Quartz movements - Part 3of3 (plus Tuningfork Bulova Accutron)

[@Kevins-Philippine-Retirement]

I am am a retired electrical engineer and have worked closely with mechanical engineers. Your explanation was straightforward and concise. Thank you.

[@mreza84]

6:47 Interesting draw 😊

[@neohabilis7412]

best explanation i have found for the tuning fork mechanism. thank you!

[@rustyosgood5667]

Love this video and your excitement about the Accutron. I am a collector and am a novice at repairing them. However, the indexing mechanism only uses 1 moving spring (mounted to the tuning fork) and one stationary spring. There is a very good video elsewhere here on YT to describe how this works.

[@luke8443]

This kind of tech in a wristwatch just blows my mind.❤❤

[@BernardoSilva-ex9gc]

you ahve to see a parachute schiking ssytem ina mejcnic watch

[@lobdsk]

Thanks for this in depth video on these movements. They are the pendulum or middle movements from mechanical to quartz. They incorporate both parts making them quite unique. They have have soul.

[@jtcustomknives]

I think you have you explanation wrong. I believe that one of the hairs is on the tuning fork and the other one is fixed which prevents the wheel from going backwards.

[@robertlancaster8190]

You’re right,also the index wheel has 300 teeth,so rotates at 72 rpm…

[@mreza84]

Yes, you are right.

[@mreza84]

@@robertlancaster819072 rpm, are you sure?!

[@cofflandrw]

Thank you so much for the excellent information. I recently inherited a lot of stock from my late uncle's watch shop. Just sorting through the detritus right now, but finding amazing gems. Your videos have prompted the desire to learn more, with the goal of reassembling and servicing these pieces of art. Thank you !

[@marcuslieberman3577]

I found a SpaceVeiw a couple years ago. Just beautiful. The gear with 360 teeth, is only 2mm wide! Love your videos. So interesting. 👍

[@bastadimasta]

Nice explanation. Bulova accutron reminds me the WW2 pistone engone fighter aircraft with with turbine air compressors.

[@jeffreydheere4737]

The Bulova Tuningfork movement is amazing.

[@BernardoSilva-ex9gc]

quartz with a mechanic balance hibrid

[@Kevins-Philippine-Retirement]

"The cockroach 🪳 of movements" 🤣🤣🤣

[@georgeenglezakis1070]

Hi there, My grandfather recently gave me his Bulova Accuquartz watch, I have managed to date the watch back to 1973. I have taken it to a specialist in South Africa and they have told me that I require a 2242 movement but have not been able to source a working movement. He managed to jump start the watch (by getting the second hand running again) but told me that once stops working, I will need to find the replacement movement due to the tuning forks. I would really appreciate getting my grandfathers watch running again as I look at it as an heirloom. Would you be able to assist me in this matter?

[@DigitalAndInnovation]

This trio of videos on quartz moment did exactly what you said it would and much more... I have been watching a ton of your content and have just felt it would be way to hard to get hands on with any sort of mechanical wound movement (like you showed in the first video)- but after seeing so much crosses over and these even can have rubys- I ordered a ETA quartz moment to start working with- you explain this stuff so well and make it very fun to 'watch'!

[@alaindrolet_atlt_2019]

Very interesting thank you Kalle !! That exactly what I says to people ! Don’t juste look the beauty of the pieces, a lot of time there a very cheap movement inside ! It’s the same thing like I decide to sale watches, so I will see a supplier and choose the case, the hands, a cheap movement and decide that my brand name is Al’s watches and sold it 150$ Euro !!!

[@EricBishard]

I didn't realize they had a 2020 Accutron, you can pick one up for $3500 base price or but vintage from $500 to $2000 depending on the condition

[@ferguscosgrave7510]

Do you repair turning forks watchs in your shop

[@davidf7883]

Greetings from Tennessee USA. I have an accutron from the 1970s. Are the batteries difficult to find today? Thanks for the great videos. I'd love to see more dial and case restorations.

