StormTooper4 Posted September 6, 2010 Report Share Posted September 6, 2010 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 Quote Link to comment Share on other sites More sharing options...
sander Posted September 6, 2010 Report Share Posted September 6, 2010 No man, the crown for the 6497 can not be used for a 7750. It's totally different. Quote Link to comment Share on other sites More sharing options...
StormTooper4 Posted September 6, 2010 Author Report Share Posted September 6, 2010 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. Quote Link to comment Share on other sites More sharing options...
FxrAndy Posted September 6, 2010 Report Share Posted September 6, 2010 Offshore should be able to get you 7750 stems Quote Link to comment Share on other sites More sharing options...
offshore Posted September 6, 2010 Report Share Posted September 6, 2010 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. Quote Link to comment Share on other sites More sharing options...
z3k0 Posted September 6, 2010 Report Share Posted September 6, 2010 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 Quote Link to comment Share on other sites More sharing options...
rolli Posted September 6, 2010 Report Share Posted September 6, 2010 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 Quote Link to comment Share on other sites More sharing options...
StormTooper4 Posted September 6, 2010 Author Report Share Posted September 6, 2010 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. Quote Link to comment Share on other sites More sharing options...
rolli Posted September 6, 2010 Report Share Posted September 6, 2010 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 Quote Link to comment Share on other sites More sharing options...
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