Technic Man pedaling his tool platform

I had some time to make a crude LEGO prototype of the human-powered tool station.  I made do with meshed gears instead of pulleys since I didn’t have any rubber bands to use as a belt. Given some of the constraints of spacing with LEGO, our brave Technic Man can’t actually pedal the machine, but I think it does get the idea across more or less.

Some of the internal workings of the LEGO prototype

Do you have any thoughts about the system? Are there LEGO parts that you like to use for prototyping purposes? Let us know below!