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User guide to the A7750 movement.

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claffeeba

Is there a fix when you don't adhere to the guidelines? I have a PAM rep from Andrew and the crystal exploded and at some point in the repair period at my local mall jeweler, the 7750 got messed up and the chrono does not work. Thoughts?

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JSJ

 

 

Is there a fix when you don't adhere to the guidelines? I have a PAM rep from Andrew and the crystal exploded and at some point in the repair period at my local mall jeweler, the 7750 got messed up and the chrono does not work. Thoughts?

 

My thoughts? This is your first post. We are a helpful bunch but diving straight in with a customer service question like this can give you a bumpy ride. That's RWG for you.

 

Your watch, we need some more details. You might receive more help if you start a new thread with a couple of pictures and maybe an introduction.

 

Tell us what doesn't work exactly. I assume it worked before it went in. Why did the crystal explode? Did it not work immediately you had it back? Did you tell the repairer? What did he/she say?

 

I'm still thinking.

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GenTLe

Is there a fix when you don't adhere to the guidelines? I have a PAM rep from Andrew and the crystal exploded and at some point in the repair period at my local mall jeweler, the 7750 got messed up and the chrono does not work. Thoughts?

 

No crystal and fucked-up 7750? "Mall" Jeweler?

Throw it away...

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ptw1953

So, does this movement have any positives.....apart from the price?

 

 

what do you think?

 

Is that a trick question?

 

 

 

 

 

 

Let me ask a question. Why are there so many arrogant, unhelpful tossers into fake watches?

d

oh, it is almost pre-requisite my man...as you have seen from their earlier posts. Don't upset them though, or they will pressure the Mods to ban you. You are not one of them, remember...

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GenTLe

So, does this movement have any positives.....apart from the price?

 

 

what do you think?

 

Is that a trick question?

 

 

 

 

 

 

Let me ask a question. Why are there so many arrogant, unhelpful tossers into fake watches?

d

oh, it is almost pre-requisite my man...as you have seen from their earlier posts. Don't upset them though, or they will pressure the Mods to ban you. You are not one of them, remember...

So you are practically saying that the mods are a bunch of ball-less that just follow the "pressure of bad mass"?

 

MRW-watching-people-fail-jimmy-fallon-eating-popcorn.gif

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BenjaminButton

So, does this movement have any positives.....apart from the price?

 

 

what do you think?

 

Is that a trick question?

 

 

 

 

 

 

Let me ask a question. Why are there so many arrogant, unhelpful tossers into fake watches?

d

oh, it is almost pre-requisite my man...as you have seen from their earlier posts. Don't upset them though, or they will pressure the Mods to ban you. You are not one of them, remember...

So you are practically saying that the mods are a bunch of ball-less that just follow the "pressure of bad mass"?

 

MRW-watching-people-fail-jimmy-fallon-eating-popcorn.gif

 

This naughty little man is on a mission Mr G.

I think he may not be quite the newbie he seems - as he appears to be carrying quite a big chip on his shoulders!

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GenTLe

So, does this movement have any positives.....apart from the price?

 

 

what do you think?

 

Is that a trick question?

 

 

 

 

 

 

Let me ask a question. Why are there so many arrogant, unhelpful tossers into fake watches?

d

oh, it is almost pre-requisite my man...as you have seen from their earlier posts. Don't upset them though, or they will pressure the Mods to ban you. You are not one of them, remember...

So you are practically saying that the mods are a bunch of ball-less that just follow the "pressure of bad mass"?

 

MRW-watching-people-fail-jimmy-fallon-eating-popcorn.gif

 

This naughty little man is on a mission Mr G.

I think he may not be quite the newbie he seems - as he appears to be carrying quite a big chip on his shoulders!

It seems so. But with these starts he'll not last a lot. ;)

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ptw1953

So, does this movement have any positives.....apart from the price?

 

 

what do you think?

 

Is that a trick question?

 

 

 

 

 

 

Let me ask a question. Why are there so many arrogant, unhelpful tossers into fake watches?

d

oh, it is almost pre-requisite my man...as you have seen from their earlier posts. Don't upset them though, or they will pressure the Mods to ban you. You are not one of them, remember...

So you are practically saying that the mods are a bunch of ball-less that just follow the "pressure of bad mass"?

 

MRW-watching-people-fail-jimmy-fallon-eating-popcorn.gif

 

This naughty little man is on a mission Mr G.

