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 
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