the plane will pull pretty good with an OS 46,
Agreed. And the OS 46 (SF/FX/AX) is roughly equivilent to a 70 four stroke.
Don't get me wrong, the Tiger will fly fine on the 52, it just won't have much vertical. And a Tiger 2 with limited vertical is like a 6 cyl, automatic Mustang. Ya know what ah mean?
Jim