Lipo Battery question
 

will a 4 sell 5000mah 25c lipo make your car run faster then a 3 sell 5000mah 25c lipo? or just longer run times?

also i got a novak gtb esc with a brushless velocity 5.5t motor. wats a good gear ratio for speed. spur size? pinion?

i already got a 58t spur gear and a 26 pinion and a 19 pinion

More voltage, so more power. As for run times; your ESC can only pull so much current, doesn't matter how much voltage is behind it.

Need more info if you want gear ratios, ie What car, what are you racing in on, how bigs your track/straights
Will a 4s fit in your car?

i have a exceed champion pro 10 scale. 3sells fits and i have alot of space left. i dont think 4sells would be an issue. i can always modify.im not racing on tracks yet. im looking for speed. and im just driving in parking lots

use the gearing program and look through the list at rcgearing.com