HAHAHAHA, you brought up my point exactly. Isent a set of the plans to my friend and building buddy in NY a couple of years ago and he built one right away. He has been on me for years now to build one, I said why bother, I already have a Kaos.
By the way, they are the Bridi Kaos, Tower just got the rights to have them made, Tower used to even sell the 60 size and the 40 in kit form. Just a point of intrest.
The DR was designed for higher wind conditions and flew in 1966, the Kaos was designed in 1970 and won the Nats three times, the DR only once.
The DR is also shorter coupled and the tail feathers are different shaped. Until I fly the two of them one after the other I'm not sure how much different they will be.
You will also notice that all the classic pattern planes look very similar in design and shape.
One other thing, they all fly beyond great!!
Take a little peek at the Ultra Sport, take note of the wing and stab shape then figure out whaer it came from. The US has a much better fuse shape though.
Next time Ihave the Kaos and DR side by side Iwill try to remember to take a photo of them together, you will notice a lot of little diffenences.