Interesting effects from filming propellers: http://www.youtube.com/watch?v=Y9Px9EAhyss&feature=related <http://www.youtube.com/watch?v=Y9Px9EAhyss&feature=related> http://www.youtube.com/watch?v=T055cp-JFUA
<http://www.youtube.com/watch?v=T055cp-JFUA> http://www.youtube.com/watch?v=LVwmtwZLG88&feature=related <http://www.youtube.com/watch?v=LVwmtwZLG88&feature=related> On Thu, Sep 23, 2010 at 6:23 AM, John Fields <jfie...@austininstruments.com>wrote: > On Wed, 22 Sep 2010 13:12:27 -0400, you wrote: > > Sailboats vary enormously in terms of their favored point of sailing. > I would guess that most sailboats do best with the wind on their beam > (90 deg.) My boat is best on that point, and I can also sail into the > wind to about 28 degrees without pinching, which is exceptionally. > Downwind is slow for me, so I often tack downwind, keeping main and > gennie filled. > > I wonder what race committees will say when a sailor shows up with > this rig. Thinking of John's explanation, though, I suppose it will > not work as there won't be any torque transmission from the wheels to > the prop. > > Right, John? > > --- > I think so since, even if the prop was coupled to an underwater screw, > the coeffiction of friction between the water and the screw would be > so much weaker than that between a wheel and the ground that it would > be hard to keep the prop from turning the wrong way initially. > > --- > JF > >
