Dynon Avionics Capstan Servo (Cable-driven) User Manual
Page 5
DYNON AVIONICS
Capstan Servo Kit – Installation Instructions
4
101385-000 Rev D
cable would be attached to separate cables in the primary control system; ie the "up" and "down"
cables for the elevator, or the "left" and "right" cables for the aileronNote: the swaged index pin on
the bridle cable should be positioned in the center of the pulley between the two bridle cables as
they exit the pulley.
This second configuration is suitable for connection to elevator and aileron systems which function
as "closed loops" in which it is not possible for any cable in the control linkage to experience slack
in normal operation.
Figure 3
This configuration ***WOULD NOT*** be suitable for connection to a rudder cable system in
which deflection of the rudder by the pilot could result in slack in any of the primary control cables
or the attached bridle cable.
With the cable clamps attached, move the control stick fully in both directions several times. The
servo action should translate to smooth and consistent feel at the control stick with no binding or
rubbing. If there seems to be excessive friction, cable slop, or the cables have jumped a groove or
fallen off the edge of the pulley, it must be reinstalled in a location that provides a better angle for
interaction with the aircraft cable. Also verify the cable clamps do not come in contact with anything
during full travel. The built-in control stops of the aircraft will limit the servo capstan rotation when
installed correctly. It should never rotate more than 150 degrees in either direction from neutral.
For the latest documentation for all Dynon products (also available a
Please
read through that documentation to understand the wiring and configuration process for your
Autopilot system. We also maintain a collaborative set of this documentation, which is often
updated with new information by both Dynon and fellow builders. Vis
to
view and contribute to the latest version of these documents.
You can also visit
to discuss and share installation notes, pictures, and
suggestions with other builders.
Neglecting to properly install and/or use Dynon autopilot hardware may
result in failures which could cause loss of aircraft control resulting in
aircraft damage, personal injury or death.