warping wheel length calculation

Is it my imagination, it seems like a couple of years ago someone posted a table of the rotations that yield so many yards.....I've looked thru the files and gone thru all the warping wheel questions...but don't seem to see it.  Does that table exist?  I know, I know, I am off to figure out my own small calculation for the project at hand but I've found seeing how other folks look at equipment makes me smarter!  thanks if you can provide a link or a search phrase for that elusive table of info!  Deb