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Traci and Tom's RV-7A
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Date:  11-26-2013
Number of Hours:  1.50
Manual Reference:  
Brief Description:  Connecting the trim tab servo/push-rod.

I carefully figured the total movement of the trim tab so when I cut the pushrod I wouldn't cut off too much - or too little - when shortening it.
I screwed it into the control horn of the tab itself, and marked ti with tape, then layed it on top of the horn on the trim tab. I ran the tab servo in and and out and found the center point of it's total movement. After marking the ends, I cut it with a hacksaw.
Attaching the pushrod lined up very nicely and centered once screwed into place. I did have to file the skin down on the groove to allow full movement of the tab, otherwise it would have rubbed on the skin.
I used a 9 volt battery and held it on the two white wires to test the trim movement. Plane goes up, plane goes down, plane goes up.....
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Marked the push rod for cutting.

Marked the push rod for cutting.

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Screwed into place, and filed the skin for full movement.

Screwed into place, and filed the skin for full movement.

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Testing with a battery.

Testing with a battery.

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