Devil is truly in the detail and there are days when progress slows to a snail-pace as a variety of different fixes are tried out. In the event ~ apart from putting my back out as I lean over ~ I decide to remove the battery-packs topside to simplify matters. This in turn allows the phone and drone to be close-coupled, and by way of attachment I use a pair of angle-brackets at each corner. One is secured using the 6mm bolt at the end of each cantilever, whilst its opposite number is simply riveted to the framework.
These brackets suit M4 bolts and have to be drilled out to fit an M6. Out in the field they could be attached with nuts and bolts though we'll likely use cable-ties instead. Deceptively strong, they are used as hand-cuffs for unruly passengers; so it won't be the first time they've taken to the skies.
