E- revo gearing questions

Go to this site and plug in some values.
http://scriptasylum.com/rc_speed/_top_speed.html

Front/Rear Differential Gear Ratio: "Traxxas Revo"
Transmission Gear Ratio: E-maxx (3905) 1-Speed or 2-Speed 2nd Gear"
Spur gear: Assuming you're going to be using 32p (0.8mod); 54 56, 58, 62, 65, 68(Stock)
Pinion gear: These can be had from tower, impaktrc, rc-monster, kershawdesign. (Stock is 19t)


This is what you might be looking at:

Differential Ratio: 2.8461538461538463
Transmission Ratio: 1.8333333333333335
Other Ratio: 1
Spur Tooth Count: 54
Pinion Tooth Count: 19
Total Voltage: 14.8
Motor KV: 2382
Tire Diameter (inches): 5.75
Tire Ballooning (inches): 0
Motor Current Draw: 0
Motor coil Ω: 0
Spur/Pinion Ratio: 2.84 : 1
Total Ratio: 14.82996 : 1
Tire Circumference (inches): 18.06 inches (458.83 mm)
Total Motor Speed: 35253.6 RPM
Vehicle Speed: 40.66 mph (65.32 km/h)
Estimated Adjusted Speed: 39 mph (62 km/h) - 5% loss
Effective KV Value: 2382