User Manual

2．The EXTRA is supplied with a high quality set of pull-pull cables and ball-links.
3．Locate the pull-pull cable set, threaded couplers, brass swaging tubes, and ball-links. If the cable is one
long piece, cut it into two equal length pieces. Thread one end of the one cable through a brass tube and
then through one of the threaded couplers. Run the cable back through the brass tube and then loop it back
through a second time. Using a set of crimping pliers, place three crimps just tight enough not to cut the
brass tube but enough to securely hold the wire in place. Cut off the excess cable with wire cutters. Wick
thin CA into the brass tube to help hold the cable secure. Repeat for the other cable.
4．Thread the couplers about half way into the ball links of the rudder. Hint: remove the ball links from
the rudder horn first to make this step easier and then re-install once the couplers are threaded on. Feed the
loose end of each cable into the cable slots at the rear of the fuselage and feed them forward towards the
servo mount location. A coat hanger with a hook on the end can be useful here if you can’t reach the cable.
5.Use your radio system to center the rudder servo and attach either the supplied arm or an appropriate arm
for your servo. Thread one of the ball links about half way onto one of the threaded couplers. Feed the
loose end of one of the cables through a brass tube and then through the threaded coupler. Holding the
rudder centered, adjust the cable length as tight as possible while checking the ball link position over the
servo arm. When satisfied with the position, pinch the cable around the threaded coupler and then feed the
loose end back through the brass tube. Loop the cable back through the brass tube as before and crimp the
brass tube three times just tight enough not to cut the brass tube but enough to securely hold the wire in
place. Cut off the excess cable with wire cutters. Wick thin CA into the brass tube to help hold the cable
secure. Repeat for the other cable. Hint: Once you have established the position of the threaded coupler
on the cable, you can remove the ball link from the rudder horn to give you more working slack in the
fuselage. Re-install the ball link prior to setting the other cable.
6. Check the operation of the rudder using your radio and make sure there is no binding and the cables are
adjusted properly. You may have to tighten the cables after a few flights as they may stretch slightly from
the initial installation.