wittman tail wing w8 math 

what engine do you got? cruise speed 75%? Nice paint job!!

I would've given you a thumbs up, but there was way too much wasted film of an aircraft in-the-distance. More close-up action would be appreciated....

Is this tailwind for sale?

What is the " math" in the title? I just purchased a W8 with W10 wing. Have one flight in it.