http://www.youtube.com/watch?v=izq0G-qtY4M
Differential Ratio: 3.3333333333333335
Transmission Ratio: 1
Other Ratio: 1
Spur Tooth Count: 46
Pinion Tooth Count: 15
Total Voltage: 14.8
Motor KV: 2200
Tire Diameter (inches): 4.6
Tire Ballooning (inches): 0
Motor Current Draw: 0
Motor coil Ω: 0.006
Spur/Pinion Ratio: 3.07 : 1
Total Ratio: 10.22222 : 1
Tire Circumference (inches): 14.45 inches (367.06 mm)
Total Motor Speed: 32560 RPM
Vehicle Speed: 43.59 mph (70.02 km/h)
Estimated Adjusted Speed: 41 mph (66 km/h) - 6% loss