This is off of the topic of the thread, but I didnt want to start a new one. My QC2 blew because the positive wire broke off where it connects to the esc, and it just went full throttle and started smoking. Im not sure if it should have blown under these circumstances. The wire falling off was my fault, but it seems strange to me that the esc is just waiting to blow and there is just one external solder joint preventing it. I have it set up so that the positive wire goes from the esc to the motor, and that wire is spliced and the wire that goes to the positive on the battery is soldered onto it.