I think he may not be quite the newbie he seems - as he appears to be carrying quite a big chip on his shoulders!

It seems so. But with these starts he'll not last a lot. ;)

Says who exactly? Are you insinuating that YOU are the big chief around here? YOU make all the mods decisions? kma...

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GenTLe

So, does this movement have any positives.....apart from the price?

 

 

what do you think?

 

Is that a trick question?

 

 

 

 

 

 

Let me ask a question. Why are there so many arrogant, unhelpful tossers into fake watches?

d

oh, it is almost pre-requisite my man...as you have seen from their earlier posts. Don't upset them though, or they will pressure the Mods to ban you. You are not one of them, remember...

So you are practically saying that the mods are a bunch of ball-less that just follow the "pressure of bad mass"?

 

MRW-watching-people-fail-jimmy-fallon-eating-popcorn.gif

 

This naughty little man is on a mission Mr G.

I think he may not be quite the newbie he seems - as he appears to be carrying quite a big chip on his shoulders!

It seems so. But with these starts he'll not last a lot. ;)

Says who exactly? Are you insinuating that YOU are the big chief around here? YOU make all the mods decisions? kma...

No. But I am around from enough time to guess their possible reactions :D

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JSJ

 

 

So, does this movement have any positives.....apart from the price?

 

 

what do you think?

 

Is that a trick question?

 

 

 

 

 

 

Let me ask a question. Why are there so many arrogant, unhelpful tossers into fake watches?

d

oh, it is almost pre-requisite my man...as you have seen from their earlier posts. Don't upset them though, or they will pressure the Mods to ban you. You are not one of them, remember...

So you are practically saying that the mods are a bunch of ball-less that just follow the "pressure of bad mass"?

 

MRW-watching-people-fail-jimmy-fallon-eating-popcorn.gif

 

This naughty little man is on a mission Mr G.

I think he may not be quite the newbie he seems - as he appears to be carrying quite a big chip on his shoulders!

It seems so. But with these starts he'll not last a lot. ;)

Says who exactly? Are you insinuating that YOU are the big chief around here? YOU make all the mods decisions? kma...

No. But I am around from enough time to guess their possible reactions :D

 

Interesting that a noob would resurrect a three-year-old post to make a point about established members being arrogant.

 

What is that strange smell?

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Mr Stubbs

So, does this movement have any positives.....apart from the price?

 

 

what do you think?

 

Is that a trick question?

 

 

 

 

 

 

Let me ask a question. Why are there so many arrogant, unhelpful tossers into fake watches?

d

oh, it is almost pre-requisite my man...as you have seen from their earlier posts. Don't upset them though, or they will pressure the Mods to ban you. You are not one of them, remember...

So you are practically saying that the mods are a bunch of ball-less that just follow the "pressure of bad mass"?

 

MRW-watching-people-fail-jimmy-fallon-eating-popcorn.gif

 

This naughty little man is on a mission Mr G.

I think he may not be quite the newbie he seems - as he appears to be carrying quite a big chip on his shoulders!

It seems so. But with these starts he'll not last a lot. ;)

Says who exactly? Are you insinuating that YOU are the big chief around here? YOU make all the mods decisions? kma...

No. But I am around from enough time to guess their possible reactions :D

 

Interesting that a noob would resurrect a three-year-old post to make a point about established members being arrogant.

 

What is that strange smell?

What ever it is, be very very quiet... :banhamster:

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Monkey_Business

Got my A7750 yesterday. Did not wind it very much, and it stopped after two hours. Tried re-wonding it alot, tapping it on the back, the side etc.

 

Just when I was about to call it dead, i tapped it on the top of the case, and the thing came back to life. What can cause such behaviour?

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Monkey_Business

Seconds@12 if relevant

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Lolo1972sg
Seconds@12 if relevant

A lot of possible issues. Whatever it is, looks like you need to service it.

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johnjameson

Hi, I bought a rep daytona from trusty running a 7750 movement, the problem I have is when I use the chrono and then reset the hands the minutes subdial doesn't reset properly, it returns to a 6 o clock position instead of a 12, does anyone know where i can go to get this fixed?

 

I live in Long island close to NYC

Edited by johnjameson

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10:10 Watch Repair

Got my A7750 yesterday. Did not wind it very much, and it stopped after two hours. Tried re-wonding it alot, tapping it on the back, the side etc.

