OK... I have an Eclipse that I installed a Hacker C50 in.
I did what I think is better ducting than I have seen others do...
All the ingoing air is driven over the motor and then thru the region the ESC is located. (Acro 90 ESC)

I am running an APC 20 x 13 and peaking at about 69 or 70 amps statically..
The plane weighs about 11.25 pounds and will do indefinite upline snaps...

But in a 4 minute flight, the ESC is warm and the motor is so hot I can't leave my finger on it....

anyone have a similar setup that is working??? With some pictures??

any ideas??

thanks!

mds