On Mon, Aug 9, 2010 at 1:37 AM, bjarthur123 <bjarthur123@yahoo.com > wrote:
i wonder whether there has been any more development since. in particular i wonder whether any boats have been built with such rudders and what control system they are using. that search is next on my long "to do" list...
I built Speer foils for one of the test bed harrys. Set up to rake them aft to get the balance correct. Tiller steered. I found that when they were turned one way, flow stayed attached and they were great. The other way, the flow seperated much earlier and they were hopeless. Could have been lousy shaping, but I have never had problems with NACA foils built the same way.
They were not high on my to try list as the NACA 0012 skeg rudders are working well. Thanks to Rick, Todd, BMWO, those bloody mothies and sundry other contributors to this site, the "to try" list is getting way out of hand. Look forward to seeing some new results.
Moved the Sol hulls and beam out of the shed and onto the grass today for assembly when the mast os built. Bit of a task single handed, but nothing got dropped. Start sanding and painting El on Thursday.
rob
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