Ok. So here is a backwards planetary gear https://grabcad.com/library/planetary-gear-set-5 It makes things move faster instead of slower if you put this in the middle 42 stepper motor 25:1 Planetary Reducer by below_cho - Thingiverse The center will move 25 times faster than the outer rings are moving Then you will have a low torque device like a harmonic drive that can be back driven because the outer edge of the 25:1 will not have the resistance of a harmonic drive and you will make a new gearing and we will be once step closer to making a spring powered cellphone charger https://www.behance.net/gallery/1902587/Cyclus-Step Can anyone make the file to put the 25:1 in the center of the backwards planetary gear
