Comment by KennyBlanken

No, you can't. Most generators have to be spun at a thousand or several thousand RPMs to put out any sort of amount of power.

Your average inexperienced person can pedal at maybe 80rpm comfortably, but probably considers even that to be "fast."

A road cyclist with a year or so under their belt will do 100rpm if they put their mind to it and are positioned well biomechanically. Above that, to do it and be smooth and efficient, especially for any sort of sustained effort, you have to have a decent amount of experience/training.

That's well over 10x too slow.

And there's still the issue of your average person only being able to put out 100-200W past about 1-3 minutes.