Thanks folks. I see that there is direct cable connection to the controls. Maybe the springs I read about are in the control stick mechanism. Does it change the feel of the airplane? See the excerpts from two articles below.
"Unlike most light sport aircraft, the J230 controls are solid. Jabiru designed fluttery controls out of the airplane by linking the controls to springs. The pilot works against the spring to deflect the controls. The downside of this is that the pilot doesn’t get a lot of tactile feedback from the control surface itself. In this way, it feels more like flying a jet than a tiny high-wing."
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In between the seats is a tall stick that rotates left and right on a vaguely J-shaped apparatus that also supports the pivot for the pitch function. The rod attached to the stick below the foam grip is your first clue about Teleflex cables. Huh? Instead of conventional pull cables or torque tubes and pushrods, the Jabiru uses Teleflex push-pull cables for pitch, roll and yaw. The single pitch-control cable arrives up under the center console and attaches to the stick a few inches above the pivot; aileron control cables (one for each wing) attach behind the seats and travel upward in an arc to the wingroots.
Teleflex cables have some distinct advantages, primary among them simplicity and easy rigging of the controls. On the other side of the ledger: They represent a single-point failure (but then so does a single elevator pushrod, for example) and have inherent friction. Despite employing spring centering packs, the controls lack definition. Move them a bit from their resting place and they tend to stay there. Resistance to movement is discernible on the ground, and you wonder what it will do to the flying qualities."
Has anyone found this to be an issue while flying?
Thanks
