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Poor amplitude


RichardHarris123
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14 minutes ago, Nucejoe said:

If magnetized hairspring might be sticking so  you do get low amplitude and the watch runs fast. 

There is a free app to download on your device called  WATCH ACCURACY METER, gives you the rate and beat error, not bad it will do until you decide to buy a tg. Using it you can see the rate which if crazy fast would indicate hairspring issue such as sticking.

 

Could be this rich. A short fast swing of the balance. Do the coils look close together ? That or the coils slightly sticking together if not completely clean

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1 minute ago, Neverenoughwatches said:

Could be this rich. A short fast swing of the balance. Do the coils look close together ? That or the coils slightly sticking together if not completely clean

Yes, look close together. 

Just now, RichardHarris123 said:

Yes, look close together. 

Don't think they are sticking together, maybe magnetism. 

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1 minute ago, RichardHarris123 said:

Reply to my demagnetiser question and knock one more off.

I have one of the cheap blue ones about a tenner or so. It does work although im not quite sure how well. A couple of my dumont second hand tweezers keep getting magnetised all the time.

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1 minute ago, Neverenoughwatches said:

I have one of the cheap blue ones about a tenner or so. It does work although im not quite sure how well. A couple of my dumont second hand tweezers keep getting magnetised all the time.

I made the mistake of buying Dumont carbon steel tweezers, unusable at moment. 

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3 minutes ago, RichardHarris123 said:

Yes, look close together. 

Don't think they are sticking together, maybe magnetism. 

What is the setting on the regulator arm . Fast or slow

Just now, RichardHarris123 said:

I made the mistake of buying Dumont carbon steel tweezers, unusable at moment. 

Have they become magnetised? 

1 minute ago, Neverenoughwatches said:

What is the setting on the regulator arm . Fast or slow

Have they become magnetised? 

I picked up 14 pair for 60 quid. About half of them are carbon steel. I have to demagetise every two hours or so. I think my computer on my desk  is a bit too close tbh . You only really need a no 3 and a no 5 and maybe a couple of really fine dressed ones for hairspring work. I quite like brass but they bend a bit too easy when the tips are fine. Cousins do some titanium ones that are quite cheap i might give them a go. 

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2 hours ago, Neverenoughwatches said:

If you place a white dot on the balance wheel when its at rest,

Somewhere else the group we  we had a discussion on finding lift angle which is similar to this. I've found that using a certain type of highlighting pen with liquid ink worked much better than any other color because it would fluoresce under UV light. So you just dim the lights down and it glows really brightly and it makes it really easy to see the amplitude.

There's another way to do it but unfortunately it's astronomically expensive and no I don't know how expensive it is but I think of we would have to ask it's beyond our price range

I do wonder if we will for a clever whether we could do something similar? In any case they put a Mark on the balance arm the use a camera system to film it and then they can measure the actual physical amplitude and they can also determine the left ankle.

Thishttps://www.witschi.com/en/products/wisioscope-2/

1 hour ago, Nucejoe said:

There is a free app to download on your device called  WATCH ACCURACY METER, gives you the rate and beat error, not bad it will do until you decide to buy a tg. Using it you can see the rate which if crazy fast would indicate hairspring issue such as sticking.

The experience with This Group Has Been They Usually Don't Work the Best. And Then There Is the Other Minor Little Thing Whether You Have a Timing Machine or an App You Going to Have To Figure out How Many Beats per Hour This Is? Because the Age It May or May Not Be 18,000 Fortunately the Timing Machines Usually Have All the Standard Frequencies That It Probably Is and You'll Just Have To Figure out Which One It Is.

 

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On 5/17/2022 at 5:09 PM, JohnR725 said:

The experience with This Group Has Been They Usually Don't Work the Best. And Then There Is the Other Minor Little Thing Whether You Have a Timing Machine or an App You Going to Have To Figure out How Many Beats per Hour This Is? Because the Age It May or May Not Be 18,000 Fortunately the Timing Machines Usually Have All the Standard Frequencies That It Probably Is and You'll Just Have To Figure out Which One It Is.

It's pretty easy for software to autodetect the rate, since the error would have to be quite bad to show up closer to another standard rate.

A difficulty is that a high beat watch will look better at half the proper rate.  E.g., measure a 36,000 bph movement as if it was 18,000 bph, and it looks better.  Only one direction is timed so no beat error.  But the difference between 36,000 and 18,000 is pretty obvious.

Elgin 173 with a cell phone.  I was trying to get an amplitude near 180° to measure lift angle.

 

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