I was going to start a new thread but might as well just pick it up here.
My question is this:
What is the best way to determine 3-bladed prop size coming from 2-bladed? It's not very cheap to really experiment with the carbon props so I'm wondering if there is a way to truly give a good comparison between them. For example, if I'm running a 21x14 2-bladed prop, how do I figure what size 3-bladed I should run? Do you reduce diameter by one and pitch by one? So, does a 21x14 2-bladed equal a 20x13 3-bladed? I realize how the prop performs on a specific airplane will vary but if one likes the way a 2-bladed prop runs, how does one figure out how to replicate that with 3 blades and gain the braking without running a $100 per prop experiment?
Thanks!