The idea is pretty simple, keep the battery as close to the Center of Gravity as possible. So I created the spacers so I could place my PDB & Flight Controller in between the bottom plate and center plate.
This is the minimal top plate for racing. No need for a seat? No need to carry that extra weight around. This also has little "wings" to help protect the SMA /RP-SMA pigtail from bad crashes.
Link to other aspects of this Minimalistic Build:
Camera Plate: http://shpws.me/L62p
Non-GoPro Top Plate: http://shpws.me/L62m
GoPro Top Plate: http://shpws.me/L62c