Guide To 7750 Hand Sizes, Asian, Swiss, New, Old, Hand size

[takashi]

Taken from the RWG2, Posted By Ziggyzumba. Taken with permission and big thanks to Ziggy to allow me to repost his post over here at the Dark Side.

Genuine ETA 7750 all variants (all)

Hour 2.00mm
Minute 1.20mm
Center Seconds 0.25mm
Subdials 0.17mm

Old Asian 7750 version all variants(21,600 BPH)

Hour 2.00mm
Minute 1.20mm
Center Seconds 0.25mm
Subdials 0.17mm

New Asian 7750 (28,800 BPH) Normal ones - NOT the Daytona model (don't have one to measure)

Hour 2.00mm
Minute 1.20mm
Center Seconds 0.20mm
Subdial 0.20mm

Also note on the New 7750, the center seconds post, is below the top of the minute hand tube. On all other versions of the 7750, the center seconds post is about 1mm above the minute hand tube, not below it. Therefore the center seconds hand on the new 7750's, has an extra long tube on it, to make up this height difference. So not only is the hand smaller in diameter, it's longer as well...

RG

 

[LegendofSpeed]

thanks for posting this... i have been thinking about putting a swiss 7750 in my new Navi... looks like I am going to have to find an older one and get a newer dial...

would it be possible for this to get a sticky?

thanks!

 

[takashi]

It is been stickied. My intention is to let fellow Dark Siders who intend to upgrade to the real ETA7750 know before they spend their $$ on the movement. Thanks that Ziggy posted this just recently.

EDIT: Dial wise: most likely it will fit. I have done transplant of genuine dial on IWCs and Breits with rep Asian 7750. They fit the 7750 rep and gen perfectly. The known list:
IWC GST Chrono Ti
IWC Portuguese Chrono
IWC Spitfire Chrono (1 gen dial coming, waiting to get the watch).
Breitling Avenger Chrono Ti.

 

[andreww]

It would be great if Ziggy could list the hand sizes of all movements.

 

[takashi]

That you have to ask him. Here's one tip from my experience:

ETA 2824-2, 2892-A2, Coaxial Calibre 2500 Omega, 2836-2 has the same hand size.

ETA 6497-2, 6497-1, CN 6497 has the same hand size

Rolex rep Moljina movement does not have the same hand size as ETA6497.

 

[andreww]

ANy idea on the Seagull movement?

 

[takashi]

I am sorry Andrew, I can't confirm that. Perhaps you can ask directly Ziggyzumba. I am sure he will give you pretty good answer. Please post here if you have already found out. Thanks.

 

[supermanx]

Proud to say ziggy used my daytona for this measurment...

New Asian 7750 Daytona model (28,800 BPH)

Hour 2.00mm
Minute 1.20mm
Center Seconds 0.20mm
Subdial 0.17mm

NOTE that on the new Daytona model, the 9 and 3 subdials are above the center line of the movement, whereas the other 7750's are all in line with the center post. In other words, a Daytona has the subdial hands slightly higher than the 3 and 9 markers, but a 7750 has the subdial hands at 3 and 9 lined up with the markers.

Also note that the center seconds hand post is ABOVE the minute hand tube.


Hope this helps those that were wondering about this.

 

[andreww]

I am sorry Andrew, I can't confirm that. Perhaps you can ask directly Ziggyzumba. I am sure he will give you pretty good answer. Please post here if you have already found out. Thanks.

Seagull hand sizes are:

Hour hand - 1.40mm

Minute hand - .94mm

Centre Second - .26mm

Sub dials - .26mm

 

[takashi]

---UPDATE---
This may not apply to all Asian 7750 hi beat rate config... My latest finding from Asian 7750 hi beat to ETA 7750 in Omega SMP Chrono replica:

Hour and minute hands: FIT LIKE CHARM
Subdial Hands: FIT LIKE CHARM
Second Chrono Counter: DOES NOT FIT EVEN WHEN FORCED. Get a genuine dude!

 

[Deuce]

I am sorry Andrew, I can't confirm that. Perhaps you can ask directly Ziggyzumba. I am sure he will give you pretty good answer. Please post here if you have already found out. Thanks.

Seagull hand sizes are:

Hour hand - 1.40mm

Minute hand - .94mm

Centre Second - .26mm

Sub dials - .26mm

Anyone know where to get the segull Daytona movement? It has running sec at six but day/date as chrono.

 

[E J]

Hey great post!!! Thanks


is the Asian "ETA" the same hand size as 2824 & 2836 ETAS?

Thanks again

 

[takashi]

@EJ: The one with Asian ETA copy like in River's Sub will fit genuine ETA. I am not too sure with DG2183 but usually hands for Asian 21j version can't be fitted to ETA version without any modification.

 

[beano2004]

How about the 2893-2 hand sizes different that the 2836-2?

 

[takashi]

Hands will fit but the GMT may not.

 

[beano2004]

another question based on that. can you tell me if the 2893-2 movement will fit in the same pam65 case that housed the 2836-2?

 

[tenshin2002]

Hand sizes in the sticky are wrong

Hi
I was thinking of swapping an A7750 with a gen 7750. So I read this thread and found that the hand sizes dont match with the specification of OFrei.
See this link: http://www.ofrei.com/page240.html

Can anybody confirm.

 

[Kal Vilmer]

Great info, thanks for the upload!

 

[guarnerius]

great info! thx!

 

[ffantini]

Interesting post, thanks for sharing!