GREAT PLANES FW-190 Focke Wulf Buku Petunjuk - Halaman 14
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This is where your model should balance for the first flights.
Later, you may wish to experiment by shifting the C.G. up to
1/4" [6.4 mm] forward from the starting C.G. or 3/4" [19 mm]
back to change the flying characteristics. Moving the C.G.
forward may improve the smoothness and stability, but the
model may then require more speed for takeoff and be more
difficult to slow for landing. Moving the C.G. aft makes the
model more maneuverable, but could also cause it to
become too difficult to control. In any case, start at the
recommended balance point and do not at any time
balance the model outside the specified range.
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2. With the wing attached to the fuselage and all parts of
the model installed (ready to fly), place the model upside-
down on a Great Planes CG Machine, or lift it upside-down
at the balance point you marked.
❏
3. If the tail drops, the model is "tail heavy" and weight
must be added to the nose to balance. If the nose drops, the
model is "nose heavy" and weight must be added to the tail
to balance. If additional weight is required, use Great Planes
(GPMQ4485) "stick-on" lead. A good place to add stick-on
nose weight is to the bottom of the fuse at the nose (don't
attach weight to the battery box–it is not intended to support
weight). Begin by placing incrementally increasing amounts
of weight on the bottom of the fuse under the nose until the
model balances. Once you have determined the amount of
weight required, it can be permanently attached. If required,
tail weight may be added in the same manner.
❏
4. IMPORTANT: If you found it necessary to add any
weight, recheck the C.G. after the weight has been installed.
Balance the Model Laterally
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1. With the wing level, have an assistant help you lift the
model by the motor propeller shaft and the bottom of the
fuse under the TE of the fin. Do this several times.
❏
2. If one wing always drops when you lift the model, it
means that side is heavy. Balance the airplane by adding
weight to the other wing tip. An airplane that has been laterally
balanced will track better in loops and other maneuvers.
PREFLIGHT
Identify Your Model
No matter if you fly at an AMA sanctioned R/C club site or if you
fly somewhere on your own, you should always have your name,
address, telephone number and AMA number on or inside your
model. It is required at all AMA R/C club flying sites and AMA
sanctioned flying events. Fill out the identification tag on page 17
and place it on or inside your model.
Charge the Batteries
Follow the battery charging instructions that came with your
radio control system to charge the batteries. You should
always charge your transmitter and receiver batteries the
night before you go flying, and at other times as
recommended by the radio manufacturer.
CAUTION: Unless the instructions that came with your
radio system state differently, the initial charge on new
transmitter and receiver batteries should be done for 15
hours using the slow-charger that came with the radio
system. This will "condition" the batteries so that the next
charge may be done using the fast-charger of your choice.
If the initial charge is done with a fast-charger the
batteries may not reach their full capacity and you may be
flying with batteries that are only partially charged.
Balance the Propellers
Carefully balance your propeller and spare propellers before
you fly. An unbalanced prop can be the single most
significant cause of vibration that can damage your model.
Not only will motor mounting screws and bolts loosen,
possibly with disastrous effect, but vibration may also
damage your radio receiver and battery. When balancing the
propeller that came with your Fun Force ARF, add tape to
the light side of the propeller. Do not shave material away as
is done with traditional propellers.
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