2 pots as One

What you need is a pot that will return to center. You could probably do it with a normal pot. For example a 0 - 200k, Center would be 100k, so left pedal would be 0 - 100K and the right pedal would be 100K to 200K. The trick then would be to get it to return to center when the pedal was released. Maybe a servo could do that. (or maybe a pot that is 100K - 0 - 100K not sure if those exsist)

will there be any sort of mechanical linkage to prevent both pedals being pressed in at once?

if you did have a see-saw type action then it`s very simple to do, you could even put both pots in parallel, the problem arrises though, when 2 are allowed to travel at the same time, so Left is giving mostly GND and Right is giving mostly +5V for instance, and the middle is effectively shorted out at this point.

the return is not the problem i could have a simple spring restoring the position, its how to :

1- connect the two pedals with a single pot and when you press one pedal the other doesnt go up(see-saw type as YT2095 suggested)

OR

2- connect two pots somehow, and then the mechanical part is easy

..ok theoreticly, i can bypass a pot by pressing a button, right, when pressed the button opens the 5v connection to the pot , so its like that pot is not there, and if i put that button on the other pedal, when its pressed  it will get readings on its own pot and turn off the other...

and the other not so pretty possibility would be the see-saaw type, with a single pot, so when you push one pedal the other pops up

i cant think of anything else..

Not only they wont be pressed at the same time ,(if i use the see-saw type) but when one is pressed the other will pop up..which is not very realistic

Seems like you could use math between two pots. If each pedal had a pot attached, you could use the Micro controller to determine what position each pedal is in, and derive the outcome from that. You could even choose to ignore one pedelor the other depending on it's possiton in relation to the other.

If i add the arduino to this its a piece of cake, but this is going to be a tutorial for people with RC helicopters...most of them havent even heard of arduino..i need a simple solution

the reason I mention the see-saw action is that it would be impossible to Yaw (pitch or Roll) in 2 different directions anyway, that would be just plain silly

like a steering wheel, you turn left, and the Right hand side of the steering wheel goes Up as the left goes down, that was my thinking.

thats correct and that is why i wanted to devide up that pot into two pots so it will be like two steering wheels - each has an independent movement , but each is connected to the front wheels

something like this would do it then:

but you`de have to arrange it mechanically so that only One can go to the center at any given time, OR either can go Away from the center (probably safest).

Ok first of all thanks for the help, not everyone will stard drawing and taking pictures and stufs..

and the danger here would be if both pots are set to low resistance? well isnt a single pot doing the same thing when its rotated towards the end feeded with the gnd wire