triangular strips to base of Fin and glue Fin to
Tailplane ensuring it is perpendicular and
square
. If, when glue has set, it is not quite
perpendicular to the Tailplane then slice the
triangular strip on the acute angle (leaning
towards) side and insert a thin cardboard
wedge to correct any inaccuracy. Superglue
wedge in place.
15. Glue Tailplane in place checking that it is both
horizontal and the distances between hinge
corners on tailplane to centre of F2 are equal.
16. Fit Rudder and Elevator servos.
17. Cut Mylar Hinges to size (12mm x 25mm). Trim
corners to stop them digging in and roughen
gluing surface with wet & Dry.
18. Hinge Rudder and Elevator control surfaces.
Do NOT glue until the model is covered.
Building the Wings
1. To protect the plan cover in either thin
polythene or cling film.
2. Join front & back 1.5mm sheeting. Use metal
straight edge to trim for a good joint. The
sheeting has been Laser cut but may require
further trimming due moisture changes in the
wood. Sellotape them together along the joint.
Hinge joint back and insert PVA glue. Place on
flat surface and wipe away excess glue. Run
Sellotape along top of joint. Weight down until
glue set. Repeat for other three pieces.
3. Accurately align bottom sheet on plan and pin
to plan. Note rear of sheet overhangs rear spar
by 1.5mm.
4. Accurately mark position of mainspar on
bottom sheet and using a straight edge glue
and pin mainspar in place.
5. Elevate underside of sheeting at front and rear
with scrap to conform with airfoil profile.
6. Omitting W1 glue wing ribs in position.
7. Glue 6mm strip to front of Mainspar 1mm from
the top. Ensure that it is a snug fit between the
ribs.
8. Glue
together
Wing
Servo
Mount
Assembly
using
PVA and
before
glue sets
fit mount
into servo
bay between W4&5. Consult plan as they are
handed i.e. there is a left and right hand! Push
sides of servo mounts against W4&5 to make
bay ribs use servo mount for
swept
1.5mm ply wing braces.
rvo bay and ribs to
aid final servo installation.
David Plane and large flat sanding
t let it overlap and trim
.
18. When glue is set remove Sellotape.
ge
ing Wing Tip as a
reference. Check for twist.
good gluing contact.
9. Using guide lines on plan glue ribs in place. For
the servo
alignment.
10. Build second Wing.
11. Trim and align root end of each wing panel.
Note the mainspars are straight and not
in either direction. Glue panels together.
12.
Glue 0.8mm ply servo lead exit support
washers in place and
13. Fit W1A/B sub-ribs.
14. Thread a string through se
15. Plane / sand wing sheeting back to ends of ribs
using
block.
16. Place Sellotape along sheeting edges to collect
surplus glue. Tip: Do not try to align Sellotape
with edge of sheet bu
with a sharp scalpel.
17. Fit 1.5mm top sheeting taking care to ensure
that it is making contact with both the wing ribs
and the mainspar. Tip: Use masking tape to
help support sheeting whilst glue sets
19.
Carefully plane/sand both rear spar and
leading edge to shape.
Tip:
when using David
Plane set blade at slight angle so that the cut is
thinner on one side of the plane. It helps
king care to align tip end rib with
control thickness of cut.
20. Glue 0.8mm ply end ribs to balsa tips. Again
there is a Left & Right! Roughly shape and glue
tip in place ta
wing end rib.
21. Sand wing tips to shape.
22. Fit centre section trailing edge.
23. Shape Ailerons and cut to length. At this sta
do not make allowance for 0.8mm ply ends.
24. Tape ailerons in position us
Summary of Contents for Wallaby Mk2
Page 4: ......
