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Flying Lead RV-14A
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Date:  8-12-2018
Number of Hours:  4.90
Manual Reference:  N/A
Brief Description:  Yaw Trim

Spent the day fabricating the yaw trim that will be installed in the rudder. As this is not part of the manual, it is taking a bit longer to figure out all the measurements, but moving along. I started with the appropriate hardware that included, VA-195C, VA-195D, K1100-06x10, AN507C632R8x14, AN365-632Ax4, and AN257-P4x24 (all ordered from Van's). I also fabricated the trim horns to which the arrm will attach (0.032" aluminum) and the aerodynamic cover where the rod will exit the rudder.

After looking at a few aircraft and thinking through the aerodynamic forces moving over the rudder I decided to install the trim servo on the right rudder skin instead of the left as others have done (Beach aircraft also does it this way for their Yaw trim).

After tracing out all the locations and centering the trim servo between the stiffeners and directly behind the middle attachment bolt for the rudder, I cut out the square for the double to rough shape and finished the hole using round and flat files. I then clamped and drilled the holes for the doubler plate before dimpling and priming the metal. I failed to cleco the access panel to the doubler before drilling the attachment holes which threw off my location just a bit. I ended up shaving about a millimeter of metal from the access panel to get the fit in the hole that was previously cut.

After priming, I riveted the screw nutplates to the doubler and plan to continue installation of the doubler on the left wing skin tomorrow. Next steps will be attaching the doubler, closing up the rudder which includes riveting the piano hinge to the trailing edge and doing a final measure / drill of the hole that will allow the trim push/pull rod to pass through the right rudder skin.
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