Hi all

I have been flying electric for about 2 years. Problem being with only 1 aircraft/setup. I have the Extreme flight edge 45" and it came with an airboss 45A ESc and Torque 2818/900 motor. I coupled this with a Turnigy 4400mah 15c lipo. This setup has worked for the duration and I have had great success with it.
Problem:-
I recently bought a new aircraft and have kitted it out myself(with what i though was correct) I bought a turnigy Plush 30A esc and a Turnigy C2826-1900 motor. coupled with a 2200mah 20-30c lipo. i have tried this and black smoke came from the esc! everything was set up as normal. The motor turned for approx. 5seconds then quit.
I tried it again some time later and although it still beeps as per instructions it cant seem to turn the motor.
Have I done something wrong? Is there a formula to follow for future reference?
I have heard that you should multiply the mAh by the discharge current but this theory seems to fail my extreme flight.
eg: 4400mah x 15c = 66000 which would mean I would need at least a 80A esc. But it flies perfectly well with a 45A esc?

Hope this makes sence
christian