A7750 Stems

[StormTooper4]

A mate of mine has bust his PAM 188 Crown and stem, have yet to see it so it might not be . Now I know that the unitas 6497 stem is the same width as the stems in a eta 7753 but I have a bad feeling that they are totally different in the Asian 7750's

I have a few unitas stems but was wondering if these would work or where could i get some A7750 stems from? Thanks in advance for any advice

ST4

[sander]

No man, the crown for the 6497 can not be used for a 7750. It's totally different.

[StormTooper4]

Bugger, I guess I will have to give 't' a nod and see if he has any of his old ones left an appropriate stem. As I have a feeling my mate may have snap his off.

Thanks for the response Sander I appreciate the confirmation.

[FxrAndy]

Offshore should be able to get you 7750 stems

[offshore]

We have some in transit now...about 7 days away.

Offshore

Edit, Per the post below, the ones we will get are 0.9 diam.

[z3k0]

A mate of mine has bust his PAM 188 Crown and stem, have yet to see it so it might not be . Now I know that the unitas 6497 stem is the same width as the stems in a eta 7753 but I have a bad feeling that they are totally different in the Asian 7750's

I have a few unitas stems but was wondering if these would work or where could i get some A7750 stems from? Thanks in advance for any advice

ST4

You are mixing up lot of thing here - first, you can't use Unitas/Asian 6497/8 stems in any other movement, because part of the stem that goes into movement is completely different. Usually different movement "families" have different stems - e.g. 775x movements have one kind of stem, 289x movements other etc. Other thing about stems is thread size (or diameter of threaded part). For 775x movements (Swiss AND Asian - there is no difference) two different sizes are produced - 0,9 and 1,2. What size you need depends ONLY on crown you have/want to use. So, if your crown has 1,2 sized "hole" for stem, you need 1,2 sized stem - if your crown have 0,9 sized "hole", you need 0,9 stem

Just as suggestion - maybe it would be good idea to assemble one sticky post about stems and crowns, there seems to be lot of confusion about that, especially in Panerai section.

regards

[rolli]

1.) crown with 1,2mm thread usable for a pam with 7750 movement = yes

2.) for the pam with 7750 movement = you need a 7750 stem with 1,2mm thread,

rolli

[StormTooper4]

Wealth knowledge gratefully appreciated. So that's great as I have some spare 1.2 crowns I will hopefully just need the correct 7750 stem.

I need to check the watch out first its may well have just come undone.

Thanks guys top work as always.

[rolli]

last week i orderd valjoux 7750 stems with 0,9mm thread by a local distributor for my springloaded T_crowns .

that means, also the 0,9mm are still available.

rolli