Alright im a starter with electric cars but not a new beginner with fast r/c I used to play with on road nitro before so Please I dont want any comments saying It will be too fast start with something slower...

I would like to know which can do the job? I want Performance and Race capability mamba max set up... for my kyosho ultima RT5

Ive noticed 4600Kv 6700Kv 7700Kv... from castle creation

How do I make my choice?

once thats settled... How do I pick the right batteries for the right ESC?

eg: 2s Lipo with 5500 mah... 40c? what the hell are those numbers?
40 current? 2cells Lipo 5500? discharge rate?

May I have a chart and explanation of all this?

the more mah I have the longer It will run?

I have a 1500$ budget but I wouldnt want to buy a 200$ Lipo that will not fit my setup...

thanks for the help

Here's the way I like to do it.

Allow the esc to determine the max voltage (number of cells) then based on the max (or desired) rpm of the motors , select the kv that will give the correct rpm with the battery voltage decided by the esc's max. Then buy the largest battery that'll fit in the battery compartment (with capable discharge current).

If using a castle esc Mamba pro version it may look like this.

The esc is capable of a 6S lipo so if we wanted a 50,000 rpm motor then divide 50,000 / 22.2 volts = 2252 kv motor. I would select a motor of appropriate size with a 2000-2500 kv and then use the largest 6S battery that'll fit in the tray.

2S lipo means it has 2 cells in series, so the voltage adds together, so you'll get 7.4v out of 2s lipo, and 11.1v out of 3s lipos. 5000mAh refers to capacity of the battery, the bigger this number, the longer run times you'll get (and more current capacity of the battery). More on the current part, the "C" rating (30C, 20C, 40C.....) is the discharge rate. If you have a 5000mAh battery that has 20C discharge, then it'll put out (5000mA*20=100,000mA, which is 100 Amps) for the 30c it'll be 150 amps. The discharge rates are estimates for the batteries.

To avoid spending $200 on a lipo, I (and many others) suggest buying them from www.hobbycity.com, the shipping might take a while if you go the cheap route, but if you pay for the quick shipping it takes only a few days, and STILL saves you tons of money.

Ok So how do I know how much rpm I need?

I know that I will be running 7.2-8.4v

for motors they are usually measure in Kv, meaning rpms/volt, so a 1000Kv motor, on 1V would give you 1000RPM. In general, the lover the Kv the more torque, higher the Kv the more RPM. The higher Kv set ups are for lighter cars, and lower Kv for heavier. Lower Kv motors usually run much cooler than higher Kv, and have a much wider range of gearing options.

personally, I go the lower Kv, for castle 10th scale is 4600. That way there is less worry of too high temps, and more torque.

Use a top speed calc or gearing calc to determine motor rpm. If your stuck with 7-8 volts then can figure the rpm the same way voltage x kv rating = top rpm. I would guess that in a stadium truck on a race track with 2s battery a 5700 combo would be nice.

If you go 3s i would recommend the 4600kv, 2s 5700.

Alright thanks all!

Now can I have infos on that programing usb thing I keep hearing about brushless configs?

you hook your car up to the computer and change any setting under the sun. including throttle and brake curves, lipo cut off voltage, starting power, "punch", etc.

and it is well worth your $,

also don't forget to get a balancing charger or a lipo blancer, if you get something from hobbycity, you can get the astro flight blinky balancer from tower for $30, is very easy to use, overpriced yes when you see it but the peace of mind and the life of your lipo or lipo's will be worth it, it was hard to swallow that i spent less $ on my lipo than my blancer (ignoring shipping)

the lug