would it be posible to asign one joystick axe to two plane controls? servotabs on 109
 

the idea is to control BOTH elevator trim and elevator surface with the y axe of thejoystick in order to have servo assistance for the 109 at high speed dives, perfectly realistic but just the 109 engineers didnt think of it

any ideas to control two axes of the plane with just one joystick axe?

So basically you want to turn the ailerons into elvators aswell? I dont think its that they didnt think of it, well actually they proberbly didnt think of it... because of mechanics and physics..

I think he wants to assign elevators and elevator trim on the same axis...I don't think it would be a good idea, trim has to be independent from the elevators, I don't see how the plane would know exactly know what trim you need at any moment for what you, as a pilot, want to achieve. :confused:

well if the elevator trim didnt have delay i could just link the stick to the elevator trim having a wind servoasistance usefull in real life what could be easy to make in real life and in fact later widely used

http://en.wikipedia.org/wiki/Servo_tab

Pinnacle Game Profiler will most likely offer what you're looking for.

It's just a matter of creating an axis, or binding the servos (or whatever its called) in-game to a button via this program then attaching the command to your elevator axis on your joystick, or wherever you want.