Project: bbellamy     -     Entry

Nov 18, 2023 5.5 GMU 11, Controls, plastic Category: Fuselage
Met my goal for another week. No misses for this phase.

Looked at GMU holes I drilled yesterday and realized only one was in the desired position. Measured and marked more and then slotted holes as needed and drilled and cleaned up the final holes. Modified the final small standoff and mounted the GMU with the two standoffs and screws closest to the bulkhead. It looked good so added the final two standoffs. Drilled a hole for a nylon cable support. Need to prime holes and mount with final hardware later. Made an aluminum "wrench" so I can tighten the final mounting locknuts without using a magnetic tool. I already have the beryllium copper non-magnetic screwdriver.

Started working on the control sticks again using the new bushing. Used 1/4-20 all-thread, nuts and washers to bend the yoke ears out slightly for the new bushings. Went through multiple iterations of washer stacks and modifying the length of the bushings on both the co-pilot and pilot stick. I got the pilot stick working great with very low friction and almost no free play. I think the combination that worked had a bushing about 0.040" longer than the control stick bushing enclosure and a 0.030" spacer taking up all but 0.010" of the extra space. The co-pilot stick still needs work. There is some free play if you move the sticks towards or away from each other and I hope the final tightening of the spherical bearings will fix that.

I peeled all the blue plastic off the bottom of the fuselage since it is easier to move while I don't have to crawl under the airplane to reach it.


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