Ron, you wrote: > I didn't get any instructions, could you by chance send me the > instructions? OK...egg all over my face...my apologies...coulda sworn I'd sent these to you! > Enhanced Wing Root Fairing Installation Instructions > > General: > > Familiarize yourself with these instructions before proceeding with > any work. > > The Enhanced Wing Root Fairings (EF) significantly affect the > airflow around the fuselage/wing intersection; great pains have been > taken to ensure that the port and starboard fairings are identical > (opposite hand, of course); maintaining symmetry during the > installation is extremely important, otherwise the aircraft may, at > certain speeds, develop a tendency to roll. > > The Enhanced Fairings are for the Europa XS model fuselage and wing; > they are designed to work in conjunction with the removal of a > portion of the upper Europa stock wing root fairing, a pair of which > are essential. The entire lower portion of the stock fairing is not > altered. > > The Enhanced Fairings have been designed so that a portion of the > upper fairing is bonded into the wing, a portion is bonded to the > flap, and the aft portion is bonded to the fuselage. The forward > portion of lower fairing is bonded to the underside of the flap, and > the aft portion is bonded to the fuselage. Both upper and lower > fairings are marked w/ cut lines. DO NOT CUT into pieces until the > locations of the fairings on fuselage, wing, and flap have been > firmly established with clecos. > > These instructions assume that the wings are attached to the > fuselage and the flaps are in the fully-retracted position. > > Comments in italics within ellipses address issues encountered when > the fairings are being installed on an aircraft which has had the > stock Europa wing root fairings previously installed. > > It is suggested that port and starboard fairings be installed > simultaneously rather than sequentially to create and maintain > symmetry. > > By the act of purchasing these wing root fairings, Purchaser agrees > that Seller make no warranties, express or implied, and specifically > excludes and disclaims the implied warranties of merchantability for > any particular purpose or use. And that all other obligations or > liabilities of Seller in contract or tort, whether under a theory of > negligence or strict liability or otherwise, whether for > consequential or other damages arising out of the sale, use or > installation of these wing root fairings, or otherwise, are excluded > by Seller and hereby expressly waived by the Purchaser. The Seller > is NOT an aerodynamicist, aeronautical engineer, nor an engineer of > any kind. > > > > > STEP 1. LOCATING THE ENHANCED FAIRINGS (EF) > > Measuring from the face of the fuselage outboard along the flap > trailing edge, mark on the flaps a distance of 11 inches. Place the > curvy-pointy mid point of the upper fairing on this mark; secure w/ > a squeeze clamp; this establishes the fore and aft location of the > fairing. It may be done with the Europa stock fairing in place of not. > > STEP 2. > > Establish and mark the centerline of the underside of the fuselage; > establish a point along the centerline which is approximately > aligned with the aft-most end of the upper fairing when it is > clamped as per Step 1. Using a cloth or fiberglas measuring tape, > measure a distance of 14.50 inches from the centerline and mark an > arc on port and starboard sides of fuselage. > > - Alternatively, or as a means of confirming the location of the > point just established, locate the centerline of the top of the > fuselage by establishing a line from the center of the leading edge > of the vertical fin to a point midway between the fore and aft door > recesses. Establish a point on the centerline measuring 36” aft from > the rearmost door recess; from that point, using a cloth or > flexible, flat, metal tape measure, swing an arc of 31.5” along the > side of the fuselage; do this both port and starboard. > > STEP 3. > > With the tailplanes removed, clip a measuring tape in the end of > the tailplane torque tube and at a distance of 52 3/8 inches, mark > an arc on the port and starboard sides of the fuselage. The > intersection of this arc and that established in Step 2 is the > location of the aft most end of the upper fairing. > > - If it’s not convenient to remove the tailplanes, other points of > reference may be used, but care must be taken that the same point > port and starboard is used. If other points of reference are used, > the key dimension will