Hi y'all

It's me again with a new question. As I get a lot of great insights/advices from great well-experienced flyers.

Ok, What is better for 2 Stroke engines ranging from size .46 to .90. Revs or thrust? I have Evolution PTS .45 which is almost .46. it's installed on my Hangar 9's P51 Mustang MKII, I was told that I should install 10X7 prop instead of 11X6 both APC 2 Bladed. I told the owner of my LHS who advised me for 10X7, he said your plane would fly good, I told him it would give me more rpm's than I'm getting from 11X6, he said more rpms are better for your engine.

Correct me if I'm wrong please; more the diameter and shorter the pitch higher the Thrust? Lower the diameter with little more the pitch higher the RPM's correct?

Thrust is power of the engine to push the air back if I'm right, and more revs means more thrust? It just gets confusing if somebody can give great idea about revs and rpms, plus what is best for what engine and for planes like warbirds, P51 Mustang, Hell Cat and so on.

Thanks in advance[8D]

Mody