constructing a controller

I am total naffed off with most computer joysticks when it comes to using flight simulators, and considering that all that is needed is to connect poteniometers across the pins of a gameport I feel i should be able to construct something better.
this has particualary come to a head since buying a miniture electric RC helicopter - i want to practice flying a heli on the computer. Now, as control of the tail rotor is critical on a helicopter i really want an independant chanel for this - ie. not some daft sidewinder style twist grip that then ****'s up you control in other directions.
whilst rudder peddals would be one solution, it would be nice to have something like the tx box for the model.
All this needs to be is two joystick style potentiometers (ie. 4 poteniometers in two joystick groups) - the interface is very simple to a games port (I have actually interfaced a poteniometer to games port once before when make a crude and nasy rudder pedal set up).
Only prob is - where can I get the joystick potentiometer units. I'm sure these must be available andI think I saw them a few years ago in maplin. But I can't find them at the moment.
anyone any ideas??
BTW: i really hate my sidewinder force feedback. it models the gross forces but not the subtle force you actually use to fly a plane. not to mention the disasterous lags you sometimes get and sudden aplication/release of forces.
I say this as somone who has about 150 hours power and 30 in gliders.
And the concept of twisting the handle is truly awful as you then have to re-calibrate your hand as to what is forward.
Surely it makes more sense to take the rudder bar onto a seperate control. - RC fliers have used a two stick config for as long as four channel controls have existed.
this has particualary come to a head since buying a miniture electric RC helicopter - i want to practice flying a heli on the computer. Now, as control of the tail rotor is critical on a helicopter i really want an independant chanel for this - ie. not some daft sidewinder style twist grip that then ****'s up you control in other directions.
whilst rudder peddals would be one solution, it would be nice to have something like the tx box for the model.
All this needs to be is two joystick style potentiometers (ie. 4 poteniometers in two joystick groups) - the interface is very simple to a games port (I have actually interfaced a poteniometer to games port once before when make a crude and nasy rudder pedal set up).
Only prob is - where can I get the joystick potentiometer units. I'm sure these must be available andI think I saw them a few years ago in maplin. But I can't find them at the moment.
anyone any ideas??
BTW: i really hate my sidewinder force feedback. it models the gross forces but not the subtle force you actually use to fly a plane. not to mention the disasterous lags you sometimes get and sudden aplication/release of forces.
I say this as somone who has about 150 hours power and 30 in gliders.
And the concept of twisting the handle is truly awful as you then have to re-calibrate your hand as to what is forward.
Surely it makes more sense to take the rudder bar onto a seperate control. - RC fliers have used a two stick config for as long as four channel controls have existed.