Large Model Association Forum

I understand the various measurements of propellers with the diameter and pitch as a numerical value. I don't understand the alphabetical value of pitch on some of the large diameter propellers. For example, I'm looking at the moment at 24" prop but the pitch is either A or B so therefore its either 24 X A or 24 X B.
How does this work? Can it be compared to a numerical pitch value?

Many thanks

Have a look on this website Stuart. I think will tell you what you want to know.

Tony.

http://www.chiefaircraft.com/rcmsec/Mod ... /Vess.html

That answers it, thanks Tony.