Canards mechanicaly mixed with elevons

[Butch777]

I'm building a 4oz 18" EPP indoor delta wing canard. I'm using 2 servos to connect the elevons to the canards so the canard helps in pich and roll as well.
Theres a video of a Gripen by Nadim, that is set-up with elevons riged to the canards, so it loops real quick and rolls fast.
The control rods are crossed so that the right elevon is connected to the left canard and so-on.
In a right roll, both the right elevon and canard have the trailing edge down and the left is opposite. So it rolls very evenly and smoothly.

What if in a right roll the the right elevon and canard were climbing and the left diving. Meaning the right canard was leading edge up and the right elevon was trailing edge up.
It seems to me it would be a corkscrew type roll, but faster!
Anyone ever set one op this way?? Thanks, Butch


The first vid showes the control surfaces working and the second is the flight.
http://www.rcgroups.com/forums/showthread.php?t=689756#post7505117

[Brandano]

Well, in that case you'll effectively have an airbrake out while turning, not quite what you'd ideally want. It will probably still roll since the aileron has more authority that the canard, but not as much as if all surfaces were contributing to the roll. Also, you might want to keep individual control for al surfaces to use the ailerons as flaps while maintaining pitch trim with the canard, meaning all trailing edges down. It might be a tad hard to do at that scale, though.

[HugePanic]

why don`t you use the controll surfaces as they are ment to?

use one servo for aileron, and one for the canard.

[Butch777]

So far it flys fine with the elevons mixed with the canards. As in left rear elevon control roded with the right canard.
I'm just trying to see if it will turn tighter the other way since its a indoor slowflyer. Butch