The rudder consists of the skin, 3 ribs, 4 stiffeners, a hinge half, and the rudder control horn.
***CAUTION: IF YOU DO NOT USE THE FIXTURE BLOCK YOU WILL BUILD A TWIST INTO YOUR RUDDER. FOLLOW THE INSTRUCTIONS!!
Note – Use caution! It is suggested you use a drill stop through the following procedures as it is easy to damage the opposing skins when drilling on the relatively thin cross sections of the control surfaces.
** NOTE - Regarding rivet options for hinge: The side of the hinge that attaches to the control surface will be a protruding head rivet, EXCEPT for the trim tab (depends if you are using countersunk or protruding head rivets on your skin). The side of the hinge that attaches to the main structure will use the rivet type you are using on the skin, and length according to rivet length guidelines.
**Note - some builders prefer stainless steel rivets on the hinges for the additional shear strength.
Simple overview
1.Prepare Parts using guidelines
2.Fit rudder control horn to rudder rib 1
3.Fit stiffeners to skin
4.Fit ribs
5.Fixture
6.Fit hinge
7.Up drill
8.Disassemble, debur and dimple as needed
9.Re-assemble and rivet
