I think i would be looking into stronger motors and different pitch rotor blades. sounds like you are exceeding the capabilities of both. or you could try 4 cell lipos if your esc can handle it. but i would still be looking at bigger motors and rotors.

Hi, thanks for the feedback!!

This is an old thread so I decided to delete my post here and create a new thread.

I am building a new Octocopter, and now is the time to put the right combination of Motor-ESC-Prop-Battery.

I know this is a tall order, but what would you put together to lift 15lb - 25lb and fly for 20min?

Thanks Again!!

Anthony