Seagull Models JU-87 STUKA GIANT SCALE, Assembly Manual

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39
BALANCING.
1) It is critical that your airplane be
balanced correctly. Improper balance will
cause your plane to lose control and
crash. THE CENTER OF GRAV-
ITY IS LOCATED
130MM BACK
FROM THE LEADING EDGE OF
THE WING AT THE WING ROOT.
3) With the model inverted, place your
ingers on the masking tape and carefully
lit the plane.
Accurately mark the balance point on
the top of the wing on both sides of the
fuselage. he balance point is located
130mm
back from the leading edge of
the wing at the wing root. his is the bal-
ance point at which your model should
balance for your irst lights. Later, you
may wish to experiment by shiting the
balance up to 10mm forward or back to
change the lying characteristics. Mov-
ing the balance forward may improve
the smoothness and arrow- like tracking,
but it may then require more speed for
take of and make it more diicult to slow
down for landing. Moving the balance at
makes the model more agile with a light-
er and snappier ”feel”. In any case,please
start at the location we recommend .
2) Mount the wing to the fuselage. Using
a couple of pieces of masking tape, place
them on the top side of the wing
130mm
back from the leading edge of the wing at
the wing root.
With the wing attached to the fuselage,
all parts of the model installed ( ready to
ly), and empty fuel tanks, hold the mod-
el at the marked balance point with the
stabilizer level.
Lit the model. If the tail drops when
you lit, the model is “tail heavy” and you
must add weight* to the nose. If the nose
drops, it is “nose heavy” and you must
add weight* to the tail to balance.
*If possible, irst attempt to balance the
model by changing the position of the re-
ceiver battery and receiver. If you are un-
able to obtain good balance by doing so,
then it will be necessary to add weight to
the nose or tail to achieve the
proper balance point.
Make sure to parellel.
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