Top Flite TOPA0290 - Manual (Page 46)

.
❏
4.
Use a 1/8 [3.2mm] dr
ill bit or a br
ass tube
shar
pened on the end to dr
ill a hole into the r
udder f
o
r
the torque rod.
❏
5.
Use a 5/32" [4mm] br
ass tube shar
pened on the
end or a hob
b
y
knif
e to cut a g
roo
v
e
f
o
r the torque
rod and the n
ylon bear
ing.
T
est fit the torque rod and
the bear
ing to the r
u
dder
.
❏
6.
Cut a hinge slot in the fin f
o
r the bear
ing, then
test fit the r
udder and the bear
ing to the fin.
Mak
e
adjustments where necessar
y f
or a good fit and
smooth oper
ation.
Separ
ate the r
udder from the fin
and tak
e out the torque rod.
❏
7.
Mount the r
udder ser
v
o
the same w
a
y y
o
u
mounted the stabiliz
er ser
v
o
.
Cut another pushrod to
a length of 27" [685mm], then thread on a n
ylon
cle
vis
.
Inset the pushrod through the r
udder guide
tube from the bac
k of the fuselage
.
❏
8.
Inser
t the torque rod into the fuselage
, then set
the fin into position and inser
t the bear
ing into the fin.
Join the r
udder
.
Connect the cle
vis on the r
udder
pushrod to the torque rod hor
n.
Mo
v
e
the pushrod
bac
k and f
o
rth to chec
k the oper
ation.
Mak
e
adjustments where necessar
y.
❏
9.
The fin
could
be glued into position at this time
,
b
ut similar to the stabiliz
er
, it will be easier to apply
the co
v
e
ring str
ips do
wn in the corr
ugations first.
Apply the corr
ugation str
ips at this time
.
If duplicating
the tr
im scheme on the kit bo
x co
v
e
r, apply the white
str
ips first with o
v
er
lapping metallic red str
ips as
sho
wn.
Note the co
v
e
ring guidelines lightly penciled
directly onto the fin.
❏
10.
Glue the fin into position using 30-min
ute
epo
xy mix
ed with milled glass fibers or microballoons
to thic
k
en the mix to k
eep it from r
unning.
Sim
ultaneously glue the r
udder torque rod bear
ing
into the fin.
Use a b
uilder’
s square to mak
e cer
tain
the fin is per
pendicular to the stabiliz
er bef
ore the
epo
xy hardens
.
Use the line dr
a
wn on the tr
ailing
edge of the fin as an alignment cue
.
- 46
-