Originally Posted by efx
I usually don't let the heli cool down. I just change the battery and go again. Motor gets hot since it's for a 2s and esc a bit, but by the time I finish swapping batteries they seem fine. There's no way I'm going to sit there and wait 5 minutes for these things to cool off. A minute or two okay, that sounds reasonable, anything more I won't bother doing. It's been fine so far. I guess it all depends on the setup like what esc and motor you are using. I'm not sure I just test them as they are.
You know efx I'm kinda thinking it's the esc, because I have two other 250s that I just change batteries and fly, with no real problems. These helis have Detrum esc's instead of Turnigy, I do have a spare Detrum esc which I plan to solder up and test today. I hate electrical problems because by time you find the source you've replaced the whole heli.