User Manual

Section 8 – Rudder Assembly

Required Parts

• Rudder

• Fuselage

Required Tools and Adhesives

• Phillips screwdriver

• Servo w/hardware

• Control horn

• Robart hinge points

Step 1

Mark the position for the rudder control horn with a

pen. The correct location is 3/4" up from the bottom

of the rudder and 1/4" rearward from the edge of the

rudder bevel.

Step 2

Using a 5/32" drill bit and drill press, carefully drill a

5/32" hole through the rudder, perpendicular (90°) to

the rudder centerline at the marked position. Be

especially careful when penetrating through the

backside of the rudder.

Step 3

Using an 8-32 tap, thread the hole that you just

drilled in the rudder. Countersink the hole on the side

that will be opposite the rudder servo.

Step 4

Thread a hex nut (included with swivel clevis) onto

the threaded rod and securely tighten against the

rudder. Screw a molded swivel link onto the threaded

rod so the top of the link is 7/8" from the surface of

the rudder.

Step 5

Hinge the rudder using the same technique as with

the aileron and elevator.

Step 6

Remove the stock servo arms and replace them with

heavy-duty 1

" arms. Assemble the rudder control

linkage using a 5” titanium linkage and ball ends.

Step 7

If you are using two rudder servos there is an

opening opposite the one shown in the photos.

Remove the covering from the opening and repeat

Steps 1 through 6 to install the second rudder servo.

You will also have to use a threaded rod in Step 1

instead of the single bolt to have connections on

both sides of the rudder for the linkages.