yeah, it's because the internal resistance of the capacitors that are used on the controller are near 0 ohm when unused/uncharged. the 2nd time you plugged it in, it's likely that there still was some juice in them left, so that's the reason it didn't spark the 2nd time.

If you swapped the poles on the batteries, the spark woult be quite a bit bigger..

Well i order the rong pinions 2 times, and hey dont make the right pinion so i cant use the truck. If i want to make it work right, i have to buy a 8s with the standard size shaft, and buy new batteries. Im just going to returning everything, and selling the fu*king truck, unless the fiegao 12s has the 1/8 inch shaft.

what is the problem? i got my 8S with a 1/8th shaft and i just bought some HPI pinions (i thought the ones i bought are 48p)

No i have wanderer 12s with the 5mm shaft, and they dont make a pinion with 5mm bore, and 48p

I have seen the 48 pitch pinions in 5mm shaft size. If you want to know drop me an email or pm. I don't think mike has them but he may be able to get them. You could drop him an email to see.

You can also look into replacing your spur with a 32P spur.