As you might know by now, I owned an RV4 for several years. I rebuilt the plane from almost the ground up. I have pictures on this site of the finished product. I very much enjoyed the occasional loop or roll, and often had alot of fun flying formation with my father's RV6, also pictured here on this site. In fact, my father and I flew formation from San Diego, CA to Palm Beach, FL. For those that are wondering how long that took, 15 hours of formation flight. And it was fun all the way!
Here is a nice treat that I found of an RV4 in formation and dogfighting with a Pitts. Hope you enjoy! (click here)