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Delgetti

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Delgetti last won the day on January 22

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  1. Delgetti

    Running Oh So Fast

    I think it's a gear ratio issue. A friend had a similar problem on a rolex 1570. He bought a spare part (in his case second wheel) on the internet. But the seller mixed parts of 1570 and 1530 which are very similar but have different numbers of teeth. So the wrong wheel fitted but established a wrong ratio. I would count the teeth on the wheels you replaced and compare that with the originals.
  2. Delgetti

    Help: Omega Ploprof 8500 bezel removal

    Afaik the official version is you need a bezel removing tool which goes into the small gap and lets the bezel pop off. But it can also be done with a watchmaker knife: I never did this by myself so I don't know how big the risk of scratches/damage is .
  3. Welcome Paul. I must admit I'm a vintage Rolex fan and looking forward to follow your project here.
  4. @nucejoe: Some additional information. When the watch arrived everything worked but amplitude was poor (220 deg dial up). While disassembly I took a close look at every part for damages (bent pivots, broken teeth, etc). After a rough cleaning with cleaning sticks and pegwood (especially for the fine pivots and the jewels to wipe off the old dirty lube) I cleaned all parts in an ultrasonic with elma 1:9 (except balance, balance jewels and pallets which were cleaned in bergeon one dip). After that I washed off the water and soap in benzinum. While assembly I checked every part for dust/little hairs before it went in. I did a rough endshake check with a pair of tweezers. After oiling the pallets and the watch running for 24 hours it showed good results on the timegrapher (290 dial up/down, 245 hanging, no waves). At this point I normally stop analyzing and start drinking beer. I never came across adjusting springs for endstones. I just opened the springs, cleaned and oiled the jewels, put them back, closed the springs and everything worked.
  5. First of all my apologies for not having documented the disassembling, but the watch arrived in a terrible condition and I stripped it down right away to get rid of all that dirt. If you have worked on some watches yet and think about entering the chronograph world with a 7734 let me give you 3 advices: Do it! The 7734 is a solid construction and not too complicated. Take your time and watch all the 6 parts of Mark's Venus 175-service on youtube. Of course the Venus is a column wheel system, but the basic movement is very similar and also on the chrono layer you can learn a lot especially about lubrication: https://www.youtube.com/watch?v=EI3T-IR3AgM Download the 7734 service manual. A lot of information here: https://strela-watch.de/valjoux-7734-7733-7736-technical-documentation/ Here we go. Some 8200 for the barrel and the new mainspring goes in (got it from cousins - what I'm gonna do after Brexit? ). The complete barrel. Some D5 for the arbor. Putting in the wheels and the bridges. Lubrication: 9010 for the escape wheel and the second wheel, D5 for all others. The keyless works. 9501 for the stem and the gears. D5 for the wheels and the lever axis, 9501 for the contact points of levers and springs. The click spring. D5 for the click and the crown wheel, 9501 for the contact point of click and its spring. Finally the ratchet wheel goes in. The pallets go back in, no lubrication for the pivots. Lubricating the balance jewels with 9010. The balance back in. The escape wheel and the pallets got epilame so I let run the movement with dry pallets for some minutes. After that 941 for the pallets (work from the dial side through the window). Now I start with the chronograph. First the bridge and the spring for the levers go in. Fly back lever goes in with some D5. Operating lever, again D5 for the axis. A little bit tricky, you must upline the integrated spring with the upper lever first (9501 for the contact area). The second pictures shows the final layering. The sliding gear goes in, D5 for the lever axis, no lubrication for the wheel! At this point I forgot to put in the minute recorder runner (no lubrication). You should install it here, later its going to be more difficult. The blocking lever (D5) returns. Some 9501 for the contact area to the sliding gear. The blocking lever spring. Be very careful, this one isn't just a flyer, its a damned Lockheed SR-71 Blackbird. The friction spring (gets a drop of 9010). The chronograph runner and its bridge (9010 for the long pivot and the jewel in the bridge). The minute recorder jumper, no lubrication. The hammer. D5 for the axis, 9010 for the lever ends that hit the hearts, 9501 for the contact areas to the sliding gear, fly back lever, operating lever, jumper. The hammer cam jumper. Before installing the clutch give 9010 to the pivots of the coupling wheel. D5 to the lever axis. The spring. 9501 for the contact point. Finally line up the driving wheel with the coupling wheel and the chrono layer is complete again! The dial side. Some 9501 and the cannon pinion goes in. Hour wheel with D5. The dial rest with its 3 screws. The date indicator. The date indicator driving wheel with some D5. The jumper with D5 to its axis. As there was no lubrication described in the manual between disc/jumper or disc/wheel and the parts looked well polished I didn’t lubricate. It works - let’s see how long. The guard with 2 screws. Finally the spring. The dial comes back and is secured with its 2 screws from the side. While disassembling I put the little hands into seperate trays to prevent mixing them up. Now I turned the crown in the setting position exactly to the point when the date switches and put on the hour hand to 12. Positioning the chrono-hand exactly on zero was that tricky that I forgot to take a pic. New springs and gaskets for the pushers. Unfortunatly I’m not good in restoring cases. So just refreshing the brushing a bit and some cape cod work. The movement back in the case and secured with 2 screws. A new gasket for the caseback and here we are. Thank you for watching.
  6. Delgetti

