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WarbirdKits Boulton Paul Defiant Mk I Construction Manual

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Boulton Paul Defiant Mk I
Manual Version 2.1 – January 2011
Scale: 1/15
Wingspan: 31.3 Inches
Area: 150 Square Inches
Power: 2408 Brushless
Original Design by David Collins

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Summary of Contents for WarbirdKits Boulton Paul Defiant Mk I

  • Page 1 Boulton Paul Defiant Mk I Manual Version 2.1 – January 2011 Scale: 1/15 Wingspan: 31.3 Inches Area: 150 Square Inches Power: 2408 Brushless Original Design by David Collins...
  • Page 2: Parts List

    Boulton-Paul Defiant Construction Manual Glue the lower wings skins W1 thru W4 together. Sand both sides smooth now. Do not glue the center and outer panels together. ARTS The builder will need to provide the following parts: / ” ” X ”...
  • Page 3 Boulton-Paul Defiant Construction Manual Lay down waxed paper and pin the center section sheeting to a flat Glue the rib doublers W5A to each side of the center rib as shown. su fa e. Ne t glue the / / ” leadi g edge to the f o t edge. Sand everything flush and smooth and try to get a bevel on the bottom sheeti g t aili g edge to a out / ”...
  • Page 4 Boulton-Paul Defiant Construction Manual Follow the same steps to build the outer wing panels. Be sure to build a When the outer panels are finished pin the center section down followed by the outer panels. Blo k up the oute / ”...
  • Page 5 Boulton-Paul Defiant Construction Manual Bend the other end of the wire / ” as sho . Make a left a d a ight Cut 4 each 1/2” lengths and 4 each 1/4” lengths of 1/16 aluminum or plastic tubing (not included). side.
  • Page 6 Boulton-Paul Defiant Construction Manual Glue a 1/4" pie e of tu i g o to the aile o . Do ’t glue any of the tubes Sheet the oute pa els ith / ” alsa. to the wire! Cut the ailerons free from the underside. Sand the wing and aileron Sheet the top of the e te se tio ith / ”...
  • Page 7 Boulton-Paul Defiant Construction Manual Use a scrap of / ” i e to ake a hole i a st ip of / ” alsa. Glue the Hi ge the aile o s to the i g usi g / ” st ips of CA hi ge. strip to the aileron using the wire as a guide as shown.
  • Page 8 Boulton-Paul Defiant Construction Manual Glue s ap / ” t ia gle to the i side o e s of the fi e all as sho Glue 1/4" balsa triangle to the aft bottom edges of the fuselage sides and bevel the tail ends as shown.
  • Page 9 Boulton-Paul Defiant Construction Manual Glue the other fuselage side in place. Glue the battery box / F1 into the fuselage. Glue F1 to the battery box keeping it square. Glue F6 flush to the top of the fuselage sides. Version 2.0 Page 9...
  • Page 10 Boulton-Paul Defiant Construction Manual Glue scrap balsa to the underside of F6 to support it. Laminate two F14 pieces together and glue in place. Glue some scrap 1/4" triangle into the inside corners for reinforcement. Glue F9 in place. Glue F5 in place and glue the fuselage sides together at the rear. Version 2.0 Page 10...
  • Page 11 Boulton-Paul Defiant Construction Manual Glue a / ” do el i to the i g the fit the wing to the fuselage. Glue F3 to the front edge of F6. Glue 1/8 x 1/4" balsa strip in the former slots as shown. Square up the wing then drill and tap the hole for a 4-40 mounting bolt Glue F to the ea fo...
  • Page 12 Boulton-Paul Defiant Construction Manual Cut so e / ” alsa sheet to the shape shown. See the pattern on the When they are dry, trim and glue the sheets in place. plan. Trim the sheeting using the canopy and turret to get the shape right. Glue the / ”...
  • Page 13 Boulton-Paul Defiant Construction Manual Wet, ap, a d glue the / ” sheeti g to the otto of the ose Sheet the bottom of the fuselage ith / ” alsa. Plane and sand the section. corners to a nice rounded shape. Install the elevator pushrod.
  • Page 14 Boulton-Paul Defiant Construction Manual Remove the mount from the motor and attach it to the firewall, Glue the wing fillets to the fuselage. Don’t glue to the wing! centering it on the hole. Shape the wing fillets as shown. Mount the motor and cowl using small screws into scrap hardwood blocks as shown.
  • Page 15 Boulton-Paul Defiant Construction Manual Mou t the aile o se o, flatte so e / ” NOTE: The tu et pa ts ha e ee e ised. Use o l the tu et pa ts o the ” ass tubing and drill a hole ”...
  • Page 16 Boulton-Paul Defiant Construction Manual Glue the turret parts together. Make gun barrels from coffee straw and Glue the two F11 parts and F10 together. DO NOT glue the assembly to mount after the turret is finished in place on the fuselage. Note that this photo the fuselage until after covering.
  • Page 17 Boulton-Paul Defiant Construction Manual Version 2.0 Page 17...