Revised 20-20B web page
17 July 2005
Self-Steering Designs by Walt Murray
   URL   http://www.mindspring.com/~waltmur/Self-Steering/

Please note that this site is being reactivated after about a year and
 there are many missing and revised files. I am trying to retain most of
the old 20-20 files but I need to cut much of the old pages to be able to
fit my allowed web space on my ISP server.  The new version is 20-20B

                                                Scroll down

                                             A  model 20 - 20 crossing the Adriatic Sea  
                                                             You too can build one  

                              
Basic Design                Model  " 20 - 20 "           
                                                          Click to enlarge thumbnails   

 Model 20-20B                                         

  
Commentary - Discussion of the basic design with more detail 
                         comments on the intent and building procedures.

JPG Drawings - Scanned drawings of the basic design
                          with links to related photographs.

   Related Photos-- Photographs of detail parts .
                                   Also   see " More Photos "

   Advanced models--Designs requiring more skills to build and 
                                          ideas for future development. 

   Advanced models-2 -- Additional designs for study and consideration.

   Technical notes--Sample calculations and theoretical considerations.

   Design considerations --Some considerations that apply to designing a
                                                 good self-steering device.
  

                                                              My Boats

           For a little about me take a look at the "My Boats" page which is really not much
           about self-steering---just a place to put my things

                 

     Model 2004--Evolution
                                                                                                                On advanced page

                     The vane that started it all mounted on my boat.
           The construction is very different from this basic design
            but the geometry is the same and both do a good job 
            steering my boat. 

             
          These drawings and this web site are the result of my experience  building several different "Wind Machines" as my wife calls them. I am retired and have a lifetime of experimental engineering to draw on. What started as a  solution to self-steering on my small boat grew into a hobby. Bad health has put a stop to my needing much in the way of such devices so now I enjoy helping others by providing drawings and help with building them. I have used ideas from other
builders and if I have not given each credit it is an unintended error on my part.
I feel as one builder put it --" ' the value of your site is to encourage people to
design and build their own vanes' " . I hope it is helping.

      The drawings were made using AutoCad Lt 2000 and the JEPG images were made from scanned letter size prints.  The compression is such that some detail may be hard to see.  They show well on my 17 inch monitor. If you have trouble viewing them please contact me  for larger file sizes that I can send via E-mail 
                                                  waltmur@mindspring.com

      I would also appreciate any comments you might have relating to
      to this site or the designs. This effort is pure hobby for me and
      is non-profit. My only compensation is the satisfaction of sharing
      my efforts with others and introducing the joys of having a good
      self-steering system onboard.