[phildogg]

running a 8xl on 4s lipo it looks to me like I'll need a huge pinion to get 40mph does this sound right?

Differential Ratio: 2.8461538461538463
Transmission Ratio: 1.83
Other Ratio: 1
Spur Tooth Count: 68
Pinion Tooth Count: 26
Total Voltage: 14.8
Motor KV: 2084
Tire Diameter (inches): 5.75
Tire Ballooning (inches): 0
Motor Current Draw: 0
Motor coil Ω: 0.0073
Spur/Pinion Ratio: 2.62 : 1
Total Ratio: 13.62213 : 1
Tire Circumference (inches): 18.06 inches (458.83mm)
Total Motor Speed: 30843.2 RPM
Vehicle Speed: 38.73 MPH (62.22km/h)
Effective Speed Rate: 2.62mph/V (4.2kmh/V)
Effective KV Value: 2084


phil