today - assembled the rudder head stock, and fitted the shaped blade. Nothing fancy on the shaping, I simply planed and sanded a reasonable shape to the flat stock so that the thickest sections were about 1/3 back. Will coat with epoxy and paint when the days get longer and warmer.
Builders of a CS 17 should note that the leading edge of the rudder protrudes slightly forward of the head stock. When the pintles are added, it will be in line with the pivot point.
yup, Its snug, but wont take much to loosen up. A little sanding and then prime and paint.
Centerboard shaping -
From the blank, I attached a NACA 0006 series template to the end of the tip and drew a line around the tip. Then I set up the router to rout grooves to the depth indicated on the template up and down each side.
template is sitting on the blade, was attached to the tip. radial lines kept to the ratio were then scribed on the blade and a guide for the router set up.
Not bad for a first attempt. A few low spots and some high spots still, but fixable. the router and electric plane made short work of this. Then followed up with the wood eraser (7" disc grinder), and palm sander.
Leading edge needs some attention, and I still need to shape the tip. Not quite sure what I am going to do here. Just a simple rounding over? When the board is raised partially, this will also be a quasi trailing edge.
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