Quote:
Originally Posted by Oppressor
Generally speaking one should go as high in volt as warranted by the manufacturer(an know to be reliable) as volts help to make amps go "through" and hence power by the same token circuitry easier.
Keep in mind the ohm law:
i = v/r
i = amps
v = volts
r = resistance in ohm
Moral of the story? It's harder on a controller to to run 150 amps at 4s than 100 amps at 6s if it support it. It might even be harder to run 150 amps at 4s than 150 amps at 6s. I say might because controller are complex device that might have more limitation than simple Ohm law and that i want to cover my ass.  |
Don't forget the currency laws ($$$) and the more importanly any laws that may apply if you are racing. Current laws remain in effect limiting 4s lipo as max voltage racing reguardless of the amount of resistance you provide to the powers that be
C= 4s = v = ~r
V * x = $$
The MMM can handle the amp load 1.5d on 4s racing in a erevo geared at 50mph so you can forget all you worries and just pick what you want. PS the again in the given space and weight most people want to be in a 4s 8k config typically will net you the longest run time.
14.8 * 8000 = 118400
18.5 * 6400 = 118400 (can't usually fit over 5k) hard to find anything over 6k even if it will fit..
22.2 * 5333 = 118400 (can't usually fit over 4k) hard to find anything over 5k even if iit will fit..
As long as your motor is in the sweet spot don't expect much difference in run time.. the 4s8k setup is the lightest and the cheapest. in the bunch. Again if you go for 8s and up it's another story but that story involves a lot of $$$$$.
good formulas?