Charter
4
Parts List - basic wing structure
Part No.
Description
Material
Dimensions
No. off
F 1
Root facing rib
Poplar ply
3 mm
Laser-cut
2
F 2
Rib
Poplar ply
3 mm
Laser-cut
2
F 3
Rib
Poplar ply
3 mm
Laser-cut
2
F 4
Rib
Poplar ply
3 mm
Laser-cut
10
F 5
Rib
Poplar ply
3 mm
Laser-cut
2
F 6
Rib
Poplar ply
3 mm
Laser-cut
2
F 7
Rib
Poplar ply
3 mm
Laser-cut
2
F 8
Rib
Poplar ply
3 mm
Laser-cut
2
F 9
Tip rib
Poplar ply
3 mm
Laser-cut
2
F10
Tip block
Balsa
8 mm
Laser-cut
2
F11
Spar web
Poplar ply
3 mm
Laser-cut
2
F12
Servo plate
Poplar ply
3 mm
Laser-cut
2
F13
Aileron hinge spar
Poplar ply
3 mm
Laser-cut
2
F14
Bottom trailing edge sheeting
Balsa
1.5 mm
Laser-cut
2
F15
Top trailing edge sheeting
Balsa
1.5 mm
Laser-cut
2
F16
Top / bottom centre section sheeting
Balsa
1.5 mm
Oversize
2
F17
Bottom leading edge sheeting
Balsa
1.5 x 85 x 740
Oversize
2
F18
Top leading edge sheeting
Balsa
1.5 x 85 x 740
Oversize
2
F19
Aileron
Balsa
Shaped
2
F20
Wing dihedral brace
Spruce
12 x 12 mm
Overlength
1
F21
Wing locating peg
Beech
5 mm Ø
Overlength
1
F22
Leading edge
Balsa
8 x 8 mm
Overlength
2
F23
Spar
Balsa
5 x 8 mm
Overlength
4
F24
Aileron spar doubler
Balsa
8 x 8 mm
Oversize
2
F25
Aileron hinge
Nylon
6
F26
Hinge peg (toothpick),
N.I.
Beech
2 mm Ø
12
F27
Servo extension lead,
N.I.
2
Building the model
Stage 1, basic wing structure
Preparation
- Separate the plywood ribs F1 to F9 from the parent
sheets, and clean up the cut edges with glasspaper.
- The bottom leading edge sheeting F17 is supplied oversi-
ze; cut it to approximate size at this juncture.
- Tape the wing plan down on the building board and cover
it with clear plastic film.
No.
3181
Assembly and operating instructions
- The instructions describe the construction of one wing
panel. The second panel is assembled in exactly the same
way.
- Use cyano for all joints in this stage unless stated other-
wise.
Basic wing construction
Fig. 1
- Pin down the bottom leading edge sheeting F17 and the
bottom trailing edge sheeting F14.
Fig. 2
- Glue the bottom wing spar F23 to the bottom sheeting
panel F17 as shown in Section A-A. Check that the spar
is exactly straight. Place the rib F3 on the spar.
Figs. 3 and 4
- Glue the ribs F4 -F9 in place at the positions shown on the
plan; the ribs must be at right-angles to the building
board.