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Old Jan 15, 2003, 08:32 PM
Aireze1@cs.com
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[RCSE] No Trim with Butterfly, Start or Speed selected on Futaba T9CAP?

Hi All, when I switch on butterfly, start or speed, The trims on the
transmitter won't work. Am I doing something wrong or is something wrong with
the TX? Any and all help appreciated. Rich
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Old Jan 16, 2003, 12:52 AM
Maurice Podder
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Re: [RCSE] No Trim with Butterfly, Start or Speed selected on Futaba T9CAP?

On the 9C when an offset (Butterfly, launch or speed) is engaged by
its switch the trims affect only the offset (Butterfly, launch or
speed). This feature, when understood, gives a tremendous advantage
in setup. Example: with the launch switch engaged you release the
plane and its climb is not steep enough. Just reach up and add a few
clicks of up and the plane begins to climb steeply up the line. The
advantage is access to the launch mode without having to look at your
transmitter. And the added up trim only affects the launch. For
when you turn off the launch switch the trim setting reverts to what
you had set for normal flight. This works in each of the offsets.
If you flip the reflex or speed switch the trims now only effect the
speed setting. Now you go to reflex and suddenly the nose goes down,
without looking at your transmitter just add in some up trim. Now
its flying perfect in speed and when you turn it off it reverts to
what you had set for normal flight. Lets say when you go into
landing mode (Butterfly) and when you start to apply flap the plane
turn slightly to the right. Just add a few clicks of left aileron.
It only affects the plane during landing mode. When you turn off the
switch it reverts to what you had set for normal flight. This makes
fine tuning the plane much easier. And if you forget and leave any
of the switches on the radio beeps and a red light flashes.

I hope this helps
Maurice



--- In soaring@yahoogroups.com, Brett Jaffee <bjaffee@t...> wrote:
> I know that in the case of butterfly, when that function is

activated, the elevator trim is only affecting the elevator per the
amount of butterfly mode. In other words, the trim is working to
effect the elevator compensation during butterfly, not the actual
elevator trim. For example, if you move the throttle stick so you
have full crow, you should see the elevator trim take effect. This
is kinda dangerous, as you are affecting the compensation even when
the throttle stick is at 0% crow, even though you don't see the
elevator actually moving. All of us are still a bit baffled as to
why Futaba did it this way.
>
> The same thing might be in effect for start and speed, but I'm not

sure.
>
> Aireze1@c... wrote:
> >
> > Hi All, when I switch on butterfly, start or speed, The trims on

the
> > transmitter won't work. Am I doing something wrong or is

something wrong with
> > the TX? Any and all help appreciated. Rich
> > RCSE-List facilities provided by Model Airplane News.

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Old Jan 16, 2003, 06:22 AM
Aireze1@cs.com
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Re: [RCSE] No Trim with Butterfly, Start or Speed selected on Futaba T9CAP?

Thanks to all that replied to my post. I guess this is the way Futaba works
it's trim in these modes. Rich
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Old Jan 16, 2003, 09:57 AM
Registered User
Vince inTX.'s Avatar
Santa Fe, Texas
Joined Oct 2002
402 Posts
I would assume that Futaba did it this way becayse the 9C is soooo easy to program.......make the adjustments in flight to maintain a safe flight, when the bird is back on the ground you can simply reprogram the surface movement percentage. It only takes a few seconds.

That may not be the reason they really did it this way but that is the way I choose to rationalize that which I cannot change....It helps to keep me smiling when I pick up my $ 400.00 9C to go flying.

just my 2 cents

Vince
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