Here is my current test frame that was cut down to 3.9oz. I added some green tape on the front for orientation and the KK2 LCD is topside. The 3s 1300mAh ParkZone battery weighs 3.2oz and also acts as the base until I get a successful setup. The flat carbon bar allows me to tape the frame to the quad.

The 18oz mini quad has the following weights:[ul][*]Quad Frame RTF = 10.9oz[*]ParkZone 3s 1300mAh pack = 3.2oz[*]EPP shell = 3.9oz[/ul]