Aircraft Service Manual
Jabiru Aircraft
Pty Ltd
JTM001-1
J120, J160, J170, J200/J400, J230/J430, J250/J450 Variants
REVISION
1
Dated: Nov 2011
Issued By: SW
Page: 156 of 233
Ensure the required inspections are carried out and the cable is clamped securely.
WARNING
All spherical rod end bearings must be fitted with a large washer on the outside of the through-
bolt to prevent the bearing case and cable releasing in the event of a bearing failure.
12.5 RUDDER BALANCE
The J160-C rudder is balanced at the factory during assembly and unless the rudder is damaged the
balance should not change. If the rudder is found to be unbalanced outside the specified limits
cause for this condition should be ascertained before proceeding.
To balance the rudder it must be removed from the aircraft. Balancing is done around the rudder
hinges with the hinge pin line horizontal and on the high side of the rudder. The balance weight
takes the form of an epoxy resin and lead shot mixture set inside the leading edge of the rudder
horn. The balance should be changed by either removing lead or adding to this mass with a similar
mixture. The hinge moment can be measured using masses on the trailing edge or by measuring
the force needed to maintain the rudder for/aft centreline horizontal.
Weight and moment values are given below:
-
Weight
2100g
+/- 100g
-
Hinge Moment
17500g.mm
+/- 4000g.mm
12.6 RIGGING
1.
To establish the neutral position, raise the nose wheel off the ground by leaning down on the
horizontal stabiliser.
2.
Allow the nose wheel (and therefore the rudder pedals) to centralise.
3.
Align the rudder 5mm to the right at the top of the rudder when referenced to the lower lip of the
fin.
4.
Adjust the rod ends on the cable so that the hole in the rear rod end aligns with the hole in the
control horn.
5.
Fit bolt, nut and washers.
6.
Mark a line from the centre of the Rudder trailing edge onto the Fuselage. Displace the Right
Rudder Pedal to the Rudder Pedal Stop. Measure the Rudder displacement at the Rudder trailing
edge with reference to the previously scribed line. It should be 75mm +/- 2mm for all models bar
the J200 family. For the J200 family the travel must be 98mm ± 2mm.
7.
Repeat Step 6 for Left Pedal and adjust Rudder Pedal Stops as required.
WARNING
The Rudder Pedal Stops should engage
– NOT the Control Surface Stops on the tail.
DO NOT move the Cable Anchor Points or adjust control surface stops
– These are factory set.
