Electron! Sorry to hear of your troubles....but what size ESC are you useing. Im useing the Don's wicked 4800 and a CC54ESC with a 2200 3s and the thing just screams! Even with the 2200 batt I wouldnt dare go over a 3-4min flight cause it draws so many amps.
The CC54amp is only rated for 3s but sometimes(more often then not) I through a 4s in her and OH my God!!! It has to be reaching 90+mph. wish someone could Doppler my Vid.
As for the cooling question Psycho Synapse. Go back some pages and youll see pic's of how I openned two holes into the airduct so that the battery could be moved back and that the hot air can be drawn into the intake. This also requires an even smaller hole in the canopy. 1"exit hole calls for a 1/2" entrance hole. This creates a vacume and holds the canopy down.
Out of boardom and still wanting even more speed, I covered the entire plane with packing tape. WOW! does it ever go now

I did this first with my T-45 and it made such a huge diffrence I just couldnt resist. Im glad I did. Now Im going to add even sharper leading edges with plastic styreen. That should get it over the 100mph range for sure.
Trevor