Hopefully someone isn't flying the bottom of a loop near stall
speed. Isn't the minimum radius turn going to be accomplished at
corner velocity and max-G pull?

Yes, turn rate (or time in the pull) is also a factor and max turn rate
and min turn radius are maximized if married with max available radial g
at corner. You should actually throttle up if you're behind corner!!!!


Question: how does one compute or determine cornering velocity for a
specific aircraft? Must that be done through flight testing, or is there a
mathmatical relationship to the stall speed/etc?

Specifically, does anyone know the cornering V for a Decathlon 160-CS?

Thanks!