The design is made up of a very secure "ball" that protects the electronics and attaches the arms, making it extremely crash proof.
The arms are reversible
so you can fly with some motors facing up and some down, all the while maintaining the correct thrust line.
The Electronic Speed Controllers (ESC) have their own mounting boards, with appropriate mounting plates.
The Motors lie inboard of the arms for additional protection.
There is a LARGE battery bay with mounting strap holes.
The electronics platform, is large, to accommodate even the most complex installation.
The Design is also fully modular
for easy replacement of parts.
No glue is used. There are some nylon bolts for easy assembly and changing out of parts / sections of the Quad Copter.
The fiberglass board and my design makes for an extremely strong and high crash resistant Quad Copter.
or any other suitably sized camera can be mounted directly to the top or bottom, of the Quad Copter.
A Sonar sensor has it's own mount place, on landing gear, with clear visibility of the ground
The whole structure is VERY LIGHT
and hence gives increased flight time.