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Buck's RV-8
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Date: 1-20-2015
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Number of Hours: 9.20
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Manual Reference:
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Brief Description: Annunciator panel resistor box; flap microswitch
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This entry represents a couple of days of work on two electrical projects that have probably taken far longer than they should have. (But I just love engineering projects like these -- I can't help myself!)
1. Decided to add a second D-sub connector to the resistor box for the annunciator light panel, instead of simply running the wires out the side of the box. Cut the hole and attached the new connector.
2. Finished soldering the various resistors onto the PC board for the annunciator light panel, cut 18 lengths of 22AWG Tefzel wire, soldered one end of each to the appropriate pad on the board, crimped D-sub pins on the other ends, and wired the connectors. You'll notice in Photo 2 that the resistors are staggered up and down because of the tight spacing between slots.
3. Purchased and modified two new microswitches that will be capable of handling the load of the flap motor. (Only one of the switches needed to be this robust, but I wanted both of them to be identical in form factor, so the trim mode switch will be a bit of overkill.) Luckily, the new switches utilize the existing mounting holes after the holes in the attach angle were opened up from #4 to #6. The "modification" of the switches involved trading out their stock springs with... wait for it... springs I cut from a Bic pen in my kitchen drawer. I didn't like the weak stock springs, and after looking all over town for a suitable replacement, I realized I had some suitable ones right under my nose. I cut the pen spring in half, and the halves were perfect. I mounted the switches to the attach-angle with #6 stainless hardware.
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Resistor board with leads soldered and D-sub pins crimped on.
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Almost ready to close up the box.
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Flaps-up and trim mode microswitches mounted on their mount.
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