PHOTO:

DELTA WIND:

Named the Delta Wind for its triangular-like shape.  Each of the three phases are hooked together in a triangle arrangement (See the diagram above).  Phase one uses terminals A & B, Phase two uses B & C,  and Phase three uses C & A.  The Phases are 120 degrees out of a phase with each other. 

The Electronic Speed Control (ESC) sends power to Phase one, then it waits 120  degrees and sends power to Phase two, and at 240 degrees it sends power to Phase three.  At 360 degrees (120 X 3) the whole process starts over again. 

MEGA Motors run direction is reversed by swapping any two of the three power leads.  A, B, and C are power (HOT) leads. 

Y-WIND:

Named the Y-Wind for its shape.  Each leg of the Y is a Phase and the center of the Y is common.  The Y-Wind typically has a higher winding resistance because two windings are in series for each Phase.