Top Flite TOPA0290 - Manual (Page 36)

Finall
y
,
it’
s time to star
t gluing on f
ormer
s.
W
e
’ll
star
t with the bac
k and w
o
rk our wa
y f
orwar
d.
Here’
s a photo of what the bottom of the
fusela
g
e
looks like when it’
s par
tiall
y framed-up.
Y
ou can use this photo as a ref
erence as y
o
u
perf
orm the f
ollo
wing se
veral steps.
❏
13.
T
est fit, then glue f
o
rmers
7B
through
12B
and
the bottom stabiliz
er mounts into position.
Be cer
tain
all of the f
o
rm
ers are v
e
rtical and accur
ately align
with their position on the plan.
Note:
T
wisted f
o
rmers
will simply be str
aightened when the str
ingers are
added later
.
Note
:
Be cer
tain the pushrod holes in
the f
o
rmers align with the pushrod holes sho
wn on
the plan.
❏
14.
Star
ting from the aft end, fit, b
ut do not glue
fo
rmers 6B through 2B and both fuselage doub
lers to
the assemb
ly
.
Be cer
tain that the fuselage doub
ler
y
ou cut ear
lier will be on the
right
side of the
fuselage—remember
, the fuselage is being b
uilt
upside-do
wn, so the r
ight side is the side nearest us
in the photos
.
Note
:
Be cer
tain that 3A f
aces f
orw
ard
as sho
wn on the plan.
❏
15.
Glue f
o
rmer 4B and the fuselage doub
lers—
only in the area of 4B—to the fuselage spars
.
❏
16.
Proceed b
y
gluing the remaining f
o
rmers
(e
xcept the fire
w
all) and the fuselage doub
lers into
position.
As y
ou proceed, bo
w the fuselage doub
lers
outw
ard betw
een the f
o
rm
ers so the
y align with the
fuselage main spars and glue as y
ou go
.
❏
17.
Glue the fire
w
all into position with 30-min
ute
epo
xy
.
Use clamps
, large
T-pins or whate
ver means
necessar
y to hold the par
ts together and k
eep the
fire
w
all in alignment until the epo
xy hardens
.
#2 x 1/2"
[13mm] scre
ws ma
y also be used to help hold the
fuselage sides to the fire
w
all.
Tighten the scre
ws
securely so the heads sink par
tw
a
y
into the doub
lers—
the scre
ws will be per
manent.
❏
18.
Cut both 3/16" x 24" [4.8 x 610mm] g
ra
y
pushrod guide tubes to the length sho
wn on the plan
for the stabiliz
er and r
udder
.
Roughen the outside of
the tubes with coarse sandpaper
, then slide them
into position, b
ut
do not glue
.
❏
19.
Use the remainder of the 3/8" x 3/8" x [9.5 x
9.5mm] bass
w
ood stic
k lefto
ver from the aileron ser
vo
mount f
or the bottom of the fuselage across the
doub
lers
.
Glue the stic
k into position and sand the ends
e
ven with the doub
lers
.
❏
20.
Cut and glue se
v
en 3/16" x 3/16" x 24" [4.8 x
4.8 x 610mm] balsa str
ingers into the notches in the
fo
rmers in the aft end of the fuselage
.
A
n
y
f
o
rmers
that are twisted can be dr
a
wn into position as the
str
ingers are glued to them.
N
o
w
glue the pre
viously-
installed guide tubes to the f
o
rmers
.
❏
21.
Glue in the die-cut 1/8" [3.2mm] plyw
ood
fuel
tank tra
y
.
(The tr
a
y
can be seen in f
ollo
wing photos
.)
- 36
-