[@walkerrevels9274]

387s is the battery for the 214

[@windward2818]

Plastics have progressed impressively for making structural machine components, sleeve bearings, gears, etc. but the very capable plastics (high strength, machinability, self lubricating) are not cheap (many are not moldable) and more expensing than free machining brass (Brass 36000) if the plastic is machined in the same way (CNC). So I would guess the plastic parts in the orange watch shown have such loose tolerances is because they are a low grade molded plastic part. The plastics will wear and are not necessarily good with cleaning solvents or high heat. Working in close tolerance metal machine design, like a watch, although there are many tight tolerance small mechanisms which are not watches, require a high quality control on the metal alloys used (some alloys are special for the customer directly from the mill (smelter) and then shaped at a mill, which could be in house) to ensure the exact metal properties needed (strength, fatigue, heat treat, finish, weight, machinability, surface treatments, etc.). So, in general, machine design using metals (Mechanical machine engineering) is not easy and never has been. There is so much that goes into making a part that can perform and meet the function and aesthetics of the design.

[@jtcustomknives]

I remember opening my old citizen eco drive and being shocked at the movement. Everything was plastic and not what I expected for a $500 watch.

[@davidmills1874]

How long does the battery last in one of those

[@ChronoglideWatchmaking]

Probably 6 to 8 months.

[@sidecarural]

This is an excellent video, like the others on your channel... I particularly appreciated the part dedicated to the Bulova Accutron, of which I am an amateur (I have a small collection of 5 pieces). The Accutron - as you have well explained - is a watch like no other, and it is incredible that it was conceived and created with the technology available around 60 years ago!!! Having said this, let me make a clarification. In the video, you say that the driving wheel is moved by two ratchets (not sure this is the right word in English…) , connected to the two branches of the tuning fork. This is not accurate. In fact, only one of the two ratchets is connected to a branch of the tuning fork (we will call this ratchet A). The other ratchet is fixed, and is integral with the watch case (we will call this ratchet B). Now, ratchet A pushes the wheel forward (clockwise) when it receives the vibration impulse from the branch of the tuning fork to which it is connected. When the vibration of the tuning fork begins to pull ratchet A back, ratchet B comes into play, preventing the wheel from following ratchet A and turn counterclockwise. The wheel is held still by ratchet B until ratchet A comes back into play and (moving forward again) engages with the next tooth on the wheel, and pushes it forward. From here, the game repeats: A pushes, B stops the wheel, then A pushes again, and so on. This all happens 360 times per second. Amazing, right?

[@nightoil6567]

"...the cockroach of all movements..." Your horrified expression is a sight to behold! I've been down the Breitling, Zenith, Rolex, IWC, Patek road. They're nice but... Patek ended up being very rude AND charging a small fortune for servicing. High end watches are like pets - expensive to buy AND own. I recently got a Citizen Eco-Drive BM7108-14E cockroach for £130 (UK). +1 sec every 7 weeks. (Likely just a production line fluke, I know.) A very usable cockroach. Here's a question. Citizen said in an email: "Pulling the crown out will stop the movement and allow for a full re-charge." Looking at the E111 movement technical guide, I don't see any functional connection between the circuit board and movement, other than the coil. "Stopping the movement" just seems to hack the fourth wheel. Presumably, the circuit board continues to pulse the coil, with the motor's rotation blocked. How would hacking the wheel train "allow for a full re-charge"? Any ideas? Your youtubes are unique, lively and very watchable!

[@christicks5843]

The tuning fork kind of works that way but kind of not, I actually did a video on it but another person recorded it in slow Mo so I'll use their video ( kzbin.info/www/bejne/eYG2aJSEeKaqd6M) but in this you can see one arm pushes the gear and 1 is a pawl. But otherwise that is an excellent example of a 214. That being said if you want an really in-depth look at the circuit and freq generation do have a look at my video!

[@Luiblonc]

Brilliantly said: The CockRoach of Movements!! So true!!

[@trimwus]

Accutron! Much more interesting!

[@roadgent7921]

You have to hand it to them, SeikoEpson and Miyota know their business. A hundred times more accurate than a Rolex, the size of a finger nail and one dollar each! BTW the amount of play in the pivots might be a reason why these are so effective - think AK47.

[@timelesstechwatches]

300 teeth, not 360. 218 has 320 teeth.

[@marcroche9324]

I thought this Vid would have been pulled by now. It is fraught with inaccuracies.

[@freakysteve140281]

Ok… now I’ve learned electric watches are a thing