RANS S-20 RAVEN
TEXT MANUAL
09
/01/2013
01C-01
HORIZONTAL STABILIZER AND ELEVATOR
ASSEMBLY AND INSTALLATION
ELEVATOR FIT-UP
(BEFORE PRIMING OF HORIZONTAL STABILIZER AND ELEVATOR
FRAMES)
1.
The elevator hinges must be secured in position. Temporarily bolt the
elevators to the horizontal stabilizers.
NOTE: There is a left and right for
stabilizers and elevators.
The stabilizers have bushings for fuselage
attachment. These bushings are on the upper inboard side of the frame.
The right elevator is identified by the trim tab hinges and the 3 welded
tangs (trim servo attach).
2.
Adjust elevator side-to-side to create 3/16” to 1/4” gap between the tip of
the horizontal stabilizer and the overhang of the elevator.
3.
With the elevator correctly positioned, slide each retaining collar against
the hinges. Position the retaining collar to allow the hinge to swivel freely
with minimal play.
4.
Locate and drill a # 30 hole on the interior side of each retaining collar
through the aft side of the leading edge spar of the elevator. Rivet in
position as per parts manual and disassemble elevators from horizontal
stabs.
5.
Mark and drill the aft hole for the elevator horn attach on both elevators.
Refer to
FIGURE 01C-05.
Temporarily bolt the control horn to the forward
attach hole already drilled at the factory and use it to mark the aft hole
location on the centerline of the tube. Take horn off and drill both elevators
# 11.
6.
Prep and prime horizontal stabilizer and elevator frames.
7.
Install nut plates to the elevator horn attach holes on both elevators. Refer
to parts page.
8.
Each horizontal stabilizer receives two ribs formed from aluminum sheet to
support the fabric.
NOTE: The forming process leaves the ribs slightly
bowed.
Use fluting pliers and crimp the rib flanges slightly between the
holes at the notch locations to straighten ribs.
9.
The ribs are riveted to the frame via welded tangs.
NOTE: The ribs are
symmetrical. There is no forward or aft.
Deburr ribs, orientate as per
FIGURE 01C-09
, and transfer drill through tangs and rivet in place.
10.
Elevators and horizontal stabilizers are now ready for covering. Refer to
COVERING
for instructions.
