Manual control system?
Light aircraft control surfaces are mechanically connected to the pilots controls by a system of levers, control wires and pulleys
Why is the manual control system used with light aircraft?
The aerodynamic forces felt at the control surfaces are easily managed by the pilot
Turnbuckles
Tension the wires
Bell crank
The bell crank at the control surfaces translates the linear movement of the wires into the up and down, left or right movement of the control surface