Jump to content

Which...Weishi or watch?


Recommended Posts

I got a Weishi Timing machine the other day.  I have two seemingly identical watches but inside the movements are slightly different.  One is a C11KAS1 and the other is a C11KAS-2.

Putting them on the timing machine yields two different beat rates: 19,800 and 21,600.  Ranfft says 19,800, so I figured there was a problem with my new timer.  Ugh.

I put them on the Vibrograf which is old and probably out of calibration. Got some noise.

Next, I went back to first principles and put each watch on my piezo/amplifier sensor and monitored the performance on an oscilloscope. 

Drum roll....

The Weishi got it right.  The two watches indeed have different beat rates.  Something is wrong with the 21,600 watch though because the waveform was nasty.  It has not been cleaned, so that will be the first step to debugging this.

I had a little fun with the title of this post...sorry.

Edited by LittleWatchShop
Link to comment
Share on other sites

On 6/17/2021 at 12:40 PM, LittleWatchShop said:

The Weishi got it right.  The two watches indeed have different beat rates.  Something is wrong with the 21,600 watch though because the waveform was nasty.  It has not been cleaned, so that will be the first step to debugging this.

somewhat disappointed with your question? Haven't you figured it out? Some of us really like naked watches and naked okay like pictures of the timing machine. You ask a question you tease us and no picture very very sad.

one of the problems we have in watch repair it is lift angles and watch frequencies? These newfangled timing machines didn't come into existence until when? Basically the 30s when they got vacuum tubes but they could measure amplitude not without our oscilloscope so we don't get lift angles until the new new with a silver newfangled timing machines come into existence so everything in the past we don't get frequencies or lift angles.

One of the things I like to do is if the watch in question is at all running put a little oil on the escapement. Don't worry about the watch being dirty it's not like you got run its next 20 years and it's a disintegrate. Little oil on us and see what happens see if it looks better on the timing machine also physically look at it sometimes I'll put a drop or two of hairspring rinse on the intact watch around the escape wheel pallet fork etc. to see if I can clean things up loosen things up and then a little fresh oil. Just because and then if you can get anything that resembles nice on the timing machine then I cleaned. I was like to do pre-timing and if it looks like crap on the timing machine and I can straighten it up just to see how it looks I do that. You don't have to do it but is kinda fun to try.

Also when you have it on the timing machine it's nice to tried and more than one position just because. That's why get spoiled that work the microphone is automatic and it does six position timekeeping why can't the Chinese clone that for super super super cheap.

Link to comment
Share on other sites

50 minutes ago, JohnR725 said:

somewhat disappointed with your question? Haven't you figured it out? Some of us really like naked watches and naked okay like pictures of the timing machine. You ask a question you tease us and no picture very very sad.

one of the problems we have in watch repair it is lift angles and watch frequencies? These newfangled timing machines didn't come into existence until when? Basically the 30s when they got vacuum tubes but they could measure amplitude not without our oscilloscope so we don't get lift angles until the new new with a silver newfangled timing machines come into existence so everything in the past we don't get frequencies or lift angles.

One of the things I like to do is if the watch in question is at all running put a little oil on the escapement. Don't worry about the watch being dirty it's not like you got run its next 20 years and it's a disintegrate. Little oil on us and see what happens see if it looks better on the timing machine also physically look at it sometimes I'll put a drop or two of hairspring rinse on the intact watch around the escape wheel pallet fork etc. to see if I can clean things up loosen things up and then a little fresh oil. Just because and then if you can get anything that resembles nice on the timing machine then I cleaned. I was like to do pre-timing and if it looks like crap on the timing machine and I can straighten it up just to see how it looks I do that. You don't have to do it but is kinda fun to try.

Also when you have it on the timing machine it's nice to tried and more than one position just because. That's why get spoiled that work the microphone is automatic and it does six position timekeeping why can't the Chinese clone that for super super super cheap.

The problem is that I am still at that young enthusiastic stage of watchmaking (not chronological age!!).  When I see something that needs be addressed, I go headstrong into it without the 'scientist' in mind.  I should have taken pictures of the waveform--now mad that I didn't.  Oh well.  I cleaned it today.  Always a new adventure with a new set of noob mishaps.  No springs escaped, but the top jewel decided to see what was like to be airborne.  I knew I was hosed...looked and looked.  Oh my...there it is!! Yeah.  The way I sent it flying was just stupid practice...I will get better.  Then I had trouble winding and inserting the mainspring.  Here lately mainsprings are Vadars of my watchmaking.  I got it on the second try.

