Hello,

I am trying to setup a 3ch (2 aileron/1 elevator) sailplane as follows:

Hardware config:
-two aileron servos, right plugged into #1, left plugged into #5
-one elevator servo, plugged into #2
-hitec 555 receiver(I'd use the Futaba 148 it came with but it shorted out in a crash) []

What I want to do:
-Assign the throttle stick to control the aileron servos as flaps so I can use the throttle stick to adjust flap/spoiler(+100/-100% movement)

What I have done:
-First, in Parameters I have selected the second aileron to be ch.5/6, this got the ailerons working properly.
-Second, I enabled the Flapperon mix with everything set to +100/-100
-Thrid, disabled Flap Trim, as it was limiting the flap/spoiler to a set %, and I want 100% movement.
-At this point the assigned rotary dial(VR-A) controls the flaps. I have a feeling I'm stuck with this setup.
-Beyond that, I've tried all the different mixes to get the throttle stick to control the flaps(both ailerons), but what ends up happening is what ever I assign to flaps just ends up trying to control only the left aileron servo instead of both of them.

Do you have any suggestions for getting the programming to work in this manner? Perhaps I need more channels on my receiver to make this work...?

Thanks,
Avery-

Did you try two pmixes, one with throttle as master and right aileron channel as slave, and a second with throttle as master and left aileron channel as slave?

That's a great idea! I'll give it a try. Thanks!

ave-

I tried this but it doesn't seem to work. In PMIX, if I set the slave control to Flap, only the right alieron moves. If I set the slave control to Aileron, both ailerons move, but they move in opposite directions. The problem with using two PMIX's is it doesn't seem to treat the ailerons independently, you can't program them independently. If I could find a way to control the left aileron somehow, this would work. Thanks for the suggestion! I thought this was going to do it! Anyone else?

ave-

Slaves should be channels 1 and 5, not "flap" or "aileron". I've done this with dual aileron servos tied to my elevator as master, so it should work with the throttle stick as the master.

Hi Avedin,

I would suggest making sure first thing that your Gear channel is nulled in AUX channel.
Next, do a Pmix with Throttle as Master, Gear as Slave, leave the stick assignment NULL and set your percentages at +100% both ways.
Now, do a 2nd mix with Throttle as Master, Aileron as Slave, again leaving the stick NULL and setting the percentages to +100% both ways.
(If you are wanting this mix to be activated by a switch, then in both setting select the same switch and on position.)
You may need to make these percentages, a negative amount if your are not getting the direction you want from your flaps.

This sounds as though it may be what you are looking for.

I hope you find this information helpful. You can also reach our Futaba support technical team at 217-398-8970, or via fax at 217-398-7721.

Sincerely,
Krysta
Lead Futaba Customer Service and Programming Technician

Wow, that works!!! I had pretty much given up on this and just happened to check back. Thanks a ton for the instructions! I would have never guessed to set it up like this!!


Avery-