Project: bbellamy     -     Entry

Nov 17, 2023 7.9 Garmin, Aileron Trim, Control Sticks, GMU 11 Category: Fuselage
Completed registering Garmin products on their warranty website.

Opened, inspected and inventoried packages from McMaster Carr, Aircraft Spruce and Flyboys.

Selected type of screws to use for COM antenna mounting - MS24694C with length of 6, 7, 8 or 9.

Completed aileron electric trim install using longer clevis pin than specified on the servo side of the link. Watched the EAA video on cotter keys and read the section in AC43.13-1B. Clevis pin MS20392-1C9 wasn't long enough so used 1C11. Installed servo using shorter screws, MS32506-229 instead of AN515 6R8.

Started working with the replacement bushing for the control sticks. Figured out good ways to trim to length (drill press and file, disk sander, file) and to ream (two hand drills or a hand drill and a reamer held in a tapping handle). Made two bushings to test fit. Decided to use 1/4-20 all-thread, nuts and washers to spread the yoke apart before trying the new bushings. I made the bushings longer than the tube on the stick and want the yoke to squeeze against the bushing to keep it from rotating.

Worked with new standoffs to figure out how and where to mount the new GMU 11. Decided to nest it against the aft side of the F-709 bulkhead by using 5/8" standoffs to mount it above the F-714 aft deck. This requires grinding the edges of the small standoffs to provide clearance of the F-714 bend radius. This allows the most edge distance between the large standoffs and the two large holes in the F-714. Marked and drilled two of the holes.


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