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Builder:
  Marlin Sander
Location:
  Helena, MT - USA
Aircraft:
  RV-7A
Total Build Hours:
  3028
Web Site:
  http://www.mykitlog.com/msander/

Date:  08-29-2018
Number of Hours:  1.50
Short Description:  Adjusted Elevator Trim to Center Pitch-Trim Indica

The Elevator Trim Indicator does not have an electronic calibration to center the indicator when the trim tab is centered. So, I did the calibration ‘backwards’ from what I would expect could have easily be done electronically…I adjusted the “hat-switch” trim until the indicator showed it was centered (neutral position). Then I adjusted the trim actuator push-pull rod to align the trim tab with the surface of the elevator and secured the clevis-pin on the rod with a cotter pin. I also tested the trim tab by extending the tab to its full upper and lower limits to make sure I didn’t introduce any binding by extending the push-pull rod and clevis. I had no issues and now my indicator is accurately adjusted to show when the trim tab is in it’s neutral, trim up, or trim down position.




Centered Elevator Trim Indicator





Centered Trim Tab w/o Rod Atch





Adjusted Rod End Clevis & Test

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