RickV

I am new to racing and just bought a slash 2wd to race in the stock class, I have a quesion on batteries, the 5000 to 5500 50C lipos that I observed most guys using are $100 to 140. I dont have that kind of money to spend on batteries. Can I still be competitive using a 3000 to 4000 50C or 60C battery at half the price?

Thanks, Rick

D-Rek07

iTrader: (1)

Well I'm not sure where you can get lipos at half that price but it would be fine if you can. Go for it.

RickV

I meant that the batteries with 3200 to 4000 mah 40C or 50C were close to $50 to $60 versus the 100 to 140 range.

racer53

one thing to keep in mind is yyour run times will be shorter as you decrease the -Mah

slackomatic

I noticed you are going to be running that slash in "STOCK CLASS". I obviously dont know what your stock rules are but a lot of stock class rules have like 17.5 BL motor regulations on them and I dont know many BL motors that need a 50-60c battery. You might could lower the C rating and get cheaper batteries.

My slash is running a novak ballistic 17.5 and I only run 2s 3700mah 25c. And I run 5min heats and 10min mains. I am able to recharge the same battery in between heats with no problem.

Matt Ward

iTrader: (23)

In your case I would get a 5000 mah pack with a lower c rating. Chances are you wont be able to use all of it anyways running in the stock class.

slackomatic

http://hobbyking.com/hobbyking/store...dProduct=14327

here is a 5000mah 30c. This should run the slash in stock class no problem.
You might be able to run a little low C rating but without knowing what power plant you are using I dont want to recommend anything lower.

pyro18t

iTrader: (1)

HobbyKing.com for the win!!!!!!

RickV

It is the stock 12T 550 traxxas motor

slackomatic

I assume you have the xl5 stock ESC. and the specs for it are.
SPECS: On Resistance Forward: 0.007 Ohms
On Resistance Reverse: 0.014 Ohms
Peak Current-Fwd/Rev: 100A/60A
Braking Current: 60A
Continous Current: 14A
BEC Voltage: 6.0V DC
BEC Current: 1A
Power Wire: 14AWG/ 5"
Input Harness Type: 26AWG/ 9"
Transistor Type: MOSFET
PWM Frequency: 1600Hz
Thermal Protection: Thermal Shutdown
Single Button Setup: Yes
Motor Limit: 15T (540 Size), 12T (550 Size)
Input Voltage: 4-8 Cells (4.8 to 9.6V DC)
Weight: 3.07oz (87g)

Says the peak current is 100A with continuous of 14A. So if you wanted to run 5000mah and 30C thats a max current draw of 150A. (30x5=150)
With that said a 20C 5000mah would be max draw of 100A which should be enough but it might heat up the battery so to be on the safe side I would run no less than 25C.And that would give you max draw of 125A on a 5000mah at 25C.( 5x25=125 )