Now that you have a good POV on a Kaos, let me tell you it's drawbacks.

First, you have to build it light. If you have a kit, it will be a little on the heavy side. A kit that size pays little attention to wood weight, so don't go crazy with it. Sand sand sand, and use glue wisely. If it's heavy, it'll tip stall fairly easy when you slow it down. You'll have to land it like an F-104.

Secondly, it doesn't have a lot of rudder authority. It's adequate for sport flying I suppose, but wouldn't take you much past sportsman in pattern.

It requires a good bit of mixing to the rudder, which most non pattern planes do. it will do knife edge, but it's work. The side area isn't quite enough for me.

It WILL snap and spin nicely, and tracks ok if you keep the speed up and have the engine thrust correct. If you build it by the plans, you'll have to tweak the thrust. It was made to fly fast, so fly it fast.

It has flat tail surfaces, which makes it a little geeky to lock in and fly straight. Again, speed and power are your friends.

Vertical with a 60 with which size Kaos? The 40 or 60 size? With a 60 on a 40 size, it'll be plenty...we're talking rocket. A 60 on a 60 size, it depends on the particular 60 and how much it weighs. Any rolls in the vertical and it'll choke fairly quickly.

Now take all of this with a grain of salt. I'm a self admitted plane snob, I'm as picky as they come. You won't have any problem finding people that tell you how great this plane flies, and they're right, compared to the average sport plane. So if you're just looking for a sport plane to bore holes in the sky with, then a Kaos can't be beat. If you're looking for any more than that, keep looking, a CA Widebody 60 would kick it's tail in every department and isn't that much more expensive. The Kaos is an OLD design, and flies like it.

I've had quite a few of them, and wasn't unhappy with any of them until I began flying pattern, in which case it only took me a week before I said to myself "this sucks, I need a better plane! Those old guys were full of it!" (I'm 37 BTW, not a kiddie )

So, I may be the only one to say it's not all that and a bag of chips, because everyone has been saying "a Kaos is great" for so long it's like a mantra or something. Times change, designs improve, and it's dated. I suppose to some people an old converted high wing free flight drone from the 30s flies good too, but that doesn't mean I want one

-Mike