This is my latest creation - a 4 inch sub 250g Race Drone. Following the experience of my 65mm Drone Design, this is the big brother!

I start testing with a 850mAh 3S HV battery. I hope, I find a not too heavy 4S battery later. I use XING 1507 3600KV motors and they seems to fit pretty nice from the size and power.

Will test this thing over the weekend. Hope, it flys well!