Then...the last screw...into the automatic wind plate.  Does not fit.  I know...the right screw is buried in the watch where it does not belong.  Fortunately I did not have to dig too deep.  It was the pallet fork plate.  Again...another noop screwup.  I will get better.

Got it all together with proper screws in their proper places and I put it on the oscilloscope.  Yes...waveforms MUCH improved.  I put it on the timer and it timed well and I even checked two positions.  Nice.  Excellent beat.

So, it sits on the watch bench under glass before I install the dial and hands.  I think I am going to do some work on the case before finishing.

I bought this watch and the other one (ostensibly identical) as a parts backup for my treasured watch.  Now that I know that one of them does not match the beat, I will probably sell it on ebay.

I need to spend some time refurbishing the Vibrograf.  It works, but I am not confident about accuracy.  That is a project for the summer, fall, winter, spring, or summer...I have so many projects.

I like your idea about dropping a touch of oil here and there just to see.  I have done that before but did not want to tell anyone 🙂

The mistakes I made today have caused me to push out my valjoux 72 chronograph repair.  I am just not good enough yet and it is my second most treasured watch.  I dont want to botch it.  A replacement screw that I might lose probably cost a couple hundred dollars!!

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Restore formatting

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.



  • Recently Browsing

    • No registered users viewing this page.
  • Topics

  • Posts

    • Dell fancy a challenge🤣   https://www.ebay.co.uk/itm/285785684626?itmmeta=01HT29WVJY21Q94C73GYHGBTFX&hash=item428a277a92:g:15YAAOSwNRVmBAUz&itmprp=enc%3AAQAJAAAA0DIe4QLQBW66rSyIMiyBuk8GY%2B86pQ%2BQnxGbcNq7egAGe5DIs9YMmiWJIbZtMSxwNJIiJxuojbq523IeUSBQ6pJEIQ0tfz2ChrBR03BksmKINyklg1IK4GAfAcYY9Hta9wVeSZSZN7ZCNAfZTgKs9c4%2BUIUZ3Qjc3QjUXDn2uPRo1FiYOEewMG5A26EXb%2BclBgrqtbOmM6P3bea%2F8ZImOAXNI1HtbmtMk84pIGoM6ISwaM1PKFuADtTFMccS5e3ZjndCbXYXHrW3CecsV0edw3M%3D|tkp%3ABk9SR8q588nQYw Darwin’s theory of evolution has not been proven to be absolutely.  😀 
    • A already know the size movement I have the problem is the dial a had purchased has a dimension 20.6mm wide a want to find a watch case that going to fit the dial perfectly 
    • Hi.  I would like to take issue here regarding battery driven , watches, clocks,etc. I will and do repair these clocks in fact I have sever al in my collection as well as the regular mechanical ones. I have one on my mantle piece over 60 years old tha belonged to my wife’s Aunt,  long gone Iam afraid and it has been cleaned etc and never missed a beat and is accurate. Every one has their preduices as regards Electrical /electronic Horology but I regard it as part of the progress time line of the art of Horology and to be treated as such. Like Darwin’s theory of evolution it evolved.  Two cavemen knocking rocks together and a shard broke off , looking at it he worked out if it was stuck on the end of a stick he would have a spear. Likewise his pal seeing what he was up to picked up a piece  and did the same, now that’s evolution. Some clockmaker decided to build a clock that ran with a battery and no spring to wind up and break, progress and both the mechanical and battery driven clocks evolved, the battery ones got better to the point that if it broke you changed the complete unit. Likewise watches did the same but both can be repaired by people who approach Horology with an open mind without preduice.  We all have our likes and dislikes bu I for one would never dismiss any technology because I don’t like it.   The mobile phone is a good example of modern technology at work as is the automotive industry. There buttons and switches in my car I don’t use because to me they are not nesessary but I still drive the car.
    • I haven't gone through all the reading of what it might be or not. The first thing I would do if nothing obvious stands out is replace the mainspring, you have to start at the source of the power. Nine times out of ten that is the problem.  
    • Haha. You're just in a wicked mood today John 😅
×
×
  • Create New...