RE: OS 33GT Gasoline Engine for Pattern
One of the guys at my field is flying BPLR's last WC's Axiome which is YS175 powered. Oliver is using the same prop as I am using on the 33GT, 20 x 10.5 PN APC.
I now have a side by side comparison of both powerplants. Other than sound and exhaust smoke, there isn't any difference in performance