[lincpimp]

Ok, 5s may be a bit too much... I would need to go to an 11t pinion, and I do not think it will fit.. Or go up on the spur size, but that may cause fit issues as well.

Differential Ratio: 4.090909090909091
Transmission Ratio: 1
Other Ratio: 1
Spur Tooth Count: 46
Pinion Tooth Count: 11
Total Voltage: 18.5
Motor KV: 2200
Tire Diameter (inches): 5.75
Tire Ballooning (inches): 0
Motor Current Draw: 0
Motor coil Ω: 0
Spur/Pinion Ratio: 4.18 : 1
Total Ratio: 17.10744 : 1
Tire Circumference (inches): 18.06 inches (458.83 mm)
Total Motor Speed: 40700 RPM
Vehicle Speed: 40.7 mph (65.37 km/h)
Effective KV Value: 2200

4s with a 14t pinion looks just right to me:

Differential Ratio: 4.090909090909091
Transmission Ratio: 1
Other Ratio: 1
Spur Tooth Count: 46
Pinion Tooth Count: 14
Total Voltage: 14.8
Motor KV: 2200
Tire Diameter (inches): 5.75
Tire Ballooning (inches): 0
Motor Current Draw: 0
Motor coil Ω: 0
Spur/Pinion Ratio: 3.29 : 1
Total Ratio: 13.44156 : 1
Tire Circumference (inches): 18.06 inches (458.83 mm)
Total Motor Speed: 32560 RPM
Vehicle Speed: 41.44 mph (66.56 km/h)
Effective KV Value: 2200

Or maybe I should scrap the 2200 motor idea and just stick with my c50 10xl... That motor is 1624 kv, so on 6s with a 12t pinion (that should fit...):

Differential Ratio: 4.090909090909091
Transmission Ratio: 1
Other Ratio: 1
Spur Tooth Count: 46
Pinion Tooth Count: 12
Total Voltage: 22.2
Motor KV: 1624
Tire Diameter (inches): 5.75
Tire Ballooning (inches): 0
Motor Current Draw: 0
Motor coil Ω: 0
Spur/Pinion Ratio: 3.83 : 1
Total Ratio: 15.68182 : 1
Tire Circumference (inches): 18.06 inches (458.83 mm)
Total Motor Speed: 36052.8 RPM
Vehicle Speed: 39.33 mph (63.17 km/h)
Effective KV Value: 1624

Ideas?