52mph Medusa 2000 Erevo 4s video

[hoovhartid]

Originally Posted by asheck

Would someone else like to try to figure this out with the speed calculator?Because either this motor is off in the rating,The battery is holding 16+ volts under load,or I'm an idiot and doing something wrong with the calculator.

Differential Ratio: 2.8461538461538462
Transmission Ratio: 1.8333333333333334
Other Ratio: 1
Spur Tooth Count: 54
Pinion Tooth Count: 24
Total Voltage: 14.8
Motor KV: 2000
Tire Diameter (inches): 5.9
Tire Ballooning (inches): 1
Motor Current Draw: 105
Motor coil Ω: 0.006
Spur/Pinion Ratio: 2.25 : 1
Total Ratio: 11.74038 : 1
Tire Circumference (inches): 24.82 inches (630.39 mm)
Total Motor Speed: 28340 RPM
Vehicle Speed: 56.73 mph (91.13 km/h)
Estimated Adjusted Speed: 52 mph (84 km/h) - 8% loss
Effective KV Value: 1914.86
KT constant: 0.68 oz-in/A
Motor Torque: 0.37 ft-lbs
Final Torque: 4.34 ft-lbs
Final Power: 1554 watts (2.1 HP)


Where did you go wrong? Tire size? Ballooning Amount?

just messin with ya. Its a nice set-up man