Quote:
"For a 3D prop I am looking at a 19x7. I can go with a 19 x8, or 20 x6 or 7 if I need to as well. I don't think there will be any problem loading the motor where I want to? Am I missing something here? "

The sort of thing I meant was : Ground clearance with bigger diameters. Expense---I always seem to end up with a nice collection of three or four pristine unsuitable props and a couple of chipped tipped and scratched good ones!