NetHeads, It occurred to me that some folks on the list may not get the biggest difference between the KR2 and the KR2S. It's mostly about the extra length. The longer the plane, all other things being equal, the more stable the plane will be in the pitch axis, and the easier it will be to keep the CG in the stable range. There's a reason arrows are long and skinny. You don't see the serious archery professionals show up at meets with short stubby arrows as their secret weapon!
That's not to say that you can't build a KR2 with the CG range located in the proper place, but the range will be narrower, and things like header tanks (which move your CG dramatically as you fly) have a larger effect. And in the case of the header tank, your CG moves aft, so when you land your plane is the least stable that it will be during the entire flight. Adding a passenger has a larger effect on CG as well, moving it aft. One common misconception is that the KR2S is wider than the KR2...they are exactly the same width. There's 2" more of leg room in the S, and the tail is stretched one bay (14"), but the width is the same. The larger canopy makes a big difference in comfort, however. Having said that, it's highly recommend that it be built at least 3" wider if you're what passes for a normal sized human these days. There are more of my rantings at http://www.n56ml.com/kopinion.html . I need to update some of it, but it's still pretty close to the mark... Mark Langford ML at N56ML.com website at http://www.N56ML.com --------------------------------------------------------