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Rudder? Rudder?

Ed #125 Since I am picking brains here.... On my "Fish-clone" the rudder is pinned so that if I should hit something it would rise up and not allow damage. This pin also has the effect of allowing the rudder to rise partially out of the water while sailing at faster speeds. I noticed that the Vanguard Sunfish parts locator has a detail of the rudder showing a tension spring. I would guess that this provides fource that keeps the rudder in the water at speed but allow movement should the rudder imapact something. Alaso this same diagram shows the rudder to have about a 30 degree rake. My "Fish-clone" has 0 degree rake at rest but I would guess about 45 to 60 under fast sail. With no local "Fish" to compare notes with I have no framework to judge my obsevations. Do you have any idea if I should be seeking to limit my under sail rake of my rudder? Thanks, Ed
Wayne Carney #127 Ed, Looking at the photo of your rudder I cannot tell exactly what keeps the rudder in the down position.... friction of the pivot screw tightness or simply gravity? The rudders like yours that I am aware of have a spring or bungee cord that is mounted off center in a manner that keeps the blade down while under way and up when .... well, it's up. Just like you are seeing in the Sunfish parts diagrams. Take a look at the photo called "Rudder Spring" that I posted in your folder. I don't know how the "rake" is determined. I do know that a 0 degree position is easiest to steer and the difficulty (tiller pressure) raises with the angle. The angle probably should not change while you are in motion. Wayne toggle quoted message Show quoted text -----Original Message----- From: Ed [mailto:conley49@...] Sent: Tuesday, March 25, 2003 9:01 AM To: sunfish_sailor@... Subject: [sunfish_sailor] Rudder? Rudder? Since I am picking brains here.... On my "Fish-clone" the rudder is pinned so that if I should hit something it would rise up and not allow damage. This pin also has the effect of allowing the rudder to rise partially out of the water while sailing at faster speeds. I noticed that the Vanguard Sunfish parts locator has a detail of the rudder showing a tension spring. I would guess that this provides fource that keeps the rudder in the water at speed but allow movement should the rudder imapact something. Alaso this same diagram shows the rudder to have about a 30 degree rake. My "Fish-clone" has 0 degree rake at rest but I would guess about 45 to 60 under fast sail. With no local "Fish" to compare notes with I have no framework to judge my obsevations. Do you have any idea if I should be seeking to limit my under sail rake of my rudder? Thanks, Ed

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