is this common? Every thing works fine.....
Yes it's normal.
Stop busting my canards!
All my plugs do the same thing, pretty normal.
ok, whew. I bumped up to 5s lat night and the spark was larger LOL
I believe it's from the capacitors charging up. More voltage bigger spark.
For those of you that know, does the switch on the ESC have anything to do with this?
I think my switch is defective. It doesn't turn off the ESC. It is always on when the batteries are plugged in.
switch has nothing to do with the spark..
I leave my switch on all the time. In time you will need to bypass it anyways..
Would you go flip my truck back over??
That switch is not working right, i just leave mine on and just unplug the batteries. My switch is actually taped over to keep it from going off when i flip. The spark with 6s is really big and I was afraid it'd light the truck on fire!
The best thing to do is if you plan on using a 4s or bigger battery. Get a 2s and plug it in and power up the system and drive it for about two min then stop unplug and install the bigger lipo and it should do a kind of pre charge on the caps. And for future info you are charging the capacitor not the resistor. The resistor is use to slow the voltage to the ESC.