Advanced AF-5000, Installation Manual

Page: 42 / 267

Version 16.10
AF-6600 AF-5000 Series Install Manual
42
Compass Calibration Requirement
The Advanced-SV autopilot requires an accurate compass to operate efficiently and comfortably in
heading mode and the radio-based VOR/NAV mode. Therefore it is critical that the ADAHRS be
installed correctly, calibrated, and operating well in all attitudes.
Servo Mechanical Installation
Dynon Avionics has researched suitable mounting points for a number of popular aircraft and offers
mounting kits and instructions for them. If you have purchased one of these kits, use the instructions
included with it as your primary guide; the following mechanical installation information is more
general in nature. If you have purchased cable-drive capstan servos (SV32C or SV42C), refer to the
documentation that came with the included Capstan Accessory Kit (101116-000).
For installing Dynon Avionics servos in aircraft for which Dynon does not offer kits, we offer a Generic
Servo Installation Kit (101020-000) of basic parts and basic installation instructions. The generic servo
push-pull mounting kit includes some of the hardware to mount a servo and connect to the aircraft
controls, but requires the installer to fabricate mounting brackets. This kit can be used in either pitch
or roll applications that use a servo with an output arm (not suitable for use with pulley/cable servos).
Some additional fasteners (not supplied by Dynon) and brackets will be required depending on the
installation method chosen.
Neglecting to properly install and/or use Dynon Avionics AP hardware can result in failures
which could cause loss of aircraft control resulting in aircraft damage, personal injury, or
death. If there are any questions on the part of the installer it is mandatory to resolve these
questions prior to flight.
When installing the servo, you must first determine a mount location for proper
interaction with the existing control system. The mounting point that is chosen must
allow the servo arm and associated linkage to move freely through the entire range of
travel. To prevent the possibility of the servo arm going OVER CENTER, the servo arm
must not travel more than a total of +/-60° from neutral position. When the aircraft
controls are centered, the arm of the servo should be perpendicular to the attaching
push rod. If this is not the case, we recommend adjusting the length of the push rod or
consider a different mounting point. For maximum efficiency and the lightest drag on
the flight controls, you should choose the smallest servo that provides sufficient torque
to move and hold the flight controls with a minimum of slippage.
The servo arm must not rotate even near to the point called OVER CENTER, the point at
which the primary aircraft control would “lock up”. Over center happens when the angle
between the servo arm and the attached push rod becomes so great that the control
system cannot drive against the servo arm. To protect against this possibility, a Range of
Motion Limiting Bracket is supplied with each Dynon Avionics servo. These brackets are
drilled so that they can be mounted at different angles as required (18° intervals). The
brackets are supplied for the protection of the pilot, and we recommend that the Range
of Motion Limiting Bracket be installed to ensure that an OVER CENTER condition cannot
occur.
During normal servo operation, the Range of Motion Limiting Bracket should
never be used. It is only intended for use as a safety mechanism in the SkyView Autopilot
system.
When installing the Range of Motion Limiting Bracket, only use the supplied
screws. Using longer screws to install the bracket, you will penetrate and damage the
electronics.