> Is the cg range for Dan Deihl wing skin wings the same as for the > standard KR-2 wings? N880AB's cg falls within the limits for the > standard KR-2, however my KR feels tail heavy. I am unable to > establish a true stall due to the uncontrolled pitching up of the > wings prior to stall. It feels as if the horizontal stab and > elevator are stalling prior to the wings. >Bill Page ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
As others have mentioned, the Diehl skins should have no effect on the C.G. range of your KR. Their only difference,over the plans built wing, is a bit of additional length. Can you give us more info on the stall / pitch-up? Where EXACTLY does the C.G. of your KR fall in relation to the plans? What did you do to recover or did the KR recover on it's own by dropping the nose? Do you know the angle of incidence your wing is set at? Did it require a lot of back stick to hold the nose up to approach the stall? Was the ball centered at the time of "pitch-up"? Consider the following. If it's a CG problem and your KR is tail heavy, the recovery would seem difficult or impossible. If it's nose heavy, and you stalled the HS / elevator, it seems the nose should have pitched down. There are too many variables between KR's to GUESS what your problem might be without additional info. While my KR is stretched 24 inches, the wing and tail are plans built and set to "plans" angles. My KR has a VERY GENTLE stall with complete aileron and elevator control up to and through the stall. I get no wing break off or other unexpected reactions. This seems to be the "normal" stall characteristics for most KR's and how your KR ought to perform. I can understand your wanting to determine the cause before additional testing. When unexpected things happen in a new airplane it can scare the hell out of you. Larry Flesner
