AirfoilZ Extra 260 Assembly Manual

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Specifications

Wing Span: 40 inches

Wing Area: 350 in

Fuselage Length: 35.5 inches

Weight (ready to fly): 19 to 23 oz.

Wing Loading: 7.8 to 9.5 oz/ft

Extra 260

Assembly Manual

Version 1.0 – 11/9/07

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Summary of Contents for AirfoilZ Extra 260

Page 1 Extra 260 Assembly Manual Specifications Wing Span: 40 inches Wing Area: 350 in Fuselage Length: 35.5 inches Weight (ready to fly): 19 to 23 oz. Wing Loading: 7.8 to 9.5 oz/ft Designed by Jim Vigani Version 1.0 – 11/9/07...
Page 2: Limited Warranty
© Copyright 2007 all rights reserved Limited Warranty AirfoilZ takes pride in the care and attention given to the manufacture of the components in this kit. The company warrants replacement of any materials found to be defective for their intended...
Page 3: Recommended Power System
Introduction: Thank you for choosing the Extra 260 airplane. We have taken great care to provide a design and kit components that, when properly assembled, will give you a high quality model with outstanding performance. While the assembly is not complicated, the quality and ultimate performance of your model will depend on the care you take while building.
Page 4: Kit Contents
Kit Contents: Before you start the assembly of this model, check to make sure that there are no missing parts and that none of the parts have been damaged during shipment. If you have any questions with the assembly or flying of this model, please contact us and we will be happy to assist you. If you need replacement parts please provide the model name.
Page 5 Figure: General Comments on Assembly: While not difficult to assemble, the Extra 260 kit is intended for persons with some building experience. As such, the instructions are presented as a simple sequence that, when followed, will help ensure that the airframe turns out straight and light.
Page 6: Fuselage Assembly
Depron foam. Graphics: The Extra 260 comes with printed vinyl graphics. Extra care in cutting out and applying the vinyl panels will result in a painted look for your plane. Some people prefer to lightly mist the surface with “Frebreze” before applying the vinyl. This allows the vinyl to be repositioned while applying them.
Page 9 Step 1 Glue the wing root doubler in place with foam safe CA being careful to ensure the wing openings perfect alignment. Tip: Before joining, apply CA to doubler lightly spray kicker on the fuse skin. Step 2 Using the plywood nose doubler as a guide, glue the top front doubler in place with foam safe CA.
Page 10 Step 3 Glue the lower rear doubler in place with foam safe CA. NOTE: The lower rear doubler needs to be positioned 3 mm from the edge of the skin. An alignment tab is provided at the rear of the part to ensure proper alignment.
Page 12 Step 6 Trim front doubler alignment tab flush with upper rear doubler. Repeat Steps 1 to 3 for the other skin assembly making sure to make a LEFT and a RIGHT side version! Step 7 assemble plywood crutch pieces and check for fit.
Page 13 Step 8 Glue the plywood crutch parts landing gear mount parts together with medium CA. Insert foam formers and glue in place with medium foam safe CA. TIP: tack glue the plywood pieces in place with thin CA then re-glue with medium Landing Gear Mount Assembly Glue the plywood landing...
Page 14 Glue the landing gear wire torsion support in place with medium CA making sure the slot in the support aligns with the hole in the landing gear mount. TIP: Insert a piece of 3/32 wire into the hole and use as an alignment guide.
Page 16 Step 10 Test fit the skins on the crutch and check that the slot in the rear of the skin mates with the alignment tab on the rear of the crutch. Step 11 Glue the crutch to one skin assembly from the nose to just behind the wing opening with medium foam safe CA.
Page 17 Step 12 Glue the top rear edges of the fuselage together with medium foam safe CA . Step 13 Test fit the canopy filler piece and glue in place with medium foam safe © Copyright 2007 all rights reserved...
Page 19 Step 15 Glue the top cowl skin in place with medium foam safe CA. Tip: Before gluing, lightly score the backside of the top skin with an old ballpoint pen to allow the foam to be bent around the nose without cracking. Pre- bend the foam before gluing in place.