 

Just when I was about to call it dead, i tapped it on the top of the case, and the thing came back to life. What can cause such behaviour?

 

Loose screw has worked it's way free. VERY common on the A7750

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benhipps

The 7750 is probably the most-discussed movement on the rep boards. Partly because of the notorious issues with the secs@6 movements, but also because it has built a reputation for being less reliable than other movements. The reliability issue is, however, largely based on early samples of the low-beat version - the movement currently being fitted to replica watches is quite a bit more reliable than has been the case in the past - although problems can still occur.

 

Note that the standard configuration for the A7750 is with the seconds subdial@9. Many reps have modifications to move this to 6, 12 or 3. In all instances the extra gearing required to do this adds extra drag to the movement and impacts reliability, but the secs@6 modification is the most notorious as it's not well executed (no extra jewels have been added) and the failure rate is significantly higher than other variants.

 

Here are a few basic guidelines - culled from posts by Ziggy and various other folks who know a damn sight more about this movement than I do wink.png .

 

1. If you have to hand-wind the movement, do so gently and try not to do it too often. The hand wind mechanism is quite high-geared and there is a danger that you can strip the gears if you're too rough with it. Best advice is to start the watch with a quick 'swirl' then just strap it on and wear it. Normal use should keep it wound (I can vouch for this as it's what I do.).

 

2. Yes, the 7750 rotor is usually that noisy wink.png

The 7750 rotor only winds in one direction. The winding direction has resistance since the rotor is trying to wind the mainspring. In the other direction there is no resistance at all, and the rotor is free to spin. If the rotor bearings are dry, there is nothing preventing the rotor from spinning like crazy. Lubricating the bearings helps to quieten the rotor a bit and prevent such a free spin in the non-winding direction.

 

3. Don’t set the date between 7 pm and 2 am

This is true for all 7750’s, Asian or gen Valjoux. Note that this is also good practice when setting the date on other movements. The date gear starts to engage with the date wheel around 7pm and disengages totally by 2 am, if you attempt to do a quick date change during the engagement, you may damage the watch. Best advice - with any watch, whatever the movement - is to wind the hands forward past midnight until the date changes, then with the hands set to around 6am, use the quick set function to change the date as needed.

 

4. Don’t re-set the chrono with the seconds hand anywhere but between 10 and 2 on the dial.

The reset hammer can slam down very hard onto the heart cams for the seconds and minute counters. This force can cause the seconds hand to slip if the hand is sitting anywhere but between 10 and 2. Even genuine watches can suffer from this problem. A slipping center seconds hand is totally preventable by the owner, all you have to do is make sure you never reset your chrono between anything but 10-2. In addition, DO NOT push the chrono reset pusher (@ 4) while the chrono hand is running. It is also recommended that you resist the temptation to 'play' with the chronos too often - especially on an unserviced movement - as this can increase the chances of problems.

 

As I said - this post has been collected from comments by various experts on the boards. If more knowledgeable folks than myself have any corrections or observations, do please feel free to comment and I'll correct this post if appropriate. Thanks.

 

 

Man, you guys cover everything. Thanks again.

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David(bcn)

Thanks. Despite are replicas, I do not want to break them in few week.... I expect them to last for several years ;)

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Boris968

Makes me nervous reading all the 7750 don'ts. I feel like I should print it out and refer to it any time I wear my watch.

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JSJ

Makes me nervous reading all the 7750 don'ts. I feel like I should print it out and refer to it any time I wear my watch.

 

It's fairly simple. Don't use the chonograph and don't quickchange the date between 10 and 2 o'clock.

 

I wear mine a lot and they are no more trouble than other reps.

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BFGino

I dream about Seagull building an A7750 version, with all of its undervariants. (-51,-53, etc.)

The ST19 (based on the Venus 175) is such a great movement.

 

If the Chinese would apply stringent QC, they would become very competitive as ETA is out of the "game" now.

 

I wonder if the new 29j variant has improved the 7750...

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mrf1992

Where can I pick one up ?

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splke

Where can I pick one up ?

TWAT

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greg_r

Where can I pick one up ?

TWAT

 

Indeed - a further -25 posts for that...

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Herc Pilot

Glad to have found this article, I just ordered a Steelfish with the A7750. May have just save me $300. Thanks

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