The kid in me really wants to dismantle my Logitech Momo Force Feedback steering wheel and start messing with the technology ala custom built stuff
Forwarned is forearmed..... (this applies to the black "momo racing" wheel. may not apply to the older red one)
Nothing to the pedals but 10k pots. Easy hack.
The steering wheel uses a mouse sized optical encoder wheel mounted on the end of the feedback motor.
(this is how most modern pc wheels are)
Unfortuneately, you can't just mount the encoder on the end of a steering shaft because it passes through a handfull of gears first.
I've been too lazy to work out the math.
There is also another sensor that tells it where center is by sensing a silver strip down the center of the main steering shaft.
Older wheels have a pot for the steering and are a lot easier to hack.
I started this hack a while back, but had to set it aside because of work and other projects.
I'm hoping that by removing the stops on my happ ffb wheel and adding a set of optical sensors on the other side of the encoder wheel that I'll end up with a wheel that can do double duty on 270 and 360 degree wheel games. I hope to get back to it within the next few weeks.
The next plan is to print custom encoder wheels on transparency paper, so I can experiment with different tooth counts and hopefully end up with something that I can just mount on the end of a steering shaft.
Keeping paddle shifters on a 360 degree wheel will be the next problem to work out.

Honestly, I'm not that motivated because I'm pretty happy with my unmodified momo wheel.
The only thing I'm really gaining with the Happ wheel is stronger FFB.