Optimal motor configuation for higher electrical power in a smaller space Favored (because these qualities allow the machine do quick and nimble things for a longer time) mechanical power angular acceleration torque/volume torque/mass torque longevity Neutral resistance voltage loops, wire length, wire charge capacity area per loop diameter, wire Disfavored (because these qualities prevent the machine from do quick and nimble things for a long duration) current mass volume The chart below consists of the solutions by a Microsoft Excel add-in. What the chart below shows is that in order to follow the criteria above, you have to increase certain parameters at a faster rate than others, while decreasing others in the process. The rate is r, where x=(1+r). x^9: resistance x^8: voltage x^7: mechanical power x^6: angular acceleration x^4: torque/volume; wire loops; torque/mass x^3: wire length x^1: torque, longevity x^0: charge capacity x^-1: current x^-2: area per loop x^-3: wire diameter; mass; volume Consider x=2. We would have: 512 times the resistance 256 times the voltage 128 times the mechanical power 64 times the angular acceleration 16 times the torque/volume; wire loops; torque/mass 8 times the wire length 2 times the torque, longevity The same charge capacity 50% of the current 25% of the area per loop 12.5% of the wire diameter; mass; volume The above suggests that while the possible mechanical power is limited by electrical power, its possible have negative relationship between power and volume, power and mass, power per current - SIMULTANEOUSLY. It's only a matter of engineering as to how small, and powerful, and how long lasting the motor can be.