Hangar 9 J-3 Piper Cub Assembly Manual page 30

Section 12: Installing The Linkages
3. Attach the elevator control horn using the hardware
provided (two screws and back plate) and fasten in place
using a Phillips screwdriver.
4. Attach the other control horn to the opposite elevator half
using the same method.
5. Next, install the rudder control horn on the left side of the
rudder. Place a mark with a felt tipped pen 3/4" from the
bottom of the rudder (left side) as shown. This mark
represents where the center of the control horn will be
located.
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6. Center the control horn over the mark you just made and
using a pencil, mark the mounting hole locations through
both holes onto the rudder.
7. Drill these holes with a 1/16" drill bit and install the
rudder control horn using the two screws and back plate
provided.
8. Locate the two balsa dowel pushrods and cut them both to
19-1/2" in length.
9. Using either a pencil or felt tipped pen, mark 2" from each
end of both balsa dowel rods (4 places).
CONTINUED