I have a brand new rudder built with core cell, using air vacuum bagging technic. Foil, leadind and trailing edge and apature have been enhanced see pictures its during the process just after lamination.... the part for the pins have been modified from the original design.. I have two long stainless pins same diameter as original, and they need to be insert by the bottom of the rudder .. see picture it will help to understand. It may seem hard to insert but its very easy...
Step 1: 3 layers of core cell have been laminated together to get the good tickness of the rudder
Step 2 using CNC machine the shape and foil and been cut
Step 3 A long tube have been fix with epoxy and fiberglass all along the leading edge...
... also 1 inch holes have been drilled and filled with epoxy where the stainless plate will be fix (at the top of the rudder)
Step 4 Weight have been add at the bottom of the rudder
Step 5 Time to laminate...
Step 6 after lamination cut the extra part of the tube.. ie: apature etc..
Step 7 sanding... sanding...sanding..
Step 8 top part of the rudder will be painted with interlux toplac and interprotect for the bottom
You can Contact me to my personnal email. Thanks!