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Buck's RV-8
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Date: 4-14-2008
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Number of Hours: 3.20
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Manual Reference:
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Brief Description: Aileron trim; autopilot servo; gear leg prep
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I noticed an error in Van's kit. The aileron trim servo kit comes with a jig you're supposed to use to locate and drill the mounting holes for the servo and the tube guide. This jig, as it turns out, is about 1/4" off from my pre-existing QB fuselage holes, so it appears that this is one of those times that I'll have to press ahead and work with what I actually have, rather than what the plans say I'm supposed to do.
I located and drilled the mounting holes for the trim servo tray and the tube guide, using the servo as a guide for the exact fore/aft placement of the mounting tray. I had to trim just a tiny bit from one side of the top of the mounting tray so it would clear a bulkhead intersection.
Next, I located and drilled the mounting holes for the autopilot roll servo. I elected to drill out two of the QB rivets and re-use these holes for the top two rivets on the bracket. I also discovered that the installation of the roll servo causes a conflict with a floorboard stiffener, so I trimmed off about 1/8" of the stiffener (See photo #3 below). I may have to trim some more later, during the installation of the servo actuator arm.
Next, I deburred and re-primed all components, and painted the flap microswitch mount and striker plate.
The last thing I did today was remove the pre-installed gear leg covers, in preparation for installing the gear. Two of the #6 screws were so tight I had to use a "screw-out" bit and some PB penetrating oil on them. Take THAT, screws!
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Aileron trim servo tray (left) and pushrod tube guide (right) clecoed in place.
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Autopilot roll servo and bracket test-fit in place. The top two holes were from drilled-out rivets.
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The stiffener had to be trimmed so it didn't hit the servo bracket and bolt heads.
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