I built this upscale of an Estes Advanced Target Drone after building a clone of the original and finding that Excelsior made upscale decals in this size.  It was a little more challenging than other upscales that Ive done, insomuch as I made the body shrouds out of 1/16th ply, and designed to build it as a 3x24mm cluster while I was at it.  The added motor mounts are parallel the to the main mount in the shrouds.  It came out a little heavier than I'd hoped, at 13.5 oz, but it should fly fine on 3 D12's or a single E30 composite.