Most of you will probably be familiar with the Peter Powell Stunter, which really popularised dual-line kite-flying in the early 1970s, but things were happening before that! For instance, the Rogallo Wing was invented in the 1940s, and the vast majority of present-day dual-line sport kites can be traced back to this kite. The 1940s also saw the Target kites, invented and designed by Paul Garber. And in the 1930s, a rather strange dual-line box kite, called the Air-o-bian, briefly caused a sensation. Going even further back in time, the late 19th century saw several rescue kites, controlled by two lines.
Because of my interest in these early dual-line kites, I have built reconstructions of Francis Rogallo's Flexikite, and of J Woodbridge Davis' Rescue Star (more on that kite, including a video of it flying, here):
For the new year, I am going to keep my eyes open for early dual-line kites, and especially for those which could be flown in a pair routine. I already talked about my project to build a pair of Target kites, and about trying to find a second Dunford Flying Machine. Two Trlby triple stacks would also work great in a pair routine, and how about a pair of Gayla Baby Bats, converted to dual-line flying as suggested by Richard Radcliffe in 1978? Also, I wouldn't say no to a pair of Cambridge Combat kites, or even to a single one.
We'll see how far I get in this; watch this space in 2013!