Chain placement and front axle rotation... this is going to be interesting. Rotate the front axle with a bicycle chain. Conceptually, it works. In practice, I'm not sure how I'd maintain it even if I could put it together like I have in Blender.

Front wheels and drivechain length. Commercial recumbent trikes, for reasons I don't understand, run a long chain underneath to the rear wheel. Camber rules that out and I don't want a 8 foot chain anyway. I'd like to keep everything close to where it need to be.

Over the next year, I'm going to design and build a recumbent cycle. Not sure why I didn't come up with this long ago but life happens as it happens.

To answer the first question: will their be a motor? Yes. My right leg and my left leg. If you're brave (or dumb) enough to ask the second question: do your legs work?... yes. I'll leave it at that so I don't plunge a dagger through you.