Valjoux 7750 Explained 

ETA has some of the most sophisticated mechanisms for autowinding. In one particular ladies' automatic movement (I forget which calibre) I found a planetary system with a multitude of gears which perform reduction for winding the mainspring barrel, and even a system for decoupling the rotor when the watch is fully wound- I believe there were ten gears alone in the selfwinding mechanism of this movement.

Great video, so nice to see someone explaining things in a clear and easy manner.

Man I walked past your store a bunch of times while I was visiting Auckland and now I'm annoyed I didn't come in. Cool video

In my old 1991 Breitling Windrider Chronomat B13047 runs the same Valjoux 7750 movement. It´s a very good movement and you will find spare parts for it even in a hundret years.

Thanks a lot man. This movement has been a thing of fear tome until I watched this video; I can't thank you enough for sharing your knowledge.

Excellent explanation dear mate. Great video.

This is my favorite chronograph movement. I had a cheap chinese version of it once and that watch broke rather quickly. I had disassembled it and reassembled it a couple times to figure out how everything works and I cannot get enough of this movement. I hope to own a Tag Heuer Carrera chronograph that has this movement in it one day. Thank you for this video.

I did not know that the automatic winder only winds up in one direction. That explains why the winder of my 7750 watch sometimes gets flung around by arm movements rapidly.

Never heard it explained so well. Thanks!

Loved that thank you. I had no idea that resetting the stop watch over shot the 12 o clock position.

New 7750 Victorinox for $359US including delivery. Had been avoiding it for the high repair cost, but at this price it could be disposable. Will see how long it lasts.

very concisely explained - thanks for sharing.

I've got a Bridgeport in SS, black dial and on a strap. To be honest i couldn't be happier with it and i highly recommend it.

Hi, great presentation of the movement. Could you help to understand why the barrel with the main spring shall be replaced, what might be the reason to do so? My watch with the 7750 movement remained untouched, placed in a watch mover, and I have noticed that after two years the watch does not work. And the authorised service wants to charge me for the barrel with the mainspring replacement.

Awesome! Just serviceing my Super Avenger and it serms to have the 7750 as base.

Very useful video, I have a question I'm looking forward to modified my Hamilton Jazzmaster hands, so are the Hamilton calibre H-21 movement have the same hands hole's size as the ETA valjoux 7750 ?

Excellent,wish you showed calendar and day wheel assembly.The Hamilton has one Noisey Rotar,why?Who knows,moves too freely,Ive repaired many only to be told I broke the Rotor,no,its a noisy spins too freely rotor.Thanks for your info.

hello, how can i telll this watch bulova 64c104 chrono carries val 7750 since i dont see val 7750 engaved inside.inside. please, thanks for.help

You should make more of these videos. They are very interesting.

Thank you. MORE PLEASE clear video close ups and easy to understand. T)

Thank you so much for this video. It helped me fix the chronograph of my Omega Speedmaster triple date by comparing it with the functioning of your watch. One of the little hammers was jammed outside its housing. Cheers!

well done,but what do you think of the movement.???

Blair excellent demonstration of the 70750 and good to see a kiwi at it, I've been interested in building my own watch for a while with this movement and this can only help, I just may need your expertise to help along the way, Steve from Waikato

So I watched the first time and thought, no the reset of the chrono spun clockwise. So I watched in 0.25X playback speed and sure enough, i was right. The chrono test spins the hand clockwise and stops almost dead on 12, possibly over shooting to 12.30 on the hour position. I mean unless the shutter speed of the camera is just that bad that I can actually see the hand passing past the 6,7,8,9 etc then pretty sure your wrong on that particular bit of info. That being said, great video, very nice showcase of the sweeping hands and a nice clear look at the movement in the nude! Probably saved alot of people the trouble of taking theirs apart to be curious.

Any tips on how to care for a watch that has this movement? 1. do people normally have the main (big) seconds hand going even though theres a small second subdial? 2 is it best practice to stop the chrono (seconds hand) first before resetting it with the bottom right button?

Hi valjoux I hv Oris Carlos Coste limited edition my watch inner hour sub dial not working properly if push timer button hour sub dial stop at 3 don't go forward plz tell me

Hola: Superlative video!!! I have read in many forums that Valjoux 7750 (I know them quiet well) are really great but very hard and expensive to service because to building avoid costs Valjoux seemed to forget the watchmaker. I am thinking to buy a Hamilton but I am not sure... I have Seikos 6138 and Citizen chronos that are still running...thank you!!!

