lml@lancaironline.net Mailing List Archive

<<<<<<<<<<<<<<<<--->>>>>>>>>>>>>>>> << Lancair Builders' Mail List >> <<<<<<<<<<<<<<<<--->>>>>>>>>>>>>>>> I am in the process of installing the winglets for my IV-P. The process has been going, shall we say, less than smoothly. Hopefully I get some help from your experience. 1. The instructions I received a week or so ago with the winglets have a revision date of 2/21/96. The instructions I received in "Manual 1 - Fastbuild kit assembly" has a more recent revision date of 2/01/98. One difference between the two versions is the addition of a "paper template" (page 2-21) in Rev. 2/01/98 which, I assume, is intended as a guide in verifying the trailing edge dimension in relation to the wing. I did not receive this. Q: Has anyone received this template and is it necessary? 2. I see no way of maintaining the leading edge dimension of 12.5" from the wings (page 2-21) and also maintaining a "perfectly" straight, continuous edge for the leading edge for the wing and winglets. It appears that approximately 1/4 to 3/8" of an inch would have to be removed from the 12.5" dimension of the winglet joggle to achieve that condition. I should also point out that there appears to be a slight change of angle of the leading edge of the wing in the last few inches from the outboard edge. If this angle is used and not the major portion of the wing leading edge, the winglet is closer to being in line. However this angle chance may be an inconsistency in the wing mould and not a deliberate design feature. Q: Has anyone experienced this same situation. If so would it be better to reduce the 12.5" dimension or have the winglet slightly (a degrees or so) out of parallel with the leading edge of the wing? (the standard wing tips are looking better every day) Thanks you help Joe Trepicone LML website: http://www.olsusa.com/Users/Mkaye/maillist.html LML Builders' Bookstore: http://www.buildersbooks.com/lancair Please send your photos and drawings to marvkaye@olsusa.com.