Saturday, February 7, 2015

Autopilot Pitch Servo Installation Completed

Made it out to the hangar yesterday and completed the instillation of the autopilot pitch servo motor. The pitch servo was mounted in the previous work session but the noise filter and wiring along with the F-1292 pitch pushrod assembly that attaches to the WD-1210 control column were left uncompleted.

The autopilot pitch servo motor receives a noise filter capacitor (assembly ES-00103) which is wired to the red power wires … two wires connect to the red power wires and a third wire attaches to a ground point obtained from the seat rib that the autopilot pitch servo is mounted onto.
The ES-00103 noise filter capacitor assembly will attach to the autopilot’s pitch servo motor wiring.

Installing the ES-00103 noise filter capacitor is easy … there are just two spade connectors to attach to the wiring and a ground wire with a ring connector which is attached to the seat rib along with another ground wire from the 9 pin Molex connector.  Both the noise filter capacitor and Molex connector get secured to the body of the SV32 servo motor with wire ties. The most time consuming part of finalizing the pitch servo wiring was figuring out how to wire tie all the wires so none of the wires were chafing on any of the metal surfaces such as the seat ribs or body of the SV32 servo motor.
Completed autopilot pitch servo wiring and attachment of the F-1292 pitch servo pushrod to the F-1210 control column.

I still need to silicone the noise filter capacitor for the fuel pump to the bottom skin … so I think I may also add a dollop of silicone to the pitch servo motor noise filter capacitor to prevent it from possibly moving under the wire tie. We have some warmer days coming so this may be a good time to get that task out of the way.

Sunday, February 1, 2015

Dynon Autopilot Pitch Servo Motor Installed

After being out of town for quite a while playing in the snow with friend Bernie’s snowmobile (thanks Bernie … it was a blast!), just had to brave the blizzard conditions and spend some time at the hangar. Didn’t have a lot of time before the game, so decided to finish up with the autopilot servo instillation … so prepared the Dynon SV32 pitch servo motor wiring for instillation.

Just as with the roll servo, the Dynon SV32 pitch servo needs to have its wires trimmed to 7" then have .093" female Molex connector pins crimped onto the wires. The Molex connector pins were prepared using the techniques discussed in the previous post for the roll servo … pins cut, trimmed, tabs bent up, the 22 gauge servo motor wires stripped long and doubled back on itself prior to being inserted into the female Molex pin for crimping.
Using a pair of flat nose pliers to bend the tabs on the Molex connector pin up to form a “U” prior to using the pin for crimping.
Crimping female Molex connector pins onto the pitch servo wires using the Tool Aid crimping tool.

After all the pitch servo motor wires had connector pins crimped onto the wire ends, the wires were inserted into the Molex connector housing. Prior to inserting the wires into the connector, feel it is a good idea to run my thumb nail under the locking tangs to spread them out a little more. This insures a positive lock when inserting the wire into the connector.
Servo motor with female connector pins attached ready for insertion into the nine pin Molex connector.
Inserting the first of the seven servo motor wires into the Molex connector.
The Dynon SV32 autopilot pitch servo motor with completed Molex connector ready for instillation.

Once the wiring connector was installed on the SV32 autopilot pitch servo motor’s wires, the F-1292 pitch servo pushrod was attached to the outer hole on the SV32 servo motor’s actuator arm per the plans. Physical instillation of the pitch servo motor is much easier than the roll servo motor because all the mounting hardware is in the open and easy to access. The plans call for using blue Loctite 242 on the mounting hardware which consists of one screw and three bolts.
The F-1292 pitch servo pushrod is attached onto the outer hole on the actuator arm and tightened using a torque wrench.
Tightening the single mounting screw to hold the pitch servo motor in position so the bolts can be easily installed next.
Torquing one of the Dynon SV32 autopilot pitch servo motor mounting bolts.
The Dynon autopilot pitch servo motor installed and ready for the wiring connectors to be attached to one another.

Stopped working at this point to head home to watch the game ... so will dress out the wiring during the next work session.