Octo H Frame Motor Mixing

@ACPUK wrote:

Randy , OXINARF
Moving the topic out of Copter-3.5 Testing List as this is diverging from topic.
http://discuss.ardupilot.org/t/copter-3-5-testing-list/14497

First off here is an image of the aircraft we fly, in case I am wrong but I believe this is called an H8 or Octo H

We have been flying them with Octa firmware Frame = H. Please correctly me if this is incorrect.
Also the motors are setup the same as Octa as we discussed on the forum a year or so ago.
Now Randy has confused me saying “I think the difference between an X and an H is just the direction of the propellers”
My understanding, again correct me if I am wrong, the main difference is the motor mixing.
As the inner motors, are 50 %closer to COG than the outer motors. Therefor they need 50% less rpm to rotate the aircraft on pitch to the same radius as the outer motors. I actually thought this was the other way around as I am thinking of leverage but I was corrected of this on the DIYDrone forum some time ago. Making the motor mix look something like this:- Note this is from Clean Flight, I never actually found the syntax for Arducopter
mmix 1 1 -0.912 -1 -1
mmix 2 1 0.912 1 -1
mmix 3 1 -0.912 -0.333 1
mmix 4 1 -0.912 1 1
mmix 5 1 0.912 -1 1
mmix 6 1 0.912 0.333 1
mmix 7 1 0.912 -0.333 -1
mmix 8 1 -0.912 0.333 -1

Or have I completely got this wrong?

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