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Jims RV-8
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Date: 1-21-2024
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Number of Hours: 4.10
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Manual Reference:
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Brief Description: Trim motor relay wiring
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Two steps forward, one step back, as they say. I again "started" wiring the trim motor relays today with the new/old methodology, which reminds me of a discussion I had a few months ago during the condition inspection of the Kolb. I was lamenting my slow building of the RV-8 with the A&P because I overthink everything. My A&P then rattled off a dozen significant problems he has found over his years of being an A&P from people NOT thinking through the building process. Now, this does NOT mean that builders who make quicker progress than me are not thinking through their build or making mistakes; it just means there are also benefits to thinking through the work, and there is nothing wrong with that. So today, I pulled the last of the trim motor wires through the spar as I found I had enough room in the big battery cable pass-thru for these wires, so I didn't need an additional spar hole.
Working on the bench, I terminated, labeled, and pull-tested all wires on the ground side, which will connect to the remote ground, and did the same with the power supply wires. Working at the bench is much more comfortable than working while leaning into the airplane. I ran a larger wire up to a 10-tab ground strip between the relays. I call it the remote ground as it is not locally grounded. Then, it was a matter of connecting the signal wires from the pilot stick and the activation wires that run to the trim motors. I took my time to double-triple-check that I was correctly connecting the relays and then laced the wires to tidy them up. I left the signal wires longer in case I had to move them around to get the proper trim motor operation during testing.
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Ground wires
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Power wires - connected to wire in airplane
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Trim motor relays are wired!
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