So, here's the deal: As many of you know, I'm building a hovercraft. (The web site is outdated, but you get the general idea) In my never ending quest to be unique and make things as cool as I possibly can, I've decided to do away with the control lines. That's right: I want a fly-by-wire system. Instead of a run-of-the-mill flight yoke and throttle with push/pull cables, I want an analog joystick connected to beefy servos for throttle and rudder control. How the heck do I do it? I understand how R/C systems work. The radio sends signals to a receiver over one of many channels, and the receiver then applies the appropriate voltage to the appropriate servo. Easy enough. For obvious reasons, however, a full 20 foot 8 passenger hovercraft is NOT going to be controlled via radio, thank you very much. It's got to be hardwired. Where do I buy parts to make something like this? Come to think of it, CAN I buy the parts? Really, I just need a large and cool looking analog joystick (perhaps with some buttons on it for controlling other functions) and some way to interface that bad boy with my servos. Servos will need to be reasonably powerful. I was thinking one servo per rudder (four rudders total). I need them to move those rudders back and forth at a fairly good clip if called upon to do so. Figure how long it takes you to turn an outboard boat engine from center to hard right (quarter of a second?), the servos should be that fast. And of course they should be able to handle a reasonable amount of force. If they can push the rudder over with more strength than you could with your hand, they'll be fine. They'll also have to be able to withstand a marine environment. They won't be submerged, but they will get wet. I can build covers around them if necessary but it will be difficult to keep all moisture out. So, is there anyone here who can get me started on this monumental task?