Top Flite TOPA0290 - Manual (Page 49)

❏
3.
Sheet the top of the fuselage o
v
er the fire
w
all
and 2T with lefto
v
er 3/32" [2.4mm] balsa sheeting.
Be
v
el the edges of the sheeting e
v
en with the
str
ingers
, then finish the top of the fuselage b
y
gluing
on lefto
v
er 3/8" x 3" [9.5 x 75mm] balsa sheets f
or the
fuselage cor
ners
.
U
se a r
a
z
or plane or a hob
b
y
knif
e
follo
w
ed b
y
a bar sander to round and shape the
cor
ners e
v
en with the side and top sheeting, b
u
t
remo
v
e
as little mater
ial as possib
le as final shaping
will be done when fitting the co
wl and cabin top
.
A
lso
sand the sheeting and cor
ner b
loc
ks e
v
en with the
fire
w
all and 2T
.
MOUNT THE
CABIN T
O
P
❏
1.
Cut f
o
ur 1/2" [13mm]
cabin mounting b
loc
ks
from
the 1/4" x 1/2" x 3" [6.4 x 13 x 75mm] plyw
ood stic
k.
❏
2.
T
est fit, then use 30-min
ute epo
xy to glue the
b
loc
ks into position where sho
wn on the plan.
❏
3.
Glue together both halv
es of the die-cut 1/8"
[3.2mm] plyw
ood
cabin frame
.
T
empor
ar
ily slide the
fuel tank out of the w
a
y or remo
v
e
it altogether
, then
position the cabin fr
ame on the side str
ingers in the
fuselage
.
Accur
ately center the cabin fr
ame from
side-to-side
.
Use small clamps or masking tape to
hold the cabin fr
ame in place
.
❏
4.
Dr
ill 1/8" [3.2mm] holes through the cabin fr
ame
and the cabin mounting b
loc
ks
.
After y
ou dr
ill each
hole tempor
ar
ily inser
t a 4-40 x 1/2" [13mm] soc
k
e
t
head cap scre
w
.
❏
5.
Enlarge the holes in the cabin fr
ame
onl
y
, with
a 9/64" [3.6mm] dr
ill bit.
Inser
t 4-40 b
lind n
uts into
each hole on the top of the fr
ame (
see
the photo at
step 7).
P
er
manently secure the b
lind n
uts with a f
e
w
drops of thin CA.
Allo
w to fully harden.
❏
6.
If installing the scale coc
kpit inter
ior
, cut the
cross br
ace
from the top of f
o
rm
ers F3, F4 and F5.
❏
7.
Mount the cabin fr
ame to the fuselage with the
soc
k
et head cap scre
ws and #4 w
ashers
.
- 49
-