Quark fried, blown capacitor...

[wallot]

If adding CAP bank to ESC isnt bettter to add just one cap with higher capacity? like 2200uF? they even have lower ESR than thesmall ones.

[zeropointbug]

AAngel: Yeah, I know that even switching from a Feigao to a Neu or Lehner will make a huge difference. I too, like to consider that (80 to 90%) as being twice as efficient. But I don't really want a Feigao motor like you said, I want a Neu with a very low Kv, and run as high voltage as I can on my Quark (hopefully that is 6s if better/more caps help) to KEEP the same power as a ~7Xl on 4s. I would prob run 6s/5000mAh.

6s doesn't always mean extreme power... 6s on the 1512/2Y is 30,000rpm, and how much torque does it have? Same as an XL Fiegao? It won't be crazy at all, IMO.

Wallot: Using smaller is better than using one large one because the larger you go the worse the ESR is relative to their capacity rating. Typically. 220, 330uF caps are a good size to use.

[BrianG]

Originally Posted by wallot

If adding CAP bank to ESC isnt bettter to add just one cap with higher capacity? like 2200uF? they even have lower ESR than thesmall ones.

One large capacitor has less surface area than several smaller caps of the same total value. This helps the caps shed the heat better. Also, don't forget that you combine the ESR values of several small caps just like resistors in parallel so the effective ESR will be about the same, if not lower, than one larger capacity cap.

So, to get 2200uF, you would need ten 220uF caps in parallel. Then, if each of those 220uF caps have 0.01 ohms of ESR, that would equate to 0.001 ohms total.

Smaller caps may be easier to physically install as they can be arranged in any formation to make it fit. The only downside to use multiple caps is the wiring hassle.