thealphabeta Posted March 14, 2011 Report Share Posted March 14, 2011 Hi Guys I've got an old poljot with 7734 movement in it, still runs fine. Can I use this as a donor for my 7032 case? I have to be honest and say I don't really understand the whole 30/45 minute recorder conversation... Any help would be appreciated. Thanks Quote Link to comment Share on other sites More sharing options...
Guest Sql_pl Posted March 14, 2011 Report Share Posted March 14, 2011 Poljot movement is similar to 7734 but at the same time very different! It will not fit cases made for 7734 like ones from DW. As for 30/45 counter, 7734 movements were available with 30 minute chrono subdials and 45 minute subdials. Gen tudor 7031/7032 had 45 minute chrono so it is best to find a 7734 with 45 minute chrono or convert a 30 minute one to work with 45 minute scale. Quote Link to comment Share on other sites More sharing options...
thealphabeta Posted March 14, 2011 Author Report Share Posted March 14, 2011 Damn it. So need to look for a valjoux 7734 donor specifically. Thanks for your response SQL Quote Link to comment Share on other sites More sharing options...
Guest Sql_pl Posted March 14, 2011 Report Share Posted March 14, 2011 Well some people posted pics of Monte Carlos with thicker cases to accomodate Poljot movements, if you don't care about details like case thickness you can look those threads up! Quote Link to comment Share on other sites More sharing options...
modelizer Posted March 14, 2011 Report Share Posted March 14, 2011 (edited) I have to be honest and say I don't really understand the whole 30/45 minute recorder conversation... If you want the chrono minute register function to be accurate, you will need a 7734 movement with 45 min register function or source the proper gears and convert your 30 min one.. Edit: Sql_pl beat me to it! Edited March 14, 2011 by modelizer Quote Link to comment Share on other sites More sharing options...
lhooq Posted March 15, 2011 Report Share Posted March 15, 2011 I hate to be the one to say it, but if you find a 30-minute 7734 movement and don't plan on using the chronograph too often... don't bother converting it! You will add a lot of cost and complication to what can already be a challenging build. As for similarities between the Poljot 3133 and the Valjoux 7734, please see this classic post. But as Sql points out, there have been Poljot/Tudors in the past (check Ray T's pieces), as well as Poljot/Daytonas. Quote Link to comment Share on other sites More sharing options...
thealphabeta Posted March 15, 2011 Author Report Share Posted March 15, 2011 Thanks guys. If I'm honest the chrono isn't a major concern but would be a nice to have. What should I look for when sourcing a valjoux 7734 to know it'll fit/work in the build? Can my stupid untrained eyes spot the 45 min recorder? Quote Link to comment Share on other sites More sharing options...
thealphabeta Posted March 15, 2011 Author Report Share Posted March 15, 2011 Also will the chrono function work at all if it's a 30 min? Quote Link to comment Share on other sites More sharing options...
thealphabeta Posted March 15, 2011 Author Report Share Posted March 15, 2011 Also will the chrono function work at all if it's a 30 min? Quote Link to comment Share on other sites More sharing options...
modelizer Posted March 15, 2011 Report Share Posted March 15, 2011 Both versions of the 7734 should fit and work in the DW build as is. So the only thing to keep an eye out for is the 45 min register subdial (if a donor watch) - or the amount of teeth on the marked wheel in the pics below if the accurate running chrono is an issue for you.. Quote Link to comment Share on other sites More sharing options...
lhooq Posted March 15, 2011 Report Share Posted March 15, 2011 What should I look for when sourcing a valjoux 7734 to know it'll fit/work in the build? Can my stupid untrained eyes spot the 45 min recorder? Do you mean from the front or the back? If you're scanning scores of 70s chronographs that aren't explicitly labeled "Valjoux 7734", you want to zero in on the ones that are bicompax with a date at 6. Preferably, you want to see 15/30/45 printed on the right subdial. Preferably, the date will be in black, and resemble the gen font. If you can't make out either of these details, you're taking a very big chance! If you're looking at a picture of the movement, orient it so that the V-shaped chronograph bridge is pointing down. The minute recorder is on the right, partially obscured by the bridge. Count the number of teeth on one third of the gear. (This is easier than it sounds.) If you counted 15, you're good to go. And, yes, the chronograph will work. However, the minutes indicated will proceed in this sequence: 0,1.5,3,4.5,... EDIT: Well, there goes modelizer explaining things with pictures again! Quote Link to comment Share on other sites More sharing options...
thealphabeta Posted March 15, 2011 Author Report Share Posted March 15, 2011 That's a superb response. Thank you both for taking the time to respond - much appreciated. I'm fully armed to hunt for my movement now Quote Link to comment Share on other sites More sharing options...
modelizer Posted March 15, 2011 Report Share Posted March 15, 2011 No worries mate. Happy hunting! Quote Link to comment Share on other sites More sharing options...
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