Balancing - Cub Crafters CC18-180 Maintenance Manual

3. BALANCING

(1) Insert a 0.25" diameter pin or bolt through each of the hinge holes of the rudder (2
per elevator) such that about 0.25" of the pin or bolt protrude from either side of the
hinge.
(2) Place the rudder horizontally over a bench such that the exposed sections of the pins
or bolts rest on a half tubes, knife-edges or a similar supports that have little friction
and allow the rudder to rotate freely (See Figure 27-20-4).
(3) Place a force gauge or scale at the trailing edge of the elevator, adjacent to the
SECOND rib, counting from the bottom of the rudder to the top. Ensure the rudder
chord is level. Record the weight.
IF NAVIGATION LIGHT AND TRIM TAB ARE NOT INSTALLED
(4) The weight at the trailing edge must be between 0.93 lb. and 1.32 lb. trailing edge
heavy.
IF NAVIGATION LIGHT AND/OR TRIM TAB ARE INSTALLED
(5) The weight at the trailing edge must be between 0.93 lb. and 1.40 lb. trailing edge
heavy.
If the rudder is not within these limits, contact Cub Crafters for disposition.
Manual number TC10000AMM
Date: 05/20/2008
CUB CRAFTERS, INC.
CC18-180 MAINTENANCE MANUAL
NOTE
27-20
Page 5