Futaba 6XA (Field Force6) Mixing Issue

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Andy - 30 Oct 2006 20:01 GMT

Is it possible to have both flapperon mixing and dual servo controlled
elevators with this radio ? Problem appears to be that the gear channel (5)
is controlled by a 2 position swith and this radio does not have the offset
function of a 9CAP. Can one buy a gismo that connects into the flight pack
to achieve this end? The manual seems to suggest that one can mix 2 channels
to control the elevator halves, but I don't think one can have this together
aileron mixing(ailerons using mixing on channels 1 and 6).
A solution is to use a "pigtail" on the elevator servos and mixing the
ailerons or to use a "pigtail" on the ailerons and mixing on the evevator
halves, but its not a total solution.
Any bright ideas would be appreciated. How about a 3 position switch to
handle channel 5 ?
Andy in South Africa

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MK - 01 Nov 2006 06:15 GMT

I'm not sure I know what you are tryong to do. I have a 6XAS, think they
are the same?
mk

> Is it possible to have both flapperon mixing and dual servo controlled
> elevators with this radio ? Problem appears to be that the gear channel
[quoted text clipped - 10 lines]
> handle channel 5 ?
> Andy in South Africa

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Andy - 01 Nov 2006 12:21 GMT

I think the 6XAS is a later version of the set which I am referring to.
Basically what I want to do is to have a seperate servo controlling the
each ailerons and seperate servos controlling the elevator surfaces (
elevator has 2 halves or control surfaces).
If one wants to be able to adjust the surfaces independently and
electronically one has to employ mixing
of some description.I don't think that this TX is capable of doing this
although the manual seems to suggest it
can. Howevr, the manual does'nt tell one precisely how to do this. I'm
asking the group if they know of any
method with this TX to achieve this end.

Andy

> I'm not sure I know what you are tryong to do. I have a 6XAS, think they
> are the same?
[quoted text clipped - 14 lines]
>> handle channel 5 ?
>> Andy in South Africa

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The Natural Philosopher - 01 Nov 2006 13:00 GMT

> I think the 6XAS is a later version of the set which I am referring to.
> Basically what I want to do is to have a seperate servo controlling the
[quoted text clipped - 7 lines]
> asking the group if they know of any
> method with this TX to achieve this end.

With respect, if I were you, this is teh point at which the Futaba would
go on Ebay, and a Multplex Royal Evo go on my Christmas list.

I have a pair if FF6's because getting a second one was cheaper than
getting an Evo, and it ALMOST has what I wanted...namely 6 more model
memories and JUST enough mixing (I use a lot of throttle to
alerion/rudder and elevator mixing which only works on full rates for
some reason) ... if totally free assignment between sticks buttons and
switches, and RX channels is what you want, the EVO is the machine you
need.

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Boo - 01 Nov 2006 13:44 GMT

>> I think the 6XAS is a later version of the set which I am referring to.
>> Basically what I want to do is to have a seperate servo controlling the
[quoted text clipped - 18 lines]
> switches, and RX channels is what you want, the EVO is the machine you
> need.

I have never actually used one, but I understood the Evo didn't have free
assignment of RX channels ?

I haven't used the 6XA either, but I just dowwnloaded the manual from
<http://www.futaba-rc.com/manuals/notes-6x.html> and it definitely shows V-Tail
and Flaperon mixing. If the plane doesn't have a rudder then of course you can
just use the V-Tail mix with the rudder proportion set to 0%, this may not be
any use though.

What is the exact problem you are experienceing with the PMixes approach ? I
assume you've tried setting a PMix from ch2 to ch5 with control proportions of
100% in both directions ? Does the gear switch still affect the ch5 elevator
when you do this ? If so then try setting the other PMix from ch5 to ch5 (ie to
itself) with control proportions of 0% ?

It's hard to guess what will work without actuyally having a 6XA to hand, but
if the worst comes tot he worst then Schulze make RXs with on-board programmable
mixers, SMC <http://www.sussex-model-centre.co.uk/> and West London Models
<http://www.westlondonmodels.com/> both stock these. Good but pricey...

Hth,

Signature

Boo

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The Natural Philosopher - 01 Nov 2006 16:19 GMT

>>> I think the 6XAS is a later version of the set which I am referring to.
>>> Basically what I want to do is to have a seperate servo controlling the
[quoted text clipped - 41 lines]
>
> Hth,

I think the problem is he wants V tail AND flapperon..and they are not
IIRC available.

The Futabas do the basic stuff (fairly) easily, though I find the logic
a pain...the Evos simply throw away the concept of 1 stick=1 channel and
split the thing into three logical layers..sticks buttons and switches
(input devices) that feed mixers (many in to many out abstractions) ,
that feed output channels (one or more servos all doing the same thing,
a slot on the receiver). This is more complex for a bog standard setup,
but its a heck of a lot more flexible.

Once you step beyond what the Futaba thinks is what you want to do, its
not worth fighting the system. Get the Evo.

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Model Forum / Radio Controlled / Air Models / November 2006

Futaba 6XA (Field Force6) Mixing Issue