Elevator Trim

Time: 2 Hours

I have had the elevator electric trim motor since I bought the tail kit so that I could work the mount it needed into the right elevator. During the time I was installing most of the wiring I ran the necessary wires, shielded 5 wire, to the horizontal stabilizer. I just had it bundled up where it exited the horizontals rear spar. I decided to get that wiring finished up since I will be installing that elevator soon. I’m using the Deans micro connectors commonly used in the remote control toy world. These need to be soldered to make the wire connections and are perfect for these small wires. I planned on running the wire from the stabilizer through a snap bushing that is in the elevator with enough to hang out the opening where the trim motor gets screwed in. That way I could mount the elevator and have the wires/connectors easily accessible so I could make the connections before mounting the motor. The extra slack in the wires can be easily tucked to the side of the motor as it’s is mounted. After a quick test the the motor functioned correctly I completed the wire connections with shrink tube to protect the joints. I installed the motor into the elevator and temporally installed the elevator. Dynon has a setup and calibration for the trim to identify the full travel of the motor in both directions. Once that’s done you are good to go minus identifying the trim location for takeoff. That will come later during flight testing. Once that’s done I will set that position in the Dynon setup and a green line will show on the trim indication so you can easily set takeoff trim. Here is a video of the trim as I move it through it’s full up and down travel. https://www.rv8-hangar.com/wp-content/uploads/2018/12/img_2504.trim-1.mov

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