Valjoux 7750 screw in crown
Valjoux 7750 screw in crown
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Discussion

Revs_Addiction

Original Poster:

2,090 posts

255 months

Saturday 5th February 2011
quotequote all
Dear All,

Is it common for the crowns of the above movement to sound/fee/ very dodgy when screwing/unscrewing them?

When you unscrew it, you can hear a clutch clicking; and when you screw it back in it doesn't feel right at all, like it's catching on something inside. There is some grinding and clicking and there is too much resistance.

I've been told that's just a spring behind the crown, and that, 'they all do that sir', but before I kick off, I just wanted to make sure that they don't actually all do it!

Cheers!


bry1975

1,246 posts

187 months

Saturday 5th February 2011
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Nar doesn't sound right!

What's the actual watch model?

CardShark

4,249 posts

203 months

Saturday 5th February 2011
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All of my crowns turn smoothly when winding in or out, regardless of the watch/movement. As bry has said, doesn't sound right at all.

Revs_Addiction

Original Poster:

2,090 posts

255 months

Saturday 5th February 2011
quotequote all
Cheers guys,

Watch is a Glycine Combat Chrono. It doesn't feel at all right to me, as none of the other watches I own with screw in crowns feel like this, whatever movement they've got. It just doesn't feel, 'right' at all. The crown itself works, winds mainspring, pulls out and sets time and date perfectly, but when screwing it down, or unscrewing it, it feels horrid frown

bry1975

1,246 posts

187 months

Saturday 5th February 2011
quotequote all
Sounds like the watch might have a tiny amount of grit/crap around the crown threads or shoulders?


If you have some blu tack you should unwind the crown and carefully clean around the threads and crown shoulders, you'll be amazed how much crap is picked up often invisible to the naked eye.


Bry

Revs_Addiction

Original Poster:

2,090 posts

255 months

Sunday 6th February 2011
quotequote all
Thanks for the feedback,

Unfortunately I'm sure it's more than dirt on the thread. It's definitely metallic, and feels completely different when winding the crown down, as opposed to unwinding it...

andy_s

19,816 posts

283 months

Sunday 6th February 2011
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Bit of a crossed thread? Is it smooth when you wind it out?

Revs_Addiction

Original Poster:

2,090 posts

255 months

Sunday 6th February 2011
quotequote all
When I wind it out it's smoother, but there is a clicking, that feels/sounds similar to the clutch to prevent overwinding the mainspring when manually winding an auto, but much louder...

Ikemi

8,610 posts

229 months

Sunday 6th February 2011
quotequote all
The crown on mine will unwind until it is fully unwound and begins to 'click' - If I turn the crown the other way it manually winds the movement and there is a resistance and some noise, but when I push the crown back in and turn to lock it down, it is smooth.

I've made this video for you to hear the noise mine makes - It's similar to yours, in that it's a Glycine with a 7750 smile

http://www.youtube.com/watch?v=6AqRMnFYLCY

bry1975

1,246 posts

187 months

Sunday 6th February 2011
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Do you have a local AD or local mate with a similar Glycine?

Revs_Addiction

Original Poster:

2,090 posts

255 months

Tuesday 8th February 2011
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I've not got a local Glycine owning mate, and the nearest AD is Jura frown

HUGE thanks Kris for taking the time to make a video for me! VERY much appreciated.

As I thought, mine sounds very different. Your's sounds nice and smooth when screwing in/out, complete opposite to mine.

Mine sounds very much like it's still engaged to the mechanism when being screwed down or out, and it sounds very unhappy about that fact!

Edited by Revs_Addiction on Tuesday 8th February 16:59

paulrhodes

1,825 posts

246 months

Wednesday 9th February 2011
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Interesting as my Ward C40 has the same issue. I put it down to something I was doing when adjusting the time and if you move the hands back and forth and try again it normally screws in smoothly.

If there's something untoward though then I'll call CW tomorrow.

bry1975

1,246 posts

187 months

Wednesday 9th February 2011
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Sounds like the stem might need adjustment tho difficult to say without examination.

Bry

Edited by bry1975 on Wednesday 9th February 20:02