Features：

1. The material of frame is the customized pure 3K carbon fiber and military grade epoxy fabrication , during the processing of cutting material, there’s some cutting angle left, this ensures the strength of the frame and maintain the toughness as well. The undercut angle at the side of frame arms would reduce the hitting damage. Using 171 glue from 3M on the arm side before assembly could make the frame more durable.

2. To maintain the strength of the arms and decrease the windage，we made the height of frame 5mm and cut the width of the arms,(the minimum width is 10mm), besides, we offered the holder for high-resolution cameras at the upper board. Certainly, if you have no needs for cameras and your battery size is tiny, you could assemble the cells at the top board instead of bottom board, in this way, it can not only decrease the damage rate of cells, but also make flying drone more reflectively because of the closer distance between the drone core and orthocenter.

3. Regard to the worn problem of 4 arm outer angles, GOPRO cameras, and MIRCO lens，we specially offered 3D drawings for TPU protection shell of GOPRO camera /RUNCAM MICROSWIFT ,you could find the STL documents and download them by our website)

4. For the stressed pillar, we constantly use the previous 3B designed high-grade customized special Aluminum material, and added buckle connection, it efficiently connected the upper and bottom cover, complete the drone as a full part, pretty and enhanced the total strength.

5. We made Finite Element Force Analysis during the design process of frames, ensures reasonable structure, balance the pressure and decrease the frame weight .(the net weight of the frame is just 72g)