That is correct, I got this info directly from Arrowind. The E-Max factory is Yin Yan Model Tech Manufacturing in Shenzen, China. I've been using quite a few of the E-Max 2820 and 2826 motors with zero failures so far. I have heard of a few where the magnets came loose, but you can always strip them when you buy them and check this out.
I use the 2820 in my .40 engine size stunters on 11 x 5,5 props, and even 12 x 6, and the motor is hardly warm after the flight. In hot weather around 32 degrees C, I have felt that they get a little warmer. The air just seems to get through very well for good cooling. The other day I was testing to see what rpm I would get with a finer pitch pusher prop, and I was a little lazy to change the motor wires to reverse the rotation. The motor got hot quickly, so I reckon that it's due to good airflow through the casing. The motors tend to have a bigger diameter instead of longer length like the Scorpions, so maybe the air goes through easier?? This could be an advantage for bigger diameter as opposed to longer length. I've read the arguments about torque for those two designs, but cooling is a real important factor as well. Ask me how I know!!
Keith R
Topic: E-Max / Arrowind (Read 802 times)
