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Bill & Brendas RV-8 QB
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Date:  8-11-2014
Number of Hours:  3.00
Manual Reference:  
Brief Description:  fix wiring for trim indicators. Check auto pilot s

Problem: the pith trim is being indicated on the aileron indicator and the pitch is also reversed ( fwd push on hat switch moves the trom tab down and pitches nose up). Not correct! Im glad I made a rear access door to the instrument panel because this simplified the acces to the indicator wires that I had all zip tied out of the way. I cut the zip ties and then removed the engine monitor and then sat in my seat and cut the shrink tube that covered the wire pins. I simply swapped the three indicator wires from the two indicators ( 6 wires) and swapped them. Checked operation and then heat shrinked new shrink tube on to each connection, That got he pitch and roll trims indications on the correct indicators. Then I had to reverse the pitch trim so that the trim tab moved up when hat switch was pushed forward. This required removing the front seat, seat back, seat pan and then swapping the two white wires in the stick servo. Thjese are the last two wires and by simply unscrewing them and swapping and tighening back up solved the problem. I tested it and then installed everything back as it was..atleast with minamal screws for now.

I then wanted to see if the auto pilot servos were working. This is the first test since install! I pulled N882RV out of the hangar and powered her up electrically. Waited for GPS to find me. enetered a nearby airport and hit direct. Powered on the auto piloy and engaged it for track and alt hold. Seems to be working. I need to read more on testing procedures before I call this good but so far... its looking ok.YAY!
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Removed EMS and swapped the aileron and pitch servo indicator wires

Removed EMS and swapped the aileron and pitch servo indicator wires

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Swapped the last two whire wires from the the pitch servo so as to reverse polarity in correct with sw

Swapped the last two whire wires from the the pitch servo so as to reverse polarity in correct with sw

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Testing the auto pilot. First test

Testing the auto pilot. First test

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