ORIGINAL: Rendegade
What does the the rud rud mix do for you?
Typically I've used the ChanX->ChanX mix trick to turn a channel off, by programming the mix curve to be "flat" across the entire stick travel. I've only used this trick to disable the throttle on electric planes - sort of like a safety switch. With the higher-end radios - with the ability to add a "trim" and attach the trim to any control (such as the throttle), it was hoped that a Rud->Rud mix would allow the overally response (and endpoints) to be a function of where the throttle stick was. Makes sense, but I did not play around long enough with my 12FG to get it to work. The Rud-Aux1 method worked perfect, first time I tried.
The higher-end Futaba radios have a LOT of control options - over 40 variables to specify - depending on the type of mix you are setting up.