The new ZF sec @6 7750 (now tested on timegrapher)

[GenTLe 1,509]

So after kennycoder posted this thread here: http://www.rwg.bz/bo...howtopic=113529

I thought that one problem has been solved: now we know that the SWF Portuguese v5 have the new sec @6 7750 with good jeweled transfer gears.

But another problem arise: HOW to know if the others are using the same one?

 

So I wrote @Torobravo (thanks to him!!!) asking about this, and he told me that ZF is using a new one too...

Starting (apparently) from this one: http://www.toro888.c...product_id=1851 and probably this too: http://www.toro888.c...product_id=1904

 

Here the pictures. Let's check it together:

 

For comparison this is the old crappy one (tasken from JSJ thread http://www.rwg.bz/bo...showtopic=69834 ):

 

And this the SWF one from kennycoder thread:

[GenTLe 1,509]

1st thing I notice is that both the ZF and the SWF take the movement of the sec @6 from a gear on the left:

 

While the old crappy takes the movement from the top right:

 

Also they both (ZF and SWF) have the central part of the sec @6 pinion gear which looks made in 2 different metals (brass in the middle and some sort of steel in the outer part), while the old crappy has a full brass one.

 

This thing looks promising. JSJ, kennycoder,you that have put your hands in them, do you nothing something else?

[UmpaHimself 222]

Nice fact finding. Thanks for the info!

[JohnPilot 1]

Interesting, thx for posting.

[dfq23 131]

Just ordered a 3878 so this gives me slightly more confidence!

[ShovelnTC 31]

I really hope that this may be a solid option as there are so many watches that I just won't order as they only come with the 7750 option or have faux seconds at 6 and I just don't like anything non-funtional on my watches.

[Martijn0007 3]

Great post!

[Stuvetjee 17]

Would it be? Could it be? Will it be? Finally a more reliable timebomb? :o

[GenTLe 1,509]

Just ordered a 3878 so this gives me slightly more confidence!

Waiting it on m2m with greed!

[jimbo206hol 32]

Anyone know if these movements are able to be purchased sans watch? Be nice to replace the movement in my otherwise very nice RG Portuguese! (stops every few minutes currently...)

[Cdevil 0]

GET THAT ON A TONA NOW!!!!!! Or is that the "new and improved" 29j?

[Left Coast Guy 24]

This has to be among the more exciting rep advances in the last couple of years. Appreciate the background work Gentle

[Ephry73 5]

Bump for great news!!!!

[Ishmael 92]

GET THAT ON A TONA NOW!!!!!! Or is that the "new and improved" 29j?

Yep - won't touch the modern Daytonas with a 10 foot pole. Would love to see this setup in the new Baselworld Daytonas.

[montblancrep 0]

this doesn't quite confirm the question?

 

Do new zf 3714 come with the extra 3 jewels or not? Will they be more reliable?

Edited April 28, 2016 by montblancrep

[Mr_B 2,401]

Great info, thanks for posting!

[GenTLe 1,509]

this doesn't quite confirm the question?

 

Do new zf 3714 come with the extra 3 jewels or not? Will they be more reliable?

Yes. Anyway for the classic Portuguese chrono SWF is better than ZF.

[Plikk 23]

Thanks for sharing!

[redditgw 0]

Thanks for posting this! Great info and hopefully this solves the second issue at the 6 position.

Edited May 24, 2016 by redditgw

[BCFIT 0]

Great write up! Thank you!

So this is the proposed new movement in the Basel Daytonas?

[GenTLe 1,509]

Great write up! Thank you!

So this is the proposed new movement in the Basel Daytonas?

No

[JSJ 0]

GenTLe sorry I missed this thread earlier.

 

I now have a 3714 and a 3878, both with secs@6 which don't stutter at all. These must have the new movement. Both came from M2M.

 

I'll investigate a bit more and if there is any new info I'll post.

[GenTLe 1,509]

That would be great

[northantsrich 1]

Good post.

 

 

Sent from my iPhone using Tapatalk

[GenTLe 1,509]

Ok so, a friend of mine wanted to get one of these new ceramic IWC Miramar chrono sec@6, so I ordered it (the KW/V6F version) for him and today I had some time to give it a look, regulate it and check on the timegrapher its status.

 

First, how it looks:

 

 

It was quite clean, and the only part that I didn't like was the fine regulator of the balance that was quite useless: working on the fine lever it was lifting the regulation arm, instead of make it to rotate:

 

Apart from this it seems more than fine.

 

At testing stage I can say that... Well, I'm impressed: after like 10/15 full rotation of the crown to wind it, I have put it on the timegrapher and it was like 0.8ms out of beat synch and running +20s/d fast, but still it was showing an amazing stable line and and amplitude >300°

After a bit of regulation, this is the result (and 10 secs before the shot it was at 330° amplitude). And the best part is that it's even stable in all the position, with just like +2s/d as max positional error... Really impressed this time.

 

TO add: the movement was well fixed in the case with the common screws and tabs, no risk to have them floating around.