2S vs 3S run times?

[GO-RIDE.com]

Originally Posted by zeropointbug

Correct ME, if I am wrong. But your runtime will go DOWN when running 3s over 2s setup... higher voltage will allow more current, and thus exponentially more power (volts x amps= watts). This is according to how anyone would drive a BL truck (handfuls of throttle)... however, if you hold a constant speed (say, to hold same speed for both 3s and 2s), or drive it the same as 2s, the 3s setup will have a longer runtime.

That was my theory, but the only indication I have is that the packs I quoted are nearly the same size and weight. I'm guessing they have the same # of lipo cells, they are just wired differently. One is a 3100 3s and the other is a 4200 2s.

[GO-RIDE.com]

For conversations sake, let's say I used my above example except that:

1. I optimized each motor for the voltage of the battery and thus used the same pinion for each setup to reach my 35mph top speed.
2. As stated before I would drive each car the same pace around the track.

Would this allow the 3100 3s to have as long, or nearly as long, of a run time as the 4200 2s?

[Hickoryhead]

I think it would come down to how you drive the car.