| Justin Stuart (RIP)|
My Posts: All Forum Topic
You can buy a whole assortment of different size resistors for only a few dollars. Try them all, and see which one decreases the spark the most and doesn't screw up the cell count on the ESC. Then let us know what you decide on. If you choose too small a resistor, it will simply burn up, while if you choose too big of a resistor, it will take so long to charge the capacitors that the ESC will think your running fewer cells than you really are.
The fact is, it is a combination of the battery voltage and the size of the capacitors along with the ESC's initialization time which decide what size resistor you need to use. It would be best to start with the smallest resistor you can find, and then slowly work your way up.
If you're good with math, you can investigate the RC time constant which will allow you to calculate the exact size resistor you need:http://en.wikipedia.org/wiki/RC_time_constant
Scorpion Power Systems
Thunder Power RC