The Edge 540 has been the dominant aircraft in the Red Bull Air Race championship since it first arrived on the scene, shortly after the series had started.  Kirby Chambliss first used the 540 in the 2004 championship and won the series. The next year two people flew in the Edge

By 2007 there were 11 pilots, out of a field of 13, flying in the Zivko. This is because it was...