vary, but the critical thing is that symmetry > is established and maintained. > > Note: > > With the Europa stock wing root fairing removed, and with the > Enhanced fairing clamped to the flap, the EF should kiss the side of > the fuselage along its entire length. > > - The dimensions noted above are spot on for N194XS...if for your > installation these dimensions do not seem optimal when fitting the > EF to the fuselage and wing/flap, adjust them accordingly; HOWEVER, > the most important thing is that the dimensions are identical port > and starboard. > > (If the stock fairing is previously installed, the aft-most end of > the EF will tend to be perhaps 1/2 inch lower than the mark of the > intersecting arcs, but can be raised with a little pressure. After > the point of intersection between the Europa stock fairing and the > EF is established, the portion of the stock fairing [along w/ any > filler used to fair the stock fairing into the wing] which conflicts > with the EF must be sanded off down to the original top surface of > the wing.) > > Accomplishing Steps 1, 2, and 3 with care and attention are key to > ending up with the critical symmetry required. > > > STEP 4. > > - With 2 or 3 clecos forward of the wing spar, secure the Europa > stock wing root fairing in place. It’s now time to locate the joint > between it and the EF; up to 1/2 inch of the EF can be trimmed from > its forward-most end; make a clean butt joint. > > (If the stock fairing is previously installed, now is the time to > remove any portion of the stock fairing and associated filler from > the wing which will conflict with the new EF.) > > When you are satisfied with the butt joint between Europa stock > fairing and the EF, and the location of the EF matches up with the > points established in Steps 1, 2, and 3, and you have verified port/ > starboard symmetry, use a minimum of 2 clecos on each of the 3 > portions of the upper EF to secure the EF in place. > > STEP 5. > > Looking at the lower molding of the EF, note the joggle at the > forward end; this joggle is designed to allow the lower EF to tuck > into the trailing edge of the lower portion of the Europa stock > fairing as it terminates just aft of the underside of the wing when > the flap is retracted. Some trimming of the joggle may be required. > > The lower molding of the EF also has a tab which rests on the upper > surface at the trailing edge of the flap which helps to position it. > The aft-most end of the lower molding should match up w/ the aft- > most end of the upper molding. Note also that the lower molding > covers over the slot in the fuselage for the flap control rod, and > when properly placed, the molding should kiss up to the fuselage > along its entire length. > > At the elliptical shape of the EF aft of the flap trailing edge, > the lower molding is sized to extend as much as 1/8 inch beyond the > edge of the upper molding; this will be trimmed after the upper and > lower moldings are bonded together. > > STEP 6. > > When both molds (i.e., upper and lower parts) are exactly where you > want them to be, secure them in place using squeeze clamps and tape. > Note the cut lines on both the upper and lower EF molds. Now, fix > the molds in place on the flap, wing, and fuselage using at least 2 > clecos on each portion...that will be a minimum of 6 clecos for the > upper, and 4 clecos for the lower. Take care to position the clecos > in areas of the moldings which are flat to the fuselage and wing/flap. > > STEP 7. BONDING THE UPPER TO THE LOWER > > Remove the moldings and scuff sand the areas adjacent to the > elliptical curve which will be bonded together; i.e., the elliptical > edges aft of the flap trailing edge on both upper and lower > moldings, and the areas which will be bonded to the wing, flap, and > fuselage. > > Reinstall the fairings w/ clecos and note the condition where the > elliptical edges of upper and lower fairings mate. > > Remove the lower fairing and place a bead of flox along the > elliptical edge and re- cleco in place. Use tape and or sticks to > secure and hold it in place w/ respect to the elliptical edge of the > upper fairing. This edge should be in one plane; sight along it and > adjust tapes or sticks as necessary. Allow to cure. > > > STEP 8. > > Remove fairings and reinforce elliptical edge on the inside w/ > additional flox where necessary and a place a 2 inch wide, 2 ply BID > tape; apply packing tape along fuselage where flox/BID may otherwise > bond...not desirable! Reinstall with clecos. Allow to cure. >