automatico Posted July 6, 2016 Report Share Posted July 6, 2016 ...is a Bulova Precisionist type movement with stem position, hand sizes, date offset/font, and dial foot holes same as a rolex 3035/3135 (and maybe one for the Eta 28xx). Then you could store the rolex movement somewhere and wear the watch without having to worry about $1000 tune ups/repairs, running down, dropping it, not keeping time etc. I doubt it will ever happen because it makes too much sense. Guess I'll just have to buy an Accutron II. Quote Link to comment Share on other sites More sharing options...
Mike on a bike Posted July 6, 2016 Report Share Posted July 6, 2016 That would be sweet! Quote Link to comment Share on other sites More sharing options...
508-Fanatic Posted July 6, 2016 Report Share Posted July 6, 2016 10000% Almost makes me want to become a watch maker Quote Link to comment Share on other sites More sharing options...
dbane883 Posted July 6, 2016 Report Share Posted July 6, 2016 Why not use a Yuki 3135? Quote Link to comment Share on other sites More sharing options...
508-Fanatic Posted July 6, 2016 Report Share Posted July 6, 2016 1 hour ago, dbane883 said: Why not use a Yuki 3135? Good call Quote Link to comment Share on other sites More sharing options...
automatico Posted July 7, 2016 Author Report Share Posted July 7, 2016 "Why not use a Yuki 3135?" I would rather get away from a mechanical movement to something more reliable and does not need constant babysitting to keep it running. Imho the Y3135 is at the lower end of the mech movement scale because of the high buy in price and no parts (same as the genuine item). After all, parts make the world go 'round. Affordable parts that is. Quote Link to comment Share on other sites More sharing options...
Triplock Posted July 8, 2016 Report Share Posted July 8, 2016 Quality Swiss ETA movements are lifetime movements and don't require constant babysitting. Just routine maintenance. As much as I love mechanical movements I agree that a quartz movement with sweep second hand would be very cool if they would fit cases. 8 hours ago, automatico said: "Why not use a Yuki 3135?" I would rather get away from a mechanical movement to something more reliable and does not need constant babysitting to keep it running. Imho the Y3135 is at the lower end of the mech movement scale because of the high buy in price and no parts (same as the genuine item). After all, parts make the world go 'round. Affordable parts that is. Quote Link to comment Share on other sites More sharing options...
jmb Posted July 8, 2016 Report Share Posted July 8, 2016 I snagged a Bulova Accutron movement and cleaned it up and got it running. Talk about a smooth sweep hand! Plus, if you stick it up to your ear it hums too you! I'm going to see if I can mate it up to a dial and stick it in a Rollie case... Quote Link to comment Share on other sites More sharing options...
horologist Posted July 8, 2016 Report Share Posted July 8, 2016 5 minutes ago, jmb said: I snagged a Bulova Accutron movement and cleaned it up and got it running. Talk about a smooth sweep hand! Plus, if you stick it up to your ear it hums too you! I'm going to see if I can mate it up to a dial and stick it in a Rollie case... Problem is that most of them need a special type of battery known as he accucell, as those 1960's tuning fork mechanisms were designed for the 344 mercury cells that existed at the time. They ran on 1.33-0.35volts whereas the silver oxide batteries of today run on 1.5volt. Some run fast as a result of substitute batteries unless the movements are modified. There is usually the problem of double indexing. When replacing batteries make sure you don't lose the insulator under one of the battery terminal as you can kill the mechanism. Also the battery goes upside down compared to the mainstream modern quartz movements. The accucell battery is expensive and just a tad smaller as it has a circuit installed on it to accommodate for the movement. Being only 3/4 of the size you would not get the full term of the battery and need to change it sooner than he old mercury batteries. I had a dead 1968 NOS model which I then sold for parts in 2001 as I could not find a substitute quartz replacement due to the STM being at the number 4 position 1 Quote Link to comment Share on other sites More sharing options...
jmb Posted July 9, 2016 Report Share Posted July 9, 2016 I have this one running fine off one of the substitute batteries so no problem there. This also has the stem at 4 but with a no-date dial I figger it won't matter... Quote Link to comment Share on other sites More sharing options...
horologist Posted July 9, 2016 Report Share Posted July 9, 2016 2 hours ago, jmb said: I have this one running fine off one of the substitute batteries so no problem there. This also has the stem at 4 but with a no-date dial I figger it won't matter... Yours must have been the one that is modified to accept the substitute battery. I also have one older model that would not accept the modern silver oxide battery and I had one guy who was a specialist in fixing them do the modifications which costed at least 3 times more than the watch was worth. Only went along with the mods as it was a gift my late mother gave to my late father in the early sixties just before they got married!!! Quote Link to comment Share on other sites More sharing options...
jmb Posted July 9, 2016 Report Share Posted July 9, 2016 Can't say for sure. Once getting it running I needed to regulate it, and it's still running a few seconds/day slow but overall ir works fine. I have another that needs it's equiv. of a balance wheel and will run until it gets to the same spot on the wheel, thump it and it will restart. Lather, rinse, repeat... If I find that part I'll have another. Quote Link to comment Share on other sites More sharing options...
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