R/C Tech Forums - View Single Post - Why is 6s easier on an esc compared to 4s

07-22-2010 | 11:10 AM

#43

williamw

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Quote:

Originally Posted by UK.hardcore

a 25c vs 40c will not likely run longer.

it will have more voltage drop under load.

so a 40c will make the car accelerate faster.

This is true, but...

At the power level of current motors used for 1/8 scale this would not be very noticeable IMO. 1/10 scale racers can probably feel the difference running on 2S or 7.4 volts.

More CURRENT is needed at the lower voltage so a more efficient battery (Higher C rating) is needed or too much heat will be generated because of higher CURRENT draw to overcome the higher internal resistance.

Any more questions on CURRENT draw and how important it is? Whats needed is a speed control that will show the voltage drop and CURRENT draw during a run. Will the Eagle Tree system work at high amp draws?

Last edited by williamw; 07-22-2010 at 11:21 AM. Reason: More info added.

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