Absolutely lovely video! Thank you! It is great to to see this movement exposed.

Only negative of this movement is the thickness. I've been looking at the Archimede Pilot Chrono and it's a beautiful watch but it seems so thick. Without having an authorized dealer where I could check it out in person, I'm finding it hard to drop $1.200 on one.

I have this movement in a Oris Big Crown Crono. The watch rattles when lightly shaken up and down ,is this normal? Or has something come loose .

Is it a durable movement? I’ve read that their column wheel is their weak point.

Thank you Blair (or watchesonbroadway)! I will most certainly give this a try. I would like to buy a new sapphire crystal from you if I could; I am not sure of the thickness, but I know it is 30mm in diameter. The back crystal is not sapphire (scratched) and is smaller, maybe 25mm, but it would be nice to have a sapphire there. Both are pretty thin. Watch is Tissot v560 Bridgeport chronograph. I would also buy a band & oils from you. I am in the USA. Please let me know. Thanks again.

Thanks. But what about this winding rotor? Was something wrong with this movement?

Looks like a 2010 Khaki Field Chrono. I have the 2003 model, best daily use watch I had so far.

This was a great video! Do you know what IWC does to modify this movement in their pilot chrono? Can’t find anything with a definitive answer!

Hi valjoux plz tell me all functions about oris (Carlos Coste free diving world championship model no oris 31 30 40 EB) plz tell me all instructions about it my oris and how much it's cost in usd

You are from Auckland new market? That brick red beautiful building?

Thanks for the vid, workhorse movement for sure.

Is it possible for you to make a video on fixing chronograph central seconds hand stuttering?

great video man!!! Learned a lot, I have a Hamilton with the same movement!!!

Thank you for sharing your knowledge!

My Oris chronograph from 2003 have that movement very ocurrate

What about the plastic parts on escapments in c1 211 movement?

Excellent explanation!

what should be the most common problem if it doesn't work at all?

That is from early 2000 Hamilton Chronograph 3824 - High End day&date 42mm model from 38 series. The watch retail was around $2,000. I have exact same model. there is nice review in French for 3828 date only model - "google Hamilton 3828"

thank you mate!

Nice video.. i have a tissot t-race from 2009 limited edition with this valjoux movement.. really precise.. love it..

Please tell us, how much does this movement cost.

Great video. Question I have a automatic that all of a sudded doesnt wind. When I go to wind it with the stem, the stem spins back. Do you know what causes this? Thanks

Same movement is on a Hublot, but why the great price difference?

It’s in the breitling super avenger 2 I believe

Hello! Have been considering repairing my own tissot with this movement (how hard can it be?!). The issue is that the minute counter (top dial when looking at the watch) started missing minutes from time to time (second hand would pass by and it wouldn't tick off a minute) but now misses all the time. Any idea what could be causing that? Thanks so much. Jason in USA

Is it a good movement? I'm thinking about getting a Tissot T-Gold Bridgeport with the Valjoux 7750, but I'm not sure. What do you think?

Why do you have the dial on, while working on the movement ?

Thank you I've been watching this video about 50 times hahajahaha its just very informative and my IWC has it. Tested movement a really good movement indeed.

las bases estan bonitas

Very nice vid. thank you.

Perfect 👌👌

Thanks for the video my friend. Question for you, what is that Horotec tool you used to push the chronograph pushers?

Ok, thank you very much!

The date on my Oris 7750, changes when the time gets to 7:00pm

Is it a mouvement expensive to service? Regards

Very informative, Thanks.

عندي اميغا واتش واوميغا جينفا 1920 للبيع

Nicely done. "Tour de 7750."

Nice video!

Thanks!

What is the accuracy?

Hey, that's the movement in my Breitling Super Avenger! Great video and thanks for sharing. Sub and Like added!

hello, take out 12 hour hand, reset chrono with pushers, and finally put in the hour and at cero position, thats all.

interesting

when ETA competes at a reasonable price, (I mean it's cam operated) I'll consider, until then my $200 Shanghai is winning the race!

Those nails :o

@5:06...um no...🤔🥴🤨👎

That looks like a fake to me too rough