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Spektrum DX9 driving 4 aileron bipe wings, and spoilerons/flaps. HOW

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Don Fry28/01/2020 17:27:14
4409 forum posts
52 photos

I have sat here for a couple of hours, and have scrambled my brain cell. Every time I think I can do it, it all goes away, leaving me cross eyed. Bottom line is I am not good wth mixes.

I am finishing a Avicraft Panic biplane. It's a hooligan powered biplane. Power will be a 75 or 90 2 stroke. It has 4 ailerons, fitted with a servo on each aileron. I also want to have a spoileron /crow function, so when this bit is activated, I get the top wing ailerons go up by 25 degrees, and the bottom wing ailerons go down by 25 degrees.

Which will be amusing. I have a dream, at say, 25% throttle stick, gives me a tick over, and the spoilerons deploy when I pull the stick to 0%.

Is this possible with a Spektrum DX9?

Failing that, I can live with using one of the sliders to do the spoilerons/crow.

Two answers before asked.

Why?, because I want to. Get a Taranis/Horus, I will hunt you down and rip your throttle lever off.

Steve J28/01/2020 17:54:37
1744 forum posts
50 photos

I would be tempted to set it up as a 2-aileron/2-flap glider with the upper ailerons being on the aileron channels. The AIL > FLP mix and camber system should allow you to do what you want. The four aileron wing in acro may not be flexible enough.

PS You can do in it glider pretty easily. It looks like doing it in acro would require the 2A/2F wing and messing about with free mixes.

Edited By Steve J on 28/01/2020 18:13:01

Don Fry28/01/2020 19:31:07
4409 forum posts
52 photos

Steve, I'm not proud, if the screen says this is a 4 foot glider, with a OS 91 FX attached, there you go.

I had a vague idea of doing a glider 4 aileron wing, with two flaps, and mixing the flap channels, into the ailerons, to produce the output in the ailerons. But the brain cell just can't cope.

Steve J28/01/2020 21:17:51
1744 forum posts
50 photos
Posted by Don Fry on 28/01/2020 19:31:07:

I'm not proud, if the screen says this is a 4 foot glider, with a OS 91 FX attached, there you go.

If you select next from the sailplane type screen you can choose the picture.

Mixing/ail>flp 100%/100% gives you the flaps working as ailerons.

Camber system with either the throttle or a slider as input gives you the crows. If you want the throttle stick controlling both the throttle and crows (I wouldn't personally), you will have to mess about with the offset in the camber system and the motor curve.

Don Fry15/02/2020 15:43:39
4409 forum posts
52 photos

Any way, thank you Steve. I finished the plane before embarking on the programming the aircraft on transmitter. I had a steer it would be possible, and with a little experimentation as to what does what on the camber system have it working as wanted on the left lever.

Odd how Spektrum buried a mixfunction, of obvious value to powered aircraft, in the sailplane area.

Thank you again. I maidened it today is very windy conditions. I did try the crows, 25° of movement. On tickover, deployed, and it fell into a vertical decent, and decended slowly. I took the crows off, and it settled into a glide. That's as far as I got as the timer went off and the tank is none to big. Then I went home, windy and turbulent.

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