Macca's zero fret

[rickfan60]

Here is a comparison of a 4001C64 to a 4001C64S as respects distance between nut-to-first fret v. zero fret-to-first fret:

zero fret compare.JPG

The distance between the edge of the nut to the beginning of the first fret on the C64 is 1.805" and the same measurement on the C64S is 1.950" for a difference of 0.145". The distance between the "crown" of the zero fret (string contact made) and the beginning of the first fret on the C64S is 1.825".

I used a non-digital micrometer so these measurements are not as absolutely precise as they could be. Also, things get a bit fuzzy on the C64S when trying to go from the beginning of the first fret to the beginning of the zero fret [1.795"] and then to its crown [1.825"]. It is perhaps best to take the midpoint of these -- 1.810" -- which is pretty darn close to the 1.805" for the C64 nut-to-first fret measurement.

PS -- The zero fret and its accompanying nut on the C64S do not appear to be a modular insert to replace the C64 nut. As Brian implies, the C64S neck/headstock appears to be constructed specifically to accommodate the zero fret. It is not a "reversible" mod, unless you take some drastic measures, such as: remove the zero fret, cut off a small piece of the fretboard, reinstall the nut and move the TRC down with redrilled holes.

I believe the reversible mod is in reference to Paul's bass and not the 4001C64S.

[libratune]

Which, I would think, means that the TRC has to be moved and therefore new holes were drilled in the headstock. Would this be correct?

From the picture it looks like the TRC was trimmed or the nut sits on top of it.

in reality, the TRCs are identical in size and the nut does not sit on top of the TRC.

[rickfan60]

I was taking about McCartney's not the 4001C64.