Alex, I'm pretty sure that Rob Ball was the responsible designer pre-1980 as well.........
-----Original Message----- From: cnc-list-boun...@cnc-list.com [mailto:cnc-list-boun...@cnc-list.com] On Behalf Of Alex Giannelia Sent: Thursday, September 27, 2012 12:44 PM To: cnc-list@cnc-list.com Subject: Stus-List Adding Keel Shoes Fred, Thanks for that info. I have been researching the issue of keel/rudder shape for quite some time and no conclusive answers. Some feel the elliptical ends are best (mainly for rudders) and there is another body of thought that the bottoms should be squared off. If aerodynamics and hydrodynamics were a real science, they would all look the same. I noticed the pre-Rob Ball designs had rounded bottom edges and the post 1980 designs had flat shoes. One now deceased sailor at our club in fact took his original swept back Viking 33 keel off, sent it to Mars and had it reshaped to look like the Rob Ball designs and got great pointing as a result. Another guy at another club simply melted old batteries and extended the keel as you did. Alex: I was fortunately able to get a drawing of the shoe from Rob Ball that extended the existing keel in all aspects. Once it was faired in you could not tell it did not come from the factory like that. As I recall the bottom of the keel was flat. Fred _______________________________________________ This List is provided by the C&C Photo Album http://www.cncphotoalbum.com CnC-List@cnc-list.com _______________________________________________ This List is provided by the C&C Photo Album http://www.cncphotoalbum.com CnC-List@cnc-list.com
