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Dave's RV-7A Builder's Log
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Date:  11-27-2016
Number of Hours:  3.50
Manual Reference:  
Brief Description:  Autopilot wiring and throttle, prop & mixture cabl

Short session today. I spent about half the time removing the throttle, prop & mixture cables in order to take the throttle quadrant sub panel out for final finishing. I’m not sure what I was thinking when I installed all of those cables as if they were going in permanently, but I realized that I would have to take them all out in order to remove the subpanel, so today was the day. The throttle cable was already mostly disconnected since I had been working on the cabin covers and that particular cable runs through one of them. The mixture cable was fairly straightforward but the prop cable was a bear to remove due to the fact that all of the connections are on the back of the engine and access is poor…to put it mildly. It took me almost an hour to remove all of the cables.

The second part of the session was focused on wiring up the autopilot. There are two leads, one 8-wire and one 9-wire, that run from the roll and pitch servos to the autopilot controller. Trutrak had fabricated the part of the harness that connects to the autopilot controller, but I still needed to fabricate a harness to connect power, ground, control wheel steering and the 17 leads from the two servos. I had decided to bring the power and ground to a terminal block on the sub panel, so I first installed the terminal block, and then added jumpers to connect multiple power and ground terminals together. After I finished that, I trimmed the bundles and added some heat shrink to make the whole think look a little more professional. I ran out of time before I put the connector together, but that shouldn’t take long, and aside from running a ground wire to the block, I will have the autopilot wiring finished by the end of the next session.
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Autopilot power & ground terminal block

Autopilot power & ground terminal block

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