46
T
A
KEOFF
Bef
ore y
o
u get ready to tak
eoff
, see ho
w the model
handles on the g
round b
y
doing a f
e
w pr
actice
ru
n
s
a
t
lo
w speeds
on the r
unw
a
y.
If necessar
y,
hold a small amount of
“do
wn”
ele
v
ator to k
eep the
nose wheel on the g
round.
If necessar
y,
adjust the
nose wheel so the model will roll str
a
ight do
wn the
ru
nw
a
y
—if y
our r
udders and nose steer
ing ser
v
o
s
are connected to diff
erent channels in y
our receiv
e
r
(and are electronically mix
ed), y
ou should be ab
le to
do this with one of the dials on y
our tr
ansmitter
. If y
o
u
need to calm y
our ner
v
e
s bef
o
re the maiden fl
ight,
shut the engines do
wn and br
ing the model bac
k into
the pits
. T
op off the fuel, and then chec
k all f
asteners
and control linkages f
o
r peace of mind.
Remember to tak
eoff into the wind.
When ready
,
point the model str
a
ight do
wn the r
unw
a
y.
Gr
adually
adv
ance the throttle and use the r
udders and nose
steer
ing to k
eep the model tr
ac
king str
a
ight.
Gain
as m
uch speed as y
our r
unw
a
y
and fl
ying site will
pr
actically allo
w bef
ore gently applying up ele
v
ator
,
lifting the model into the air
. At this moment y
ou ma
y
need to apply r
ight r
udder to counter
act engine torque
.
Be smooth on the ele
v
ator stic
k, allo
wing the model
to estab
lish a
g
e
ntle
climb to a saf
e altitude bef
ore
tur
n
ing into the tr
affi
c patter
n
and retr
acting the gear
(should y
ou choose to do so on y
our maiden fl
ight).
FLIGHT
F
o
r reassur
ance and to k
eep an e
y
e on other tr
affi
c
,
it is a good idea to ha
v
e
an assistant on the fl
ight
line with y
ou.
T
e
ll him to remind y
ou to throttle bac
k
once the plane gets to a comf
or
tab
le altitude
.
While
full throttle is usually desir
a
b
le f
o
r tak
e
off
, the B-25
should fl
y w
e
ll at appro
x
imately 1/2-throttle
.
T
a
k
e
it easy with the B-25 f
o
r the fi
rst
fe
w
fl ights
,
g
radually getting acquainted with it as y
ou gain
confi
dence
. Adjust the tr
ims to maintain str
a
ight and
le
v
e
l fl
ight.
After
fl
ying around f
o
r a while
, and while
still at a saf
e altitude with plenty of fuel, pr
actice slo
w
fl
ight and e
x
ecute pr
actice landing approaches b
y
reducing the throttle to see ho
w the model handles at
slo
w
er speeds
. Extend the fl
aps at lo
w throttle settings
to see ho
w the model reacts
. Add po
w
e
r to see ho
w
she climbs as w
e
ll.
Contin
ue to fl
y
around,
e
x
ecuting
v
a
ri
ous maneuv
ers and making mental notes (or
ha
ving y
o
ur assistant wr
ite them do
wn) of what tr
im or
C
.G.
changes ma
y be required to fi
ne tune the model
so it fl
ies the w
a
y y
o
u lik
e
. Mind y
our fuel le
v
e
l, b
u
t
use this fi
rst
fl
ight to become f
amiliar with y
our model
bef
ore landing.
B-25 ENGINE-OUT FL
YING PR
OCEDURES
One of the pr
imar
y concer
ns when fl
ying a twin-
engine model is "what if one engine quits?"
While
“engine-out”
is ne
v
e
r desir
a
b
le
, through e
xper
ience
and testing w
e
ha
v
e
de
v
e
loped a model that will not
react suddenly or une
xpectedly and can be controlled
w
e
ll enough to get it saf
ely bac
k to the g
round if one
engine does quit.
There are tw
o diff
erent approaches that can be tak
en
if an engine quits
.
“Plan A”
is to f
o
llo
w the
Single
Engine-Out Pr
ocedures
to carefully fl
y the model on
one engine allo
wing y
ou to br
ing it closer to the landing
z
o
ne or r
unw
a
y.
If
, ho
w
e
v
e
r,
y
o
u become confused or
fi
nd y
ourself not ab
le to e
x
ecute or understand the
procedures
, it w
ould be saf
er to go to
“Plan B”
which
is simply to cut the throttle on the remaining r
unning
engine and perf
o
rm
a dead-stic
k landing same as
y
o
u w
o
uld with an
y other model.
Of course
, y
o
u w
o
n’t
ha
v
e
the ability to fl
y the model closer and will ha
v
e
to
land with the altitude and distance giv
en.
T
o
e
x
e
cute
a single-engine landing f
o
llo
w the
Single Engine-
Out Pr
ocedures
belo
w
:
SINGLE ENGINE-OUT PR
OCEDURES
The fi
rst thing to do is recogniz
e
that an engine has
quit.
This ma
y not be easy because the plane ma
y not
react immediately or the single r
unning engine ma
y
be diffi
cult to hear if other models are also in the air
.
Once y
ou’v
e
noticed that an engine has quit, the ne
xt
thing to do is decide! Decide whether to contin
ue to
fl
y on one engine until y
ou can get the plane closer
, or
to just kill the r
unning engine and mak
e a dead-stic
k
landing.
The
T
op Flite B-25 has fl
o
w
n both left and
ri
ght-hand tur
ns on a single engine
, tur
n
ing both into
the dead and into the r
unning engine
. Both situations
will require the coordinated use of r
udder and ailerons
.
The ke
y to making turns on one engine is to steer
the plane with the rud
der and use the ailer
ons
onl
y f
o
r keeping the wings le
vel.
Using the ailerons
to mak
e bank
ed tur
ns ma
y result in a stall or a spin,
so be cer
tain to use the r
udder f
o
r tur
n
ing.
The other thing to k
eep in mind when fl
ying on one
engine is that when tur
n
ing
to
w
a
rd
the dead engine
(making a left-hand tur
n
with the left engine not
ru
nning) tur
ns ma
y be tighter than y
ou e
xpect.
And
when tur
n
ing
awa
y
from the dead engine (making
a r
ight-hand tur
n
with the left engine out) tur
ns ma
y
be wider than y
ou e
xpect.
If using the ailerons f
o
r
tur
n
ing a
w
a
y
from the dead engine the nose will pitch
up the plane will slo
w
until it stalls
, so again, do y
our
tur
n
ing with the r
udder and use the ailerons to k
eep
the wings le
v
e
l.
In either scenar
io the other thing to remember is to
k
eep the airspeed up
. P
o
w
e
red b
y
one engine
, there
will be enough thr
ust to e
x
tend the fl
ight, b
u
t the
plane will slo
w
ly lose altitude
. If too m
uch airspeed
is lost, one engine will not be ab
le to pro
v
ide enough
po
w
e
r reco
v
e
r,
so y
ou will ha
v
e
to point the nose
do
wn to gain airspeed.
If the plane is already too
lo
w this ma
y not be an option, so
fl at,
lar
g
e
turns
are the k
e
y.
When on the fi
nal leg approaching the
ru
nw
a
y, cut the r
unning engine just the same as y
ou
w
o
uld if perf
o
rm
ing a nor
mal approach.
Flaps are not
recommended f
o
r a single-engine landing unless y
ou
are surely going to o
v
ershoot.
