Hobbico Nexstar select, Instruction Manual

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4. If the fuselage is level when lifting the model with your

fingers anywhere between the lines, the C.G. is correct.
Proceed to the checklist in the following section. If you cannot
find a spot between the two lines where the airplane balances,
then either one of the following will happen: If the tail drops
when lifting the model, the plane is tail heavy and will require
nose weight to balance. If the nose drops, the plane is nose
heavy and will require tail weight. Do not be concerned if your
model requires a few ounces of nose or tail weight. Almost all
models require additional weight to balance and fly correctly!

If additional weight is required to balance the plane, purchase Great
Planes

®

Self Adhesive Lead Weights (GPMQ4485). The weight is

segmented in 1/4 oz. increments and is easy to work with. If adding
weight to the tail, attach it to the left side of the fuselage (opposite
the muffler) under the stab. If adding weight to the nose, attach it to
the inside of the fuselage side next to the engine.

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5. If you found it necessary to add weight, recheck the

C.G. after doing so.

At this point the airplane setup is complete except for the Active
Flight Stabilization (AFS) system. To activate the AFS system
you need to connect the two wires labeled “AFS A” together and
the two wires labeled “AFS B” together, but before you do,
please read the following:
The AFS sensor is part of the Active Flight Stabilization System.
For the AFS to work properly, it needs to be oriented with the "+"
symbol pointing towards the front of the airplane. Please, use
the image below for reference. Make sure the sensor is installed
tightly to the bottom of the aircraft.

The AFS sensor operates by sensing
the strength and contrast of sun light.
This unit works best when the sun
is at least 25 degrees above the
horizon, and on partially cloudy

days or overcast. Extremely strong sunlight or light
contrast between the sky and the ground may prevent the
module from working at its optimum. The unit's performance
decreases as the sun gets lower on the horizon (i.e. in the early
morning or late in the evening) and on extremely bright days.You
should also be cautious when flying over snow or water. In these
conditions it is best to disable the unit by setting the gain to
zero or simply disconnecting the AFS's sensor wires. After
doing this your radio system will work like any other 4-channel
radio system but the flight stabilization system will not operate.

To know if the sun is above 25 degrees in the horizon, place
the fuselage roughly 90 degrees to the sun and then look at
the shadow of the wing on the main landing gear. If the main
landing gear is completely inside the wing's shadow, then it
is safe to fly with the AFS module adjusted to the desired
gain. If any sun hits the main landing gear, then it is best to
set the gain of the AFS to zero or to disconnect it. Flying
with the AFS module active under this condition will produce
undesired results.

The AFS is not an autopilot. It will not fly the airplane for
you. What it will do is return the airplane from any attitude to
straight-and-level when the sticks are released. The gain
determines how fast it stabilizes your airplane. To adjust the
gain, rotate the screw adjustment in the AFS module fully
counterclockwise (zero gain) and then rotate clockwise to the
position you desire. After extensive testing, we have found that
the optimum gain for inexperienced pilots is around 35% of the
total gain. As you progress in your flying skills, gradually
decrease the gain on the unit until you effectively turn it off by
setting it to zero gain (fully counterclockwise).

Front of
Airplane

AFS SENSOR

Setting up Active Flight Stabilization

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