I fly Big Old Timers:
80"+ inch Powerhouse uses an Astro 40 with Superbox.
72"+ inch Buzzard Bombshell On An Astro 25 with astro regular gearbox.

Currently finishing a Sr Cadet that I converted to taildragger. It flies with the regular wing and will fly with another wing that has just a little diehedral and large flaps. Using the new big AXI motor.
Also fly a Sig Senorita with the AXI 2820/10 and it flies great.