        2. mailto:[11]public-list at lists.alberg30.org
        3. [12]http://www.alberg30.org/store/A30supporters.html
        4. mailto:[13]Public-List at lists.alberg30.org
        5.
     [14]http://lists.alberg30.org/listinfo.cgi/public-list-alberg30.org
     _______________________________________________
     These businesses support your Association:
     [15]http://www.alberg30.org/store/A30supporters.html
     Please support them.
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     --

   Jonathan M Bresler
   S/V Constance Alberg 30 #262
   Annapolis/Eastport MD

References

   1. https://www.bresler.org/Sailing/Logs/Drawings/A30_hull_lines_and_stats.pdf
   2. mailto:public-list at lists.alberg30.org
   3. https://www.anglefire.com/ca/Alberg30/tech
   4. mailto:wesgardner1952 at gmail.com
   5. https://www.angelfire.com/ca/Alberg30/techspec.html
   6. mailto:public-list at lists.alberg30.org
   7. http://www.alberg30.org/store/A30supporters.html
   8. mailto:Public-List at lists.alberg30.org
   9. http://lists.alberg30.org/listinfo.cgi/public-list-alberg30.org
  10. https://www.angelfire.com/ca/Alberg30/techspec.html
  11. mailto:public-list at lists.alberg30.org
  12. http://www.alberg30.org/store/A30supporters.html
  13. mailto:Public-List at lists.alberg30.org
  14. http://lists.alberg30.org/listinfo.cgi/public-list-alberg30.org
  15. http://www.alberg30.org/store/A30supporters.html
  16. mailto:Public-List at lists.alberg30.org
  17. http://lists.alberg30.org/listinfo.cgi/public-list-alberg30.org



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