Page 21 Step 17 Epoxy the motor mount in place making sure it is flush and square with the motor mount support. TIP: Mark the motor mounting hole locations before gluing the motor mount in place. © Copyright 2007 all rights reserved...
Page 22 Step 18 Glue the bottom cowl skin in place with medium foam safe CA. Tip: Before gluing, lightly score the backside of the bottom skin with an old ballpoint pen to allow the foam to be bent around the nose without cracking. Pre- bend the foam before gluing in place.
Page 23 Step 20 Cut a 3” piece off the front of the fuselage lower skin. Save the piece. This front piece will be glued in place after the rudder pull-pull system has been installed. Step 21 Glue the lower fuselage skin position with medium foam safe CA.
Page 24: Wing Assembly And Installation
Step 22 Glue on the ¼” x ¼” tail post with medium foam safe Step 23 Finish the fuselage construction by sanding the edges smooth. Wing Assembly and Installation Assembling the Spar: © Copyright 2007 all rights reserved...
Page 26 Step 25 Repeat for the top spar cap forming the “I beam” shape. Tip: When completed, lightly sand the spar edges to help it slide into the wing. Wing Assembly: © Copyright 2007 all rights reserved...
Page 27 Step 26 Place a mark 2 ” behind the leading edge at each wing tip. Place another mark 3 ” behind leading edge each wing root. Step 27 Glue the 3 mm foam wing alignment tabs in place on the left wing using foam safe CA staying sufficiently away from the spar location mark to...
Page 28 Step 28 Mark the center of the spar and test fit it in the wings. Glue the spar into place with Gorilla Glue or 15-minute epoxy. Align the spar with the spar location marks on the wing panels. Step 29 Repeat for the other wing making sure to align the root...
Page 29 Step 30 Push the wing center joint together making sure the wing root airfoil profile both wings match at the center. Step 31 Carefully sand the wing tip profile and spar end to remove any irregularities. Glue the wing tip caps onto the wing using foam safe CA and foam safe kicker.
Page 30 Step 32 Trim and sand the wing tip to final shape. Step 33 Cut a ½” diameter hole in the lower wing skin along the wing centerline, just behind the spar for use as an exit for the servo leads. Wing/Fuselage Assembly: ©...
Page 31 Step 34 Test fit the wing in the fuselage. FORCE! If the fit is tight, sand fuselage opening to fit. Make sure the wing is centered on, square fuselage. With the wing properly aligned, tack glue it in place with medium foam safe CA.
Page 32 Step 36 Using the end of the 3/16” diameter carbon elevator joiner, gently create shallow grove elevator joiner cutout. Step 37 Secure the 3/16” diameter carbon elevator joiner in place with epoxy. Tip: For a lighter joint, a mixture of minute epoxy micro balloons can be...
Page 33 Step 38 Cut out the foam bridge behind the wood joiner, between the elevator halves. Installing the Horizontal Stabilizer Spar: Step 39 Glue the ¼”x¼” balsa horizontal stabilizer spar rear horizontal stabilizer Assembling and Installing the Horizontal Stabilizer and Elevator: ©...
Page 34 Step 40 Using sanding block, bevel the leading edge of the elevator as shown allow movement elevator when hinged. Step 41 Temporarily secure elevator stabilizer with tape. Mark the position of elevator hinges with strips of ” wide painter’s tape. Use 3 hinges on each side of the elevator.
Page 35 Step 42 Cut the tape along the hinge line and remove the elevator. Step 43 Using your Exacto knife, carefully cut a slit along centerline of both the stabilizer and elevator at each hinge location. Test fit the hinges into the slits.
Page 36: Rudder Installation
Step 44 Test fit the stabilizer in fuselage check that fits square to the fuselage and wing. Remove the stabilizer insert elevator fuselage slot. Insert stabilizer position, making sure it is square to the fuselage and the wing. Glue the stabilizer in place with medium...
Page 37 Step 46 Using the sanding block, bevel the leading edge of the ailerons as shown to allow for movement of the ailerons when hinged. Step 47 Temporarily secure the ailerons to the wing with tape. Mark the position of the aileron hinges with strips ”...
