DemonRC
Senior Member
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- Houston, TX
Well ole Strodedawg got me thinking about 12s so I'm up late chain smoking up and down the driveway thinking about it. On 3s 5000mah batteries in series I'm getting about 9 minutes runtime on my Leopard 1340kv. If you do the math on that to figure average wattage:
(60 min / 9 min) * 5000mah = 33333mah discharge / 1000 = 33.3A discharge average discharge rate
33.3A * 22.2V = 739.26 watts average usage
So I'll base the following scenarios on a 739.26 watt average usage. This isn't real world. I know each motor is going to perform differently, however, I need a realistic base number for comparisons sake.
Leopard 1340kv on 2x 3s 5000mah in series:
Total Volts: 22.2V
Total Capacity: 5A
Max RPM: 29748
Discharge: 739.26 watts / 22.2V = 33.3A
Runtime: (5A / 33.3A) * 60 = 9 minutes
Leopard 1340kv on 2x 6s 5000mah in parallel:
Total Volts: 22.2V
Total Capacity: 10A
Max RPM: 29748
Discharge: 739.26 watts / 22.2V = 33.3A
Runtime: (10A / 33.3A) * 60 = 18 minutes
Leopard 1000kv on 2x 4s 5000mah in series:
Total Volts: 29.6V
Total Capacity: 5A
Max RPM: 29,600
Discharge: 739.26 watts / 29.6V = 25A
Runtime: (5A / 25A) * 60 = 12 minutes
Leopard 700kv on 2x 6s 5000mah in series:
Total Volts: 44.4V
Total Capacity: 5A
Max RPM: 31080
Discharge: 739.26 watts / 44.5V = 16.61A
Runtime: (5A / 16.61A) * 60 = 18 minutes
I'm pretty sure I got it all right. If I missed something let me know and I'll fix it.
(60 min / 9 min) * 5000mah = 33333mah discharge / 1000 = 33.3A discharge average discharge rate
33.3A * 22.2V = 739.26 watts average usage
So I'll base the following scenarios on a 739.26 watt average usage. This isn't real world. I know each motor is going to perform differently, however, I need a realistic base number for comparisons sake.
Leopard 1340kv on 2x 3s 5000mah in series:
Total Volts: 22.2V
Total Capacity: 5A
Max RPM: 29748
Discharge: 739.26 watts / 22.2V = 33.3A
Runtime: (5A / 33.3A) * 60 = 9 minutes
Leopard 1340kv on 2x 6s 5000mah in parallel:
Total Volts: 22.2V
Total Capacity: 10A
Max RPM: 29748
Discharge: 739.26 watts / 22.2V = 33.3A
Runtime: (10A / 33.3A) * 60 = 18 minutes
Leopard 1000kv on 2x 4s 5000mah in series:
Total Volts: 29.6V
Total Capacity: 5A
Max RPM: 29,600
Discharge: 739.26 watts / 29.6V = 25A
Runtime: (5A / 25A) * 60 = 12 minutes
Leopard 700kv on 2x 6s 5000mah in series:
Total Volts: 44.4V
Total Capacity: 5A
Max RPM: 31080
Discharge: 739.26 watts / 44.5V = 16.61A
Runtime: (5A / 16.61A) * 60 = 18 minutes
I'm pretty sure I got it all right. If I missed something let me know and I'll fix it.
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