Brushless Pro's Please Help!

[hoovhartid]

ok...

I'll take a stab at it....

I'm gonna suggest the following;

For the ESC, The MM or the MMM....possibly a UBEC.
For the motor, A feigao 12XL
For batteries two TRC 2s 15c 8000mAh run parallel. Thats right...7.4v 16000mAh.
Gearing 68/16

Differential Ratio: 2.8461538461538462
Transmission Ratio: 1.7222222222222223
Other Ratio: 1
Spur Tooth Count: 68
Pinion Tooth Count: 16
Total Voltage: 7.4
Motor KV: 1390
Tire Diameter (inches): 5.9
Tire Ballooning (inches): 0
Motor Current Draw: 90
Motor coil Ω: 0.0164
Spur/Pinion Ratio: 4.25 : 1
Total Ratio: 20.83226 : 1
Tire Circumference (inches): 18.54 inches (470.8 mm)
Total Motor Speed: 8234.36 RPM
Vehicle Speed: 6.94 mph (11.14 km/h)
Estimated Adjusted Speed: 7 mph (11 km/h) - 1% loss
Effective KV Value: 1112.75
KT constant: 0.97 oz-in/A
Motor Torque: 0.46 ft-lbs
Final Torque: 9.5 ft-lbs
Final Power: 666 watts (0.9 HP)


if its too slow...you got tons of gearing options to go upto;

this is 54/24

Differential Ratio: 2.8461538461538462
Transmission Ratio: 1.7222222222222223
Other Ratio: 1
Spur Tooth Count: 54
Pinion Tooth Count: 24
Total Voltage: 7.4
Motor KV: 1390
Tire Diameter (inches): 5.9
Tire Ballooning (inches): 0
Motor Current Draw: 90
Motor coil Ω: 0.0164
Spur/Pinion Ratio: 2.25 : 1
Total Ratio: 11.02885 : 1
Tire Circumference (inches): 18.54 inches (470.8 mm)
Total Motor Speed: 8234.36 RPM
Vehicle Speed: 13.11 mph (21.05 km/h)
Estimated Adjusted Speed: 13 mph (21 km/h) - 2% loss
Effective KV Value: 1112.75
KT constant: 0.97 oz-in/A
Motor Torque: 0.46 ft-lbs
Final Torque: 5.03 ft-lbs
Final Power: 666 watts (0.9 HP)

just a guess.

just be careful....the devil is in the wattage....