Just happened to notice the Kaos Sticky, and thought you folks might enjoy seeing a Kaos I built in the early 80s. It had an 82" wingspan, weighed about 12 lbs., and flew with a piped 90. What a great flying airplane but a bit heavy. Sorry the photos are so bad but they are old.
I did build two UFOs later, one a 45 size and the second a slightly oversize 60 size.
I missed the big Kaos, and in 2007 built a similar plane that is used for my avatar.
Soon will scratch build a 2 meter Kaos with a slightly thinner wing and powered by a 1.40 ST.