Spaced,
Don.t see any replies! and I have no experience but perhaps a possability.
Disk loading equates to lift.
When considering lift on a two wing airplane the word is that biplane
lift would be 80% of the same area as a monoplane.
Probablt similiar with a coax Gyro.
A factor> the further apart the rotors are the greater their lift.
Good luck, have fun!

Hal deBolt [email protected]