"Did you ever get a resolution to this problem? I have the exact same issue 'No dataflash' and I get a hang at trying to view logs. Do I have faulty hardware? It worked when I first received it and after a firmware update. I started to calibrate the…"
"Ahaa! John, I could not see the wood for the trees! Of course, the H frame would be a perfect solution to achieving what I am setting out to do which is essentially to have as much free space between the arms going all the way back to the centre…"
"Thanks for your reply. Maybe I should have explained the reasons for such a 'retardation' but thought that unnecessary given the simple and direct question. I agree the weight may have to increase due to the joint at the the top two rotors having to…"
If weight was mainly centred and the only weight on the arms were the wires to the Motors would am M shaped frame be possible? There would likely be some flex in the lower (in the diagram) arms and maybe a brace back to the centre would be needed…