Finger-powered Driving wheel Mechanics (Experimental)

This thing is EXPERIMENTAL!!!!

Kinda inspired by a steam train wheel, I have designed this little set of mechanics. I'm still 15 and kind of hate those CAD softwares, so don't blame me if you don't like it, it took me 3 hrs to design and two days to brainstorm......
I have made one, it doesn't work too hot (will take a video later). So think twice before you start your printer.
I Look forward to any remixes or makes that works better or any piece of advice. (I really do)