Originally Posted by Rolf_Nilsen
No dolphin striker to hit waves is faster.

I dont know what happened to the rules in 2010 as the ISAFisation process was going on.. Look at this for the rudders in a PDF of the 2010 rules I found on the forum on the class website.

Quote

E.4.4 CONSTRUCTION
(a) The cross section of each rudder shall be symmetrical about its fore and
aft centre line .



Now what does this mean?? Rudder winglets certainly is allowed in multiplie configuration and is used in the class but this effectively does not allow L-shaped winglets. No discussion, no ballot and comments..


T foil rudders are specifically mentioned as allowed. No varying shape is allowed on the dagger although they could be assym as long as they are straight and canted no more than 6 degrees. You could easily argue that a J or L foil on the rudder would be likewise allowed.
What is not mentioned is moving flaps or likewise appendages. By the rules you could add them on the rudders now and vertical flaps to the daggers too if you wanted to. - That ought to bring forth a big rules debate as soon as somebody shows up to a worlds sporting moveable flaps.