Page 38 Step 48 Cut the tape along the hinge line and remove the ailerons. Using your Exacto knife, carefully slit along centerline of both the aileron wing trailing edge each hinge location and glue the hinges in place NOTE: that the wing has a glue seam along the centerline of the trailing edge.
Page 39 Step 50 Test fit the servos in the holes. Mark the location plastic servo mounts and remove the servos. Glue the servo mounts in place with foam safe CA. Drill a 1/32 inch diameter pilot hole in the servo mounts each servo mounting lug location.
Page 40 Step 51 Sand the edges of the 1/32” plywood control horn parts to remove the edge caused by the laser cutting. Slide all the pieces together and then run some thin CA along the horn edges and in the joint between the horn and support.
Page 41 Step 52 Mark the location of the control horns on the control surface and cut a slit in the control surface with an Exacto knife accept control horn mounting tab. © Copyright 2007 all rights reserved...
Page 43: Landing Gear Installation
Landing Gear Installation: Step 54 Solder a #2 washer on the landing gear. as an inner wheel retainer Tip: Drill a 3/32” hole in a scrap block of wood to use as an alignment tool. Lightly sand the axel washer ensure good bonding of the solder.
Page 44 Completed wheel installation Step 56 landing gear wires into the slots in the landing gear mount. Tip: Round the corners of the slots so that the wires fit flush to the mount surface. © Copyright 2007 all rights reserved...
Page 45 Step 57 Secure the landing gear mount cover in place with screws provided. Step 58 Tie the wire tailskid to the plywood mount with unwaxed dental floss or thin wire. Secure with CA. Attach the plywood tailskid mount to the rear fuselage using foam safe CA or...
Page 46 Step 59 Secure the wing servos in place with the servo mounting screws provided with servos. Do not over- tighten the screws as you may strip the screw holes. Step 60 Route the aileron servo leads through the interior of the wing, and out through the exit hole.
Page 47 Step 61 Install the 2-56 threaded rod aileron push rods, securing at both ends with the nylon clevises provided. Bend the rod as appropriate to maintain torsion free geometry. © Copyright 2007 all rights reserved...
Page 48 Elevator Servo Installation: Step 62 Securely glue elevator servo mounts in place with medium foam safe CA. Step 63 Install elevator servo servo mounts outside fuselage. Pre-drill the screw holes with 1/32” drill before installing the screws. Do not over-tighten the screws as strip the screw holes.
Page 49 Step 64 Install the 2-56 threaded elevator push rod securing at both ends with the nylon clevises provided. Bend the rod as appropriate to maintain torsion free geometry. Rudder Pull-Pull System Installation: Step 65 Cut 1/8” wide exit slots for the pull-pull rudder control wire in the fuselage sides ©...
Page 50 Step 66 Secure the rudder pull-pull cord on the rudder servo control horn using provided metal sleeves. TIP: Slip the control line through the tubing, then through the control horn, and back through the tube. Squeeze tube with some pliers to flatten it, and then add a drop of thin CA at the end of the tube away from the control horn.
Page 51 Step 69 Install the 3” section of the fuse bottom that trimmed off in Step 20. TIP: An access hole can be cut for access to the servo horn if desired. Step 70 Mount the motor using #2 wood screws and washers.
Page 53 Step 73 Mount the battery with Velcro strips inside the fuselage shown. Loop a Velcro strap through the slots in the lower crutch to secure the battery in place. Step 73a Velcro strips inside the fuselage on the bottom crutch. ©...
Page 54: Preflight Checklist
Step 73b Velcro strip battery. Pre-flight checklist Balancing: We recommend that you perform initial flights with the CG 3¾ to 4 inches behind the leading edge at the wing root. Adjust the CG to get the flight characteristics that suit your taste. Electrical Components: Check that all electrical components are securely attached and the all plugs are fully seated.

AirfoilZ Extra 260 Assembly Manual

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