1/5 Brushless 4wd Conversion

The location of the 1900 ZR is

http://www.fastelectrics.com/blmotors1.asp and scroll to the 1900ZR. Ignore the cooling jacket.

A couple of things;from the data logs most cars actually run low average power levels. Typically spikes hit 110-140 (6.5-8hp) but the average is around 15-20 amps.

Petrol vs electric - no brainer electric comes out of turns so hard because the car has a torque to weight ratio double a petrol motor, and it takes less than 0.05 seconds to arrive versus waiting for a petrol motor to spool up. That also means it hits top speed sooner so your approach to a corner is smoother because its a constant speed, not still accelerating.

Before you settle on cell count and capacity I recommend a data logger. For $90 you will know all about the power system and how it is going work. The economy you can find using 12 cells + shorter ratio vs 10 cells + taller ratio and other options like, cell heating, ESC operating frequency, timing, throttle exponentials, bearings, different tyre and wheel combos is stunning.

BTW dont be fooled by cheap cells. In bashing the difference is invisible in racing the difference will be apparent as soon as someone uses a better cell. Better cells have more actual capacity available, higher voltage, and hold up a lot better int he second half of the discharge. Another reason to get the logger as the differences are real and try just one pack at a time and work up.

BTW quick release packs are not that hard to figure and you will be miles ahead. :-)