Oh come on...

I can't make this any clearer, read other build threads. You'll see why that ESC is not suitable for a feather, it only does 8.4V max not the typical 3S ~12V or higher nearly all featherweights run on. There are many great guides that will give you a much better understanding if you just read the threads on the forum. I'd also have my doubts on that ESC actually making it halfway across the arena before smoking.