The last article I wrote was on the use of a router and templates to create exacting duplicate parts without the need to sand. This part will be construction of the Leading edge assemblies.
The strength of the airplane is in the leading edge, especially where the leading edge is attached to the center rib. The ribs are nothing more than pieces of wood used to make the covering take on an airfoil shape.
When I decided to build my own leading edge assemblies, I knew it was going to be a challenge. Like templates, its all in the preparation. Its also best to build these leading edges in larger groups and save for later aircraft.
First, I take 1/8” X ½” spruce spars and taper them on my router.
Second, Cut my Leading edge foam with a hot wire.
Third, Using a tapered jig, I rout a tapered notch down the leading edge foam to accommodate the tapered spars.
Fourth, I Glue the Foam leading edges to the spars and hold the assembly with a jig.
Fifth, I add 1/16 balsa shear webbing in the back of the leading edge assy.
Lastly I wrap the leading edge with tissue paper and secure with 50/50 white glue and water. I do not wrap the back side of the shear webbing. By not papering the shear webbing, the bare wood gives a better glue bond to the ribs.
