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RV7 Rudder
My RV flies fine except the ball is about 1/2 out of the cage. I have to fly with constant right rudder to keep it straight. Its not a big deal but on long flights my leg gets tired. My Husky has a trim tab to correct the problem and the RV does not. Whats the best way to deal with it ? I don't want to add a trim tab as it will look like ****.
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Most RVs have a trim tab. Nobody is going to care except you. Some guys have added a trim system to the rudder cable (I don't know the details), others have made a moveable tab with a servo to move it. Do you happen to know Keith at Grass Valley? Maybe he can help. Good luck.
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Gear Fairing Alignment is really sensitive!
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Full disclosure, I also am progressing with a heavy wing correction, and moved 3 of 4 of the aileron hinges at the same time. I must have neutralized the changes as it still had about the same left heavy, so I don't think it had anything to do with the rudder issue. In a dark hangar I might just tweak the gear fairings another 1/32" on the TE to avoid a rudder wedge. :eek: |
The manufactured plastic trim tabs painted to match and installled with professional double faced tape is not bad looking.
Trim tabs are very common on RV's. |
The hanger gremlins must of have visited my hanger in the past year. I've been flying my -7 for over 4 years now and the first 3 years I flew it, there was no need for rudder correction in cruise. Over the past year or so I can definitely see a need for about a 1/4 ball of R Rudder. It's very strange.
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I had the same problem on my -6. I installed rudder return springs on both my -7 and -6 mainly to keep the slack out of the cables. I found that on my -6 that if I used a slightly tighter spring on the right rudder cable it would compensate for the need for right rudder in cruise, sort of a rudder trim. Served the same purpose as an external tab, worked great.
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Rudder tab
Clear silicone will attach a modest tab on your rudder and it can be easily removed.
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Mine was the same. I simply used my hands to tweak the rudder trailing edge very slightly. Took a couple iterations (went too far at first) but it now flies straight in cruise and requires less right rudder in climb. You would not know by looking at it that I did anything.
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Thanks for the info
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Rudder
Pull the wheel pants and fairing and go flying. If she fly straight without need for rudder pedal then the problem is misaligned fairings and/ or wheel pants. I just went through this so I know of what I speak.
Robert |
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