Hi guys,
I'm looking to somehow activate this mix on my Futaba 7c transmitter.
I have a plane with a servo on each aileron and would like to have the ailerons move with the elevator, up and down, when a switch is activated.

Does anyone know what this function is called in rc lingo?

Does anyone know how to program the 7c to do this?

I tried the elevator/flap preset and it only worked on one aileron...the other one moved in the opposite direction. I need both ailerons to move the same and in the same direction as the elevators do.

Thanks, expo

spoileron and flaperon.


not sure how to set it up on the 7c though

You're in the right spot, play with the percentages the + and - percentages change the direction.

It is called Elevator to Flap mix. I use it in a number of airplanes with Eclipse 7 Transmitters. Sorry can,t help with the Futaba procedure but most likely first Flaperons must be enabled then the elevator to flap.

Thanks for the help guys...I found the right combination of mix and switch but I couldn't tell you how . I just played with it all evening then it worked. Now I've got "it" on a Harrier and 2 Ucandos..Edge is next.

I reversed the channel 1 and 6 servo connections to get the surfaces moving in the same direction. Doesn't make sense but it helped.

Now I'm wondering if the ailerons shouldn't move opposite to the elevator for 3D maneuvers.

What do you think before I take it up?

Futaba has a great FAQ and Q & A site that discusses mixes on specific transmitters.

http://www.futaba-rc.com/faq/product-faq.html

http://2.4gigahertz.com/systems/futk7000.html

http://www.futaba-rc.com/radios/futj69.html

If you want the ailerons to move as the elevator is activated that's different from flaps or spoilers. You have to slave ailerons to the elevator with a custom mix and assign it to a switch. I'm thinking you'd assign one side at a time (i.e. channel 1 & 6) and assign each to the same switch.

I have the 9C and, luckily, Harry Higley wrote a whole book on such things. Really goes above and beyond the manual and is understandable and very specific to "real" needs.

Actually it does make since and pluging the left side, right side to which channel and the reversing combinations is common to to flaperons and Elevator to flap mixs on all brands and if you don,t know you can try each possible combo but it is tedious.

The whole idea of Elevator To Flap mix is for the flaps (both ailerons) to move when you make an elevator imput in the opposite direction while still allowing roll control while using the ailerons to move the ailerons (flaps) differentially. In other words if you move the elevator stick so the trailing edge of the elevator goes up then this will cause both ailerons (flaps) trailing edges to go down. This has been a technique on controlline for fifty years and it works fine on certain RC aircraft to enable tighter loops and loop combinations both inside and outside.

Suggest you program it through a switch if not already so you can tryt it first in flight a little at a time. The percentage of the mix should be kept low at first, perhaps around 25% untill you have a chance to practice with it.

John

Thanks John. I understand if the surfaces moved in opposite directions tighter loops would be possible. I call it "chasing the tail" in a tight loop. I don't know for sure but I'm thinking that this mix causing up flaps (ailerons), aka airbrake, along with up elevator would allow hi alpha flight, aka harrier, to be performed with less chance of a wing drop or rocking.

Having a brain fart here. Does this make sense or do I have it backwards?

Maybe now that I've got the programming down I should pose this question in the 3D forum?

There is only going to be one definitive answer to your proposed mix and that is for you to try it. keep the percentages low and the mix on a switch.

My personal take on it is that its a mix that is likely counter productive and an aerodynamic dead end suprisingly which there are many. This reguardless of your discipline be it Stunt, Pattern, Scale Aerobatics Or 3D. We all answer to the same Aerodynamics just the popular names tend to change.

John

If you set it so the ailerons move the same as the elevator, then you will be more stable in a harrier attitude. This is because you are essentially reducing the angle of attack of the wing, so it is less likely to stall off to one side.