View Full Version : Help with Futaba 9c programming

05-26-2006, 11:07 PM
I'm in need of some help programming my radio for my first Electric Sailplane. I have a new (to me) Futaba 9cap Super radio and I just finished building a Dreamline Pro E (aka Omega/Fly-Q) electric Sailplane. The Dreamline has 4 servos, 1 each for ailerons (full span) and 2 for the Vtail. The plane is designed so that you can setup to use the ailerons as spoilerons but not flapperons as there is very little bevel and therefore very limited downward deflection of the ailerons.

My confusion on how to setup the radio in in several areas....

1. Which glider mode should I use?
2. Can I utilize the Glider mode mixes and still have left stick throttle on channel 3?
3. When setting up the Vtail, should all rates be 100%?
4. To setup Spoilerons, do I just choose crow and set the "flaps" to positive instead of negative?
5. Should the spoilerons be adjustable or just preset?

As you can see, I'm pretty confused with a bunch of questions. I understand how to use the radio, but have only used it in basic acro mode so far. I haven't maidened the plane yet and would like to get the radio setup correctly from the beginning instead of just using a basic Acro setup that I would later end up changing. Any help would be MUCH appreciated.

05-29-2006, 06:16 AM
I have a 9C ( not the super) that I use for non-electric sailplanes. Let's see if I can help.

You want the glider or Acro for an electric glider without flaps.

If you want to use the glider profile, you can use Glider1Flap This would describe that the flaps are on one servo or that the flaps are on a Y cable.

So, acro or glider 1 flap for you. I would probably use Acro.

Yes you can have glider mode mixes and still have the stick for the throttle on that plane.

When setting up Vtail or elevons, use the vtail and elevon mix to set your end points, not the normal end point menu. As for 100%, this should be set for whatever gets you the throws the mfg recommends for that plane.

Set up for flapperons. Ailerons in 1&6. Now you can set for flapperson or spoilerons. Spoilerons are just flappersons htat are set to go up.

You can have them adjustable or presets, whatever works for you. You can even use a 3 way switch and have no spoilers, some spoilers and more spoilers. Or set the switch and have one for spoilerons, one for flapperons and one for neurtral.

Perhaps this will help as well.

Basic Set-up
by Ed Anderson
aeajr on the forums

Here is my basic set-up procedure, regardless of plane or radio brand. This
assumes a six channel computer radio controlling a full house plane that
has flaps and retractable landing gear. I will touch on what you can do if
you don't have flaps or landing gear later in the post. If you have more or
less channels the steps will be the same, but the options will be a little

Hitec/Futaba Channel Assignments
JR, Airtronics and others may use different sequence. Doesn't matter

Aileron in 1 - If you have two servos, you use a Y cable
Elevator in 2
Throttle in 3
Rudder in 4
Landing gear in 5
Flaps in 6 - If you have two servos, you use a Y cable

I usually power up the radio and select a new memory position. If I am
replacing an existing profile that I am no longer using, I reset all values
to stock settings of 0 or 100% as called for in each case.

This procedure assumes you have your servos mounted and the control
rods/cables attached to the surfaces and the servo arms off the servos.

Power up the plane. If this is an electric plane, I use a 4 cell receiver
pack battery rather than the motor battery attached to the BEC in the ESC as
don't want the motor in play right now.

Check for servo direction. When you work the servo, will the servo move the
surfaces in the proper direction? If not, you use the servo reverse feature
to change their direction. If you are using a standard radio that doesn't
have servo reverse, then you need to remount the servo so the arms move in
the right direction.

To center the surfaces, I hold the surfaces centered with one hand and put
on the servo arms, connected to the rods or cables, so that I have the
surfaces centered as close as possible when I set the arms on. If I have a
screw on/off clevis at the servo end, I will make adjustments so that I can
put the servo arm on and be sitting right at the point where the surface is

When happy the position, I set the servo arm and put in the servo arm screw.
If necessary I might add some adjustment at the surface end If it has an
adjustable clevis to further center the surfaces. This is especially
important if you don't have the ailerons or the flaps each on its own
channel. I want them 99% right from the mechanicals.

Only when this is done do I do any final centering using the radio. On my
radios, the menu is subtrim that is used to center the servos AFTER you have
done as much mechanical centering as you can. If each aileron or flap is on
their own channel, then I can do more from the radio for the
final fine tuning.

You can adjust max throws using control horn position but I normally do this
from the radio. I use the radio's ATV/EPA to set the max throws on each

Then I would decide on what I want for dual rates and exponential on each
channel. Typically I use 100% high with 30% expo and 70% low with 30% expo
as my starting points.

Now, if you don't have flaps, and you have your ailerons on separate
channels, 1 & 6 in this example, then you may want to set the flapperon mix
so you can adjust them individually from the radio and set aileron
differential if you like. This also allows you to retask the ailerons as
flapperons for landing.

If you don't have retractable landing gear, some radios will let you put the
second aileron on channel 5, or the second flap servo on channel 5.

Throttle set-up

If this is a glow plane, then you use the same procedure to adjust the servo
that will control the throttle. If this is an electric plane, you should
follow the procedure recommended by the ESC maker.

That would be basic set-up.

Once you get to the field, be sure to a range check before you even think
about flying.
Make sure you have the right model selected on your computer radio.
Confirm all surfaces are moving in the right direction
Confirm there is no binding of any of the control rods, cables or the
Confirm everything is centered.

When you do your first flight ASSUME THERE IS A MISTAKE or that the plane is
out of trim because you are going to have to be prepared to deal with a
problem very quickly.

Once you get it into the air and flying at a good height, then you start to
check the trim and make whatever changes are needed. Remember that a
handling problem may be do to an incorrectly set CG. This might be masked by
adjustments you can make in trim,but that will make the plane fly
inefficiently and may even make it dangerous. So be sure your CG is right as

I hope this has been helpful.