Quote:
Originally Posted by Matthew_Armeni
Just upping the voltage will not change the amount of amps the motor will draw, a 9XL draws the same whether on 4s or 5s (if I'm not mistaken, I'm pretty sure I'm not) it will just perform better on 5s.
Someone please correct me if I'm wrong about this  |
I would like to take a stab at this one.
Watts=amps X Volts
Let's look at two setups both geared for 40mph top speed.
#1 runs on 4S
#2 runs on 6S
Both cars accelerate at equal rates and in a race would be completelyl equal.
The idea that higher voltage setups draw less amps relates back to Watts = Amps X Volts
Since both cars are equal, both motors are putting out the same total watts of power.
#1 is drawing let's say 60 amps at top speed. 4S lipo will be about 14.8 volts loaded. 60amps X 14.8 volts = 888 Watts of motor power.
#2 being the equal to #1 that it is, will be drawing this kind of energy to produce the 888 Watts of power. 22.2 volts under a load on 6 S
888 Watts = 40 amps X 22.2 volts
What can we conclude from this information?
If you noticed, the word "equal" was used alot in that description. If you take #1 setup and just put it on 6S without making any other changes such as gearing, it's going produce more power and draw more amps.
If your goal is to lower the amp draw of a setup, you must change the gearing to lighten the load (resistence) on the motor so it will draw less amps.
This could even involve using a different motor of a lower kv to reach this goal.
