The S500 Multi-Rotor Air PCB Frame serves as the up-gradation of the F450 Quadcopter Frame. 

 

The main great advantage of this frame is the arms have a slight upsweep, this gives the Quadcopter a dihedral effect which helps to make it very stable, especially when descending from altitude. The arms have a carbon fiber rod through the center for making the strongest arms we have seen to date in this style of frame. The Blue and black arms make orientation much easier and there is no need for different color props.

---