Next the bellcranks needed to be installed. These levers attach to the rudder cable and actuate the rudders. The standard installation is to mount these outboard of the winglet where they can be seen. This isn’t very pretty so we opted for the option internal bell cranks. First a notch is made in the rudder to accept the lever, and the lever was ground to fit inside the rudder. Next the rudder was reattached and checked for fit, to see if the bellcrank interfered with the travel and that the end of the bellcrank was aligned with the rudder conduit internal to the wing. Once this was satisfactory the bell crank was roughened and potted in microglass.
Here’s the bushing that mounts to the rudder horn. When either rudder pedal is pressed, the pedal pulls this inward and deflects the rudder outboard. The return springs bring the rudder to neutral when released. You need to configure the system to get 4″ of travel outboard before the brakes engage.
Rudder Cable Installation
Posted By: Brett FerrellSaturday January 11th, 2003 at 7:35 PM
Categories: Winglets and Rudders Tags: Building Rudder Winglet Wings