ORIGINAL: Harry Lagman
Fadi, as a guide, the AX .46 should do around 12,000-12,300 with the APC 11x6 at peak and should exceed 13,000 rpm with an MA 11x6.
The numbers in the review I saw indicate it peaks in torque and horsepower at about 13k, so either 11-6 or an APC 11-5 sure seem like sensible choices for when you want a fair bit of disc area and pull but are not flying a slower 3D type of airframe. For some more pitch speed (and it seems that is one wish for the Four Star) the 10-7
might be the ticket.