The strange and perverse fetish of open-back tuners

[Drill]

Everything that is not a locking tuner is just wrong. Closed back, open back, I don't care. As long as it's a locking tuner.

[Larry Mal]

Everything that is not a locking tuner is just wrong. Closed back, open back, I don't care. As long as it's a locking tuner.

Yep.

[HarlowTheFish]

Everything that is not a locking tuner is just wrong. Closed back, open back, I don't care. As long as it's a locking tuner.

Yep.

Thirded. I get "vintage-accurate" when it's a reissue or a vintage axe, but for anything else? They're just better.

[ThePearDream]

I have locking tuners on my acoustic

[Larry Mal]

I have locking tuners on twelve acoustics.

Hey, a good idea is a good idea!

[papa_hotel_delta]

I have locking tuners on twelve acoustics.

Hey, a good idea is a good idea!

which ones? (tuners)

I would change the Waverlys on the Martin tomorrow if I didn't have to drill a hole.

[Larry Mal]

I have locking tuners on twelve acoustics.

Hey, a good idea is a good idea!

which ones? (tuners)

I would change the Waverlys on the Martin tomorrow if I didn't have to drill a hole.

I think the Waverlys use the Kluson footprint, don't they? I would go to Stew-Mac and check the measurements, but that's what I believe.

Double check that, though.

[PorkyPrimeCut]

I have locking tuners on twelve acoustics.

Hey, a good idea is a good idea!

which ones? (tuners)

I would change the Waverlys on the Martin tomorrow if I didn't have to drill a hole.

I think the Waverlys use the Kluson footprint, don't they? I would go to Stew-Mac and check the measurements, but that's what I believe.

Double check that, though.

Almost all modern replacement open-back tuners have mount holes situated around 25.5mm apart from each other. I seem to remember reading that older Klusons have a narrower distance.
The backplate on Klusons are a slightly different shape though so, if your Waverleys leave a tan line, it'll show, slightly.

Also, make sure you check the inner diameter of the tuner bushings that are on your Martin. If they don't match, or are narrower than Klusons, you'll need to make a change. Then, you'll have to check the outer diameter too.

[PorkyPrimeCut]

This might help, although the Klusons in the diagram aren't the new "Prestige" line...



I have the "Prestige" ones so can give you any other measurements, if you need them.