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  1. kmisegades

    AeroSouth Sunfish Components

    An update on the new Sunfish 'Sabre' rudder we're developing at AeroSouth. Below is a picture of our first rough-cut 'Sabre' rudder fin for the Sunfish. Solid poplar is being used only for setting up the 5-axis Homag mill and fixtures. The actual parts will be made from a laminate of Sapele...
  2. kmisegades

    Looking for safety tips for sailing all alone

    Great timing - Yesterday I was sailing on Lake Auman, behind our house here in Seven Lakes, NC. 100 feet deep at the dam. The wind was up and gusting. I like sailing fast and push my old Fish pretty hard. While reaching hard, the spruce mast snapped at the deck with no warning. Thankfully...
  3. kmisegades

    Laser Foil Details sought

    An update on our new Laser components: our sheet clip and mast hole plug are now available at https://aerosouth.net/sailboats We are also making good progress on the new 'Sabre' rudder fin and dagger board for the Sunfish and have started designing the same for the Laser. All for...
  4. kmisegades

    AeroSouth Sunfish Components

    An update on our new Sunfish components: our sheet clip and mast hole plug are now available at https://aerosouth.net/sailboats We are also making good progress on the new 'Sabre' rudder fin and dagger board.
  5. kmisegades

    Laser Foil Details sought

    Very nice. I did something similar on my Sunfish, which comes with a highly swept rudder fin guaranteed to create weather helm. The foam-and-fiberglass process from aircraft designer Burt Rutan was followed. I kept the overall area and draft approximately the same. It lowered weather helm...
  6. kmisegades

    Laser Foil Details sought

  7. kmisegades

    Laser Foil Details sought

    I will look at both designs in comparison to my clean-sheet Laser rudder fin, which will likely appear similar to the ‘Sabre’ rudder fin I’ve designed for the Sunfish. See some details at Aerosouth.net.
  8. kmisegades

    Laser Foil Details sought

    Nice. You made a new rudder fin, correct? What materials did you use? Are there details on Mr. Kirby’s design? Thank you.
  9. kmisegades

    Laser Foil Details sought

    Thank you! That makes sense as it is a popular airfoil for airplane control surfaces.
  10. kmisegades

    Laser Foil Details sought

    I guess it is how you first learned the terms. We use 'centerboard' for a device that pivots, and a 'daggerboard' that slides through a trunk. They both have the same purpose, of course, but some subtle differences that will affect usage and performance.
  11. kmisegades

    Laser Foil Details sought

    Thank you sir, this is very helpful. The Laser has a daggerboard though, not a centerboard? Perhaps our terminology is a bit different. The Sunfish had a similar limitation on what could be done to the daggerboard given the fixed dimensions of the trunk slot. Nevertheless I was able to...
  12. kmisegades

    Laser Foil Details sought

    I recently developed new efficient daggerboard and rudder for my Sunfish. See aerosouth.net A friend in Florida has asked me to do the same for his Laser. I have the overall dimensions but need yet details on the foils used for both, as these are the baseline for my design. I used the...
  13. kmisegades

    AeroSouth Sunfish Components

    Lake Norman is fairly crowded. Our lake is private and does not allow jet skis. The wake boarding boats though are sometimes a nuisance here, but we all get along fairly well. This time of the year I have the lake to myself.
  14. kmisegades

    AeroSouth Sunfish Components

    i have heard that in the summer one can walk across the lake from boat to boat. It is near Mooresville, center of the US Motorsports industry. Those guys are into powerboats.
  15. kmisegades

    AeroSouth Sunfish Components

    This is true. We have some 30 Sunfish on our lake and regular regattas during the season. The Orient and Harker's Island areas on our coast are popular venues for regattas, including Nationals for several different boat classes.
  16. kmisegades

    AeroSouth Sunfish Components

    Good ideas, thanks. Wing design programs are well verified, so I do not doubt the numbers for the current daggerboard and rudder versus my designs. How this relates to actual performance on the water is impossible to say of course. When I was involved (in a very minor way) with the Stars...
  17. kmisegades

    AeroSouth Sunfish Components

    The wind on our lake varies in direction depending on which branch one approaches or passes. It was also shifting in direction and dropping in strength as we had a front go through yesterday, especially as I came home. It was not a good day for sailing, and was quite cool, but any day sailing...
  18. kmisegades

    AeroSouth Sunfish Components

    I have created a Sunfish Speed Blog at aerosouth.net. Feel free to comment.
  19. kmisegades

    How fast?

    I have created a Sunfish Speed Blog at aerosouth.net, citing this thread. Feel free to comment.
  20. kmisegades

    AeroSouth Sunfish Components

    Thanks! Seeing this reminds me of one lady Sunfish owner here who strapped a noodle onto the top of her mast. The aerodynamicist in me cringes at the thought of what the thing does to the airflow, cylinders being about the worst there is when it comes to drag. ..... but I am working on an...
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