Top Flite TOPA0290 - Manual (Page 28)

❏
12.
Use a car
ving knif
e or a r
a
z
or plane to shape
the top of the b
loc
k to match the shape of the wing.
F
ollo
w with a bar sander and 80-g
rit sandpaper
.
Note:
When sanding, hold the bar sander on the end
o
v
er the tip and apply pressure there only
.
This w
a
y,
y
ou w
on’t be sanding the sheeting.
❏
13.
Shape the bottom of the tip to a 45-deg
ree
angle as sho
wn on the cross-section on the plan.
❏
14.
Use prog
ressiv
ely finer g
rades of sandpaper to
final-shape the wing tip and the leading edge of the wing.
B
U
ILD THE
AILER
ONS
Do the left ailer
on fir
st.
Ref
er to this photo f
or the f
ollo
wing eight steps.
❏❏
1.
Cut out the corr
ugations from one of the die-
cut 1/16" [1.6mm] balsa
ailer
on skins
.
This will be
the
bottom
,
left
aileron skin.
Hint:
A single-edge
ra
z
or b
lade w
o
rks best f
or cutting, b
ut is too long.
Use a cut-off wheel to shor
ten a r
a
z
or b
lade so it will
fit in the slots
.
❏❏
2.
P
osition the aileron skin o
v
er the left aileron
plan.
Note that the skin is a little wider (from the front
to the bac
k) than it needs to be
.
Mar
k the leading and
tr
ailing edge where the skin is to be tr
immed.
T
rim the
skin as needed so it fits the plan.
Note:
The skin is
also a little longer than it needs to be
, b
u
t it w
on’t be
tr
immed until later
.
❏❏
3.
Reposition the skin o
v
er the plan.
Mar
k the
locations of the aileron r
ibs that will be glued on later
.
❏❏
4.
Cut a 3/8" x 5/8" x 18" [9.5 x 16 x 460mm]
balsa stic
k to the correct length f
or the
ailer
o
n
leading edg
e
.
Glue the leading edge to the skin.
❏❏
5.
Cut the
contr
ol horn suppor
t
from a lefto
v
e
r
piece of 1/2" x 1/2" x 24" [13 x 13 x 610mm] balsa stic
k (there should be a piece left from the fin leading
edge).
G
lue the hor
n suppor
t into position.
❏❏
6.
Cut sixteen corr
ugation fillers to the length
sho
wn on the plan from a 1/16" x 1/4" x 30" [1.6 x 6.4
x 760mm] balsa stic
k, then glue them into position.
❏❏
7.
Glue the nine die-cut 3/32" [2.4mm] balsa
ailer
on ribs
into position.
❏❏
8.
Glue the 1/8" x 1/4" x 30" [3.2 x 6.4 x 760mm]
tr
ailing edge suppor
t into position.
Be
vel the leading
edge
, the tr
ailing edge suppor
t and the tr
ailing edge of
the aileron skin to match the angle of the aileron r
ibs
.
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