Y6 B Props?

It looks like the 2014 version of the Y6 only list one prop size. Are they not running the 2 different sizes top and bottom like the A model? Why?

Hi AKRCGUY,

We found improvements in the yaw stability, note that the motor order also changed.

Here you can find some post about this subject:
viewtopic.php?f=74&t=5988

diydrones.com/group/arducopter-y … -and-pitch

Running Different Props top and bottom was not efficient and the different sizes caused yaw and pitch / roll coupling. There is a pretty good discussion about it on the DIY forum