Flyzone FLZA4014 - Manual (Page 13)

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2. You have already marked the balance lines on the
bottom of the wings. Now place your fi ngers on the middle
balance line and lift the model. The fuselage should remain
level—it may be helpful to have an assistant view the model
from the side to see. If the fuselage does not rest level try
moving your fi ngers under the wing, making certain to
keep them between the forward and aft lines. As long
as the fuselage is level with your fi ngers between the lines,
the balance range is acceptable and the model is ready to
fl y. However, even if after moving your fi ngers all the way to
the forward lines the nose remains low, tail weight will be
required. Or, even if after moving your fi ngers all the way
to the rear lines the tail remains low, nose weight will be
required. Balance the model as instructed below.
Note: Even if your Cub balances perfectly on the
recommended balance point, later you may wish to change
its fl ying characteristics by moving the C.G. forward or aft.
Moving the C.G. forward (nose heavy) will make the model
more stable which may be better for windier days, but this will
also make it less maneuverable. Moving the C.G. back (tail
heavy) will make the Cub more maneuverable which is good
for experienced pilots who wish to perform aerobatics. In any
regard, start at the recommended balance point and never fl y
the model with the C.G. outside of the recommended range.
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3. Determine the amount of weight required by placing
segments of Great Planes stick-on lead (GPMQ4485) (or
similar) over the cowl or tail where shown, but do not attach
it yet.
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4. Once you can get the model to balance and you know
how much lead will be required, permanently stick it into
position. The best place to add nose weight is to the side of
the fuselage just behind the weights that are already there.
This will require removing the propeller, then the propeller