I have flown the RV 10 at Vans Aircraft and I have flown a Alrus 2000 as a flight school rental. The 2000 is a 2 seat version of the CH640. I have sat in the original Zenith owned CH 640 prototype.
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Stating the facts and nothing but the facts. Good and Bad.
The lower rudder skin was bent during shipping. Zenith did offer to replace it. I decided to try to fix it my self. If it didn't work then a ...
The "New Mod" I was referring to is the rear seat is moved back a few inches from the original plans. One of the other builders addressed this, but I don't remember which one.
The original ...