< Mentor Note -- thread moved to HH from the technical Engineering forums, so no HH Template is shown > Okay so I'm a freshman BE student and one of our first projects is designing a windmill that can produce a voltage of 5 for 2 seconds or longer. We are having trouble find the optimal gear ratio though: Our options are 3:1, 1:1, and 1:3. So far we've figured out the optimal angle of the blades as well as the number and type blade. Any tips? Help? Anything?