Originally posted by NOVAflier
If I have this right, at 100% efficiency, on a 10x6 prop, the plane would move forward 6" for every revolution. Right? If this is so, then I want to go with the lowest pitch possible (Such as the 12.25 x 3.75).
Yes your description of pitch is correct but of course unattainable. When power off drag is desireable to enable you to control approach better by increaseing the props diameter and reducing the pitch you are in effect reducing the propellor disc loading which will impart greater low speed acceleration (and vertical) but a lower top speed and greater drag power off. Propellor disc loading is the aircrafts weight divided by the total area swept by the propellor.
John