[gbanger]

That certainly is a big motor, did you buy the Spruce Goose mate?
I suppose you get what you pay for Frank... HK stuff is more than reasonably priced and is certainly a good financial option, but I guess if you want the good oil... you have to pay for it.
I love the smaller stuff HK produces but once I go 6S or higher I personally won't go near any of their motors.
I only use Hacker, Eflite or OS Motor for the big stuff.
I've got one of those K Force ESC's and it is a gem.
I wouldn't get overly concerned about the size of the wire on the spark arrestor, it really doesn't carry any current.
I don't use spark arrestors, they are a bit of a wank actually, the big "CRACK" you hear when you connect your battery tells you that everything in speedie/motor world is doing what it is supposed to and is ready to go, it doesn't cause any issues apart from letting you know you have connected your battery!
I cant explain it to you in detail but next time you see Dave down at the field ask him to tell you all about it as he is our resident Electronics Guru. (So are you Claudio)
Gazz