This unit was originally designed for the King Air C90 simulator that we built for a flight school last year, although the entire throttle quadrant that we developed in doing so was based around the dimensions used in our King Air B200 construction drawings. [Note: We don't offer the TQ dimensions themselves as the originals were based around a particular product from a 3rd party that was a one-off design. We are, however, in the process of organising a basic King Air Throttle Kit, which will consist of various, unassembled aluminium levers, acrylic plates, knobs, etc.]
Anyway, back on topic, our complete Operational Elevator Trim Unit is supplied pre-assembled and consists of the following components:
- Trim Wheel (unpainted)
- Trim Dial (printed/laminated scale supplied)
- Gears and Belts
- Motor and Mount
- Motor Control System Circuit Board
- Pot to connect to your joystick controller
- Push-rod to connect trim dial to pot
- Physical stops to prevent over-travel
The mechanics of the unit is assembled on a shaped side-plate, and a corresponding side-plate for the other side is also supplied. These can then be screwed to the outer sections of your throttle console/pedestal, where they will then form the correct curve for the rest of your throttle lever assembly.
All you need to do is connect 12Volts DC to the control system as well as connect three wires to the centre-biased rocker switch in your yoke. The rocker switch will then control the forward and backward motion of the trim wheel. The geared down trim dial is connected via a pushrod to the pot (mounted on its own bracket), which will be wired to your joystick controller. (This will need to be set up in FSUIPC as the Elevator Trim input)
The trim wheel can be manually operated as well, as the motor torque has been purposely kept low so to allow it to readily stall.
Below is a short video from our YouTube channel showing the motorised trim actually in operation ...