I just tried the Guyker 1:21 Tuning machines, I was astounded.

[silverspear]

I was looking for the gotoh 1:21 tuning machine heads when I chanced upon this Guyker brand ones. decided to buy and give it a try, since it didn't cost much.



put it on, and I was impressed with them! they had good weight, fit into my headstock perfectly, (which means the dimensions aligned with gotoh dimensions) and they stayed in tune for the 2 days that I've tried it so far. the gears are pretty smooth (2 out of 6 were abit rough, but maybe cos I tightened the buttons really tight), and it works well.


I also confirmed that the gear ratio is correct - 1:21. it took me 21 full rotations of the button to move the post by a full 360 degree circle.


only one issue is that the button shafts are not the same size as gotoh. (these Guyker shafts are slightly bigger), so I can't use my gotoh ebony buttons with them.


here's a pic!

[jaymarsch]

They look very nice. Glad that you could find something that works for you. I have Gotohs on 4 of my guitars. The older guitars have the 1:18s and the newer guitars have the 1:21s. They work really well.
Best,
Jayne

[Wade Hampton]

I’ve never heard of Guyker tuners before. Where did you buy them?


Wade Hampton Miller

[jim1960]

Originally Posted by Wade Hampton

I’ve never heard of Guyker tuners before. Where did you buy them?

I just found them on Amazon.

[Wade Hampton]

Interesting. They appear to be inexpensive Gotoh 510 copies.


whm

[b1j]

1:21 is a great ratio. I put a Waverly set on my J-45, and I like how precise and durable the tuning is.

[Wade Hampton]

A 1:21 gear ratio is nice, but what matters most is how smoothly the gears turn and how well they hold up under extended regular use.


whm

[rgregg48]

Chinese? I would assume so!

[Treenewt]

Glad you had good luck with them! I put a set of their black 510-ish ones on my first build and wasn’t overly impressed. Several of the tuners are quite stiff and while they have the look down, the smoothness is a far cry from the Gotoh 510s I’ve used. But considering your review, maybe they deserve another look? Thanks for sharing!

[Howard Emerson]

The original clipped top Grover G98's on my 1930 L-5 were 6 to 1 ratio, and they would still be on it if a worm gear loop had not broken.

21 to 1 ratio for the Guykers, eh?

I don't know if I can wait that long....

HE

[LiveMusic]

@silverspear... you have a tuner affixed under the screws? I've never seen that! Is that tuner designed for that?

I finally found this one, maybe this is it... D'Addario NS Micro Clip-Free Tuner Black. It has just one screw hole. I thought yours was affixed with two screws but looking closer, maybe it is just one. Interesting, do you like it?

[davidd]

I put a set of Guyker locking tuners on an inexpensive PRS copy and was blown away at how good they were. They even package them the way Gotoh does. Super value IMO.

[fazool]

just to be clear, as this is something that people frequently mention:


the tuners cannot affect tuning stability. The guitar cant stay in tune or go out of tune because of the tuners.

The worm gear drive is a mechanical device that is impossible to drive in reverse.

Unless it is mechanically broken a tuning machine cant impact tuning stability.

Aside from string breaking or unwrapping, tuning stability is only affected by the slack in the strings or stick-slip at the nut and saddle.

The (by far) most common is sloppy (and too many) wraps on the tuning post.

It *FEELS* like its otherwise making people believe it to their core (just like string "stretch"), but its not actually physically whats happening.





BTW those are very nice looking tuners!

[NickTuneUp]

Those look like Gotoh tuners with a different logo. Are they built by Gotoh?

[sinistral]

Originally Posted by NickTuneUp

Those look like Gotoh tuners with a different logo. Are they built by Gotoh?

They are Gotoh knock-offs.