I guess I should have used the word standard spacing. I have a trembucker Screamin Demon that I like, but wish to experiement with a pickup that is not F spaced.
If the F spaced pickup is 3mm longer, wouldn't you either need to use more wire to equal the number of turns, or less turns to equal the amount of wire of the standard spaced pickup? At 5000 turns, that is 15,000 millimeters variance.
Using the Screamin' Demon as an example, Does the Trembucker have the same number of turns or the same length of wire? Are they the equivalent in resonant frequency and DC resistance?