    Watch of Today

    A funny one arrived today.
  7. Delgetti

    Where can I get such a crystal?

    Thank you. Evr tite looks very good, but it seems it's only available in the US? I think I will try the ATCH as I have a cousins order anyway. If this one doesn't fit I will go for the evr tite.
  8. I'm working on a 7734 chrono and the crystal has some very deep scratches. Polishing doesn't really work so I would like to replace it. But I dont know where to look on the cousins webpage. The crystal wears a ring with a tachymetre scale on the inner diameter. The wall seems to be absolutly cylindric not conic. Outer diameter is aprox. 33.2 mm, inner is aprox. 31.3 mm, height 4 mm. Any ideas?
  9. Delgetti

    Rolex 3130 Amplitude

    I have the spec here lying in front of me (won't post a pic for copyright reasons). About amplitude for 3130 it claims 2 criterias: - after maximum winding: in dial up and dial down position amp must be smaller than 310 - after maximum winding followed by 24 hours unwinding: in crown down, crown left and crown up position amp must be higher than 200 There is no further comment how high the full winding amp should be
  10. Agree. But the horotec tool does also a good job: https://www.cousinsuk.com/product/microstella-regulating-tool-for-rolex-balances
  11. Hm, this doesn't make sense for me. A rolex 1575 doesn't have a regulator, it's regulated with the microstella-screw-system. If your watch has a balance cock with a regulator this may be a part from a 1520 calibre. But for this balance cock the 8106 spare part doesn't fit, you would need a 8055. Anyway, a picture of the movement would help.
  12. Delgetti

    Tech sheet for early Omega movement?

    Watchguy has some information I think (no oiling chart like ETA but there are advices in the text of some manuals): http://watchguy.co.uk/technical-instructions-service-manuals/
  13. Delgetti

    ETA 2752 Cannon pinion loose

    Thank you, I will try this within the next few days.
  14. Hello, I'm working on an ETA 2752. The watch showed the following behavior: About 30 minutes before date-change the minute and hour hand stopped, but the second hand continued to run. Manual date change was possible. I think the reason is very low to zero friction in the cannon pinion with driving wheel. Is it possible to increase friction in this part? How? Or do I have to look for a spare part? Thank you for any input.
  15. Delgetti

    Incabloc spring replacement

    I agree that a clear bag is a very good idea. When I had to do this task the first time this video helped: https://m.youtube.com/watch?v=HiAh4TkN25s
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