gmt

[Nunez. Jacob]

has the gmt 2 always been by directional from 90s and up

[Dsmith1974]

Do you mean the quickest hour function? That was introduced on the GMT Master II. Or the bezel has always been bi-directional.

[sillo]

Yes the GMT bezel has always been bi directional. 4 digits had a friction bezel. 5 digits had 120 click. 6 digits have 24 click.

[Nunez. Jacob]

is it easy to change to unidirectional

[sillo]

Originally Posted by Nunez. Jacob

is it easy to change to unidirectional

Any reason you want it uni?

For a 5 digit GMT you can. Just replace the click spring with a sub click spring and it'll be uni directional.

[Nunez. Jacob]

Originally Posted by sillo38

Any reason you want it uni?

For a 5 digit GMT you can. Just replace the click spring with a sub click spring and it'll be uni directional.

old habits lol yes 5 digits didnt know it was that easy

[Austin in Japan]

Strange question, but yes, the GMT has always been bi-directional, ever since it came out in 1954.

Is somebody trying to sell you one that's uni-directional?

[sillo]

Originally Posted by Nunez. Jacob

old habits lol yes 5 digits didnt know it was that easy

Yup, the only difference is the end of the click spring is bent to allow the bezel to move in both direction while the sub spring is just straight.

[Austin in Japan]

Originally Posted by sillo38

Yup, the only difference is the end of the click spring is bent to allow the bezel to move in both direction while the sub spring is just straight.

That's a great and informative illustration, Sean!

[Dsmith1974]

Originally Posted by sillo38

Yup, the only difference is the end of the click spring is bent to allow the bezel to move in both direction while the sub spring is just straight.

Thanks. Often wondered what the difference was to achieve bi/uni.

[sillo]

Originally Posted by Austin in Japan

That's a great and informative illustration, Sean!

Originally Posted by Dsmith1974

Thanks. Often wondered what the difference was to achieve bi/uni.

can't take credit for the pic, just my googling skills

and for anyone who finds this thread in the future the image only holds true for 5 digit bezels. The newer watches have some ball bearings involved.

Here's a shot of the 6 digit GMT bezel assembly

[Wobbly]

The bezel came off my GMT 16713 a couple of years ago, lucky I saw the bezel fly off, but the click spring was gone.

I took it to a local jeweller and asked if they could refit the bezel.

I received it back a couple of day latter all sorted.

Only after reading this thread, I've realised its Unidirectional now, guess they used the click spring from a Sub.

Feel a bit of an idiot for not noticing, still it will get sorted next time is serviced.