I received my motors and ESCs today. I found that some of bullet connectors don't really connect firmly. This could be hazardous, if just one connector fails, I can image the quad falling to a horrible death.
So I cut the bullet connectors and put 600V 30A Anderson powerpoles on each connector. It also allows me to "key" the connection so that it will only connect the 3 cables in correct polarity.
No soldering, easy connect and disconnect.
now I just have to wait for the frame to arrive.
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I soldered mines directly, had to desolder to find the correct polarity but the motors and escs didnt seem to have random cable order. After i found the right order on the left motor that turned ccw the same order was correct for the right motor.
Definitely a good idea. Good connectors, but like Taylor pointed out, can't run them back through the arms.