I have a Hummingbird with brushless main and tail. The main was getting hotter than I liked after 7 minutes even after adding a heatsink. About 150 degrees.

I remembered seeing a setting for timing in the Phoenix menu and changed from the second setting (normal), to low timing (less power, more efficient) and ran again the exact same duration and checked again:

122 degrees!

Apparently, high timing for more torque, low for more speed.

Since the motor has more than enough power with the 3 cell Lipo pack, I don't notice a bit of difference except a lot cooler motor.

Just an idea.

Good tip pgitta. I just got my Phoenix and I read the timing setting thing. If I can just get helihobby to ship my corona i'll put it to the test.
Donnie

Use a smaller pinion on the motor.if you have plenty of power to spare then putting a smaller pinion on will give you better motor temp and duration.
It is morre beneficial to the user to set the headspeed of the motor using the gearing rather than using the tx to drop the throttle range as you really want that motor to run at its peak to be efficient and powerfull at the same time.
More spped is not alway more power if you cant handle the first corner!.

Yes, a smaller pinion would be nice, but the motor is over 4250Kv and the 8 tooth I have now is about the smallest available, hence the timing change.

Besides, I don't really notice a lot diff in performance. Just temp. And...lower timing = MORE efficient thus longer run times

Tell me about it. I swear if it wasn't for a first class web site, that place would bo OOB.