NH34 issues

So somehow I've managed to strip the quickset function for the GMT hand on 2 NH34's in a row. 馃が馃檮馃.

The first one I thought it was a manufacturer issue. But now I'm thinking it's operator error.

I've done one other NH34 built with no issues. The GMT hand was far and away the easiest to install. But somehow this time I'm screwing it up.

Any common mistakes anyone knows that will cause the quickset to strip. Pressing the hand too hard? Not fitting the dial correctly? I don't know but it's going to be get expensive quickly if I don't stop.

Reply
ayadai

Your image is too low resolution for me to make out what may be stripped. Please upload a higher resolution version if you can.

FWIW, I've yet to strip anything in a quickset mechanism. Come to think of it, I've not stripped any mechanism in a long, long time. Don't forget the first rules of watchmaking:

If it's hard to turn or does not want to go into place:

  1. STOP!

  2. If it's corrosion free, reassess and analyze until you find out why;

  3. If it's corroded, free it with chemicals and gentle working, clean it, then go back to #2.

Image

Is this better?

ayadai

Your image is too low resolution for me to make out what may be stripped. Please upload a higher resolution version if you can.

FWIW, I've yet to strip anything in a quickset mechanism. Come to think of it, I've not stripped any mechanism in a long, long time. Don't forget the first rules of watchmaking:

If it's hard to turn or does not want to go into place:

  1. STOP!

  2. If it's corrosion free, reassess and analyze until you find out why;

  3. If it's corroded, free it with chemicals and gentle working, clean it, then go back to #2.

I'm pretty good about not trying to force anything. But I figure 2 in a row can't be coincidence. The quickset worked well when I tested it before I got started. But once I installed the GMT hand it would just slip like it wasn't engaging. The quickset for the date works. Just not the GMT. It seems to turn when I pull the crown out to set the time. Just not for the quickset. I tried it with and without the hand with the same result.

Just want to add a similar experience with NH35 movement that I had just a couple days ago. I wanted to try a new dial that I made so I build a watch with a spare NH35. I tested it before and everything worked. But my dial did not have a date window, so I did not exercised the quickset date function after the initial test.

When I build the watch, I first installed a set of silver hands, but found them hard to read because of the picture on a dial (Salvador Dali painting), so I switched to a set of dark blue hands. Blue hands helped a little, but I still was not happy with the look of it. After a couple of days I took the watch apart.

After taking it apart I noticed that the movement works fine and the date switches, except for the date quick set function. I inspected the assembled movement. It looks clean and easily turn like any other. I tried to blow out any possible dust that I could not see, but it still does not work.

I guess the next step is to take it apart and see if I can find a problem. I'm curious if you can discover the cause of your problem.

ayadai

I don't see anything stripped in that image.

The two gears nearest to the date wheel should pivot to engage with either the date wheel gear or the GMT arbor gear, depending on which direction you turn the crown.

This post by @Ichibunz shows the movement disassembled, including the obverse of the plate that contains these gears. I'd be willing to bet that the gear transport is just out of place a bit or hanging on a piece of debris.

I'll check it out! Thanks!

Did you put the little round thing under the dial?

derrellgore

Did you put the little round thing under the dial?

It's funny you would comment tonight. I literally just got the watch finished 20 minutes ago.

The dial was made for a NH35. I don't think I filed out the center hole enough and the GMT hand was squeezed, either gripping the inside of the dial, or sandwich between the dial and the movement, so tight it couldn't move. And the movement wasn't happy while I was trying to turn the quickset. I've heard movements can be a little delicate 馃槀