For reference, the bracket is 23cm wide. I printed it "on end" and again is almost the tallest object the ORION can print.
What is it for? Well, that's the ~$2000 gamble

I'm betting about that much money that the printed ABS bracket is strong enough to hold this:

Again for reference, the main rotor blade is 55cm in length.
I still have to print a tail fin stand-off, but otherwise I'm very happy with how it turned out.