[x-y]

all depends of the scale of you use...... but if you use the correct config all this setups are perfect for race and win:

1/10 1500-2500gr .................... 2-3s
1/8 2500-4000gr ......................3-4s
big monsters 4000-6000gr .......... 3-6s
big scales 6000-10000gr .............4-10s

of course all depends of the circuit and the top speeds ...... if the top speed of your track is 25-30mph you dont need much voltaje because is innecesary ....... but if you need big top speeds is better if you use more voltaje........and

+voltaje and -mah = +speed and -temperature = same run time