power generator using gear ratios?

Question

If I hook up a big gear to a much smaller one to spin it incredibly fast could that be used to generate power? And if so could that idea be used to generate power on a much bigger scale? In my brain it makes perfect sense but there must be something wrong with this idea.

In: 1

Answer 1

Gearing changes the torque and rotation speed in opposite directions. Speed increases and torque decreases or vice versa.

Power = torque * rotation speed

So the gearing doesn’t change the power delivered. And no, your idea won’t work.