>I would be interrested to know what your elevator position is at cruise if >you have the trim neutral and are holding whatever elevator you need to fly >level. Could you neutralize the trim and somehow mark the stick position >needed for level flight then see what elevator deflection that works out to >when you get on the ground? >Brian Kraut +++++++++++++++++++++++++++++++++++++++++++++++++++++++
Brian, I would have no accurate way of measuring that small of a stick displacement. My stick (dual) is perhaps a bit taller than most KR's but even so the actual displacement of the stick from climbout to cruise is very small. It's more of a pressure change that is felt and relieved with trim than actual stick displacement. If it's drag reduction and speed you're after you will probably want the new airfoil and then all my observations are "out the window" anyway. Mark Langford's KR should be flying this year and he will be able to answer the many KR rigging questions with a lot more accuracy than I can. He has an adjustable H.S. Someone with more knowhow than me might be able to take a computer program and "reverse" engineer the numbers to tell us what angle the H.S. should be. My KR is baciclly plans built with a 24" stretch. The C.G. on the test flight was approx. mid-range. My tab is 4" X 10" and was deflected at an angle in the low 20's as I recall. That will of course beg the question "do we want a perfectly neutral rigging" at cruise or some down force on the tail for stability, at what C.G. range would you want the trim at zero, and does the tab/elevator deflection for trim add more or less drag than the H.S. set at an angle? My guess is that, given all the same components, the whole range of possibilities from one extreem to the other will not make a 3 to 5 mph difference in the outcome. Throw in the new wing and you've changed the game. This is all too much to contemplate! I need a "flight fix"!! :-) Larry Flesner
