B4
I have a b3 and I have a cheap ezerun 60A esc and 9t motor combo in it. It's cheap and it flies. (well almost). This system should be good for your B4.
You can buy the esc at Harris and I think ferral. I dont know about the motor. I got mine on ebay for about $70.00 including postage. I got my esc at Harris for about the same (I think just under $70.00)
Terry
Last edited by Team Ash; 01-02-2009 at 06:32 PM.