Some one mentioned DECALAGE at one time, Virg On Thu, 30 Mar 2006 08:25:57 -0600 Larry&Sallie Flesner <fles...@verizon.net> writes: > > > > 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 > > > _______________________________________ > Search the KRnet Archives at > http://www.maddyhome.com/krsrch/index.jsp > to UNsubscribe from KRnet, send a message to krnet-le...@mylist.net > please see other KRnet info at http://www.krnet.org/info.html > >
Virgil N. Salisbury - AMSOIL www.lubedealer.com/salisbury Miami ,Fl
