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RyMoeller last won the day on January 5

RyMoeller had the most liked content!

About RyMoeller

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    Watchmaking (naturally), Aviation, Formula One, and Family

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  1. RyMoeller

    Running Oh So Fast

    Thanks for the responses. It's nice to see a consensus as it gives me confidence with what to do next. I noted also the dirty read on the timegrapher as @clockboy pointed out and will see if I can clean that up a bit. Apologies for not responding earlier- my wife's Mini Cooper blew up and the repair has kept me quite busy and away from the desk!
  2. RyMoeller

    Running Oh So Fast

    This one is a real mystery so I thought I'd toss it up here in case someone else has come across this problem. I've reassembled the Speedmaster which was lacking parts (see my earlier inquiry) and have it up and running again. It's a long story, but amazingly, after missing a bundle of parts and being terribly neglected it's ticking away happily and the chronograph works a treat- but there is one BIG problem. The watch runs about two seconds per minute fast. That adds up pretty quickly. The timegrapher trace isn't too clean but it is consistent and it shows the watch running much better than that (note the image only shows about fifteen seconds of testing on the timegrapher- rest assured, I've had it on there a lot longer than that and have pretty much the same results in all positions) So why does the timegrapher show the watch running less than a minute off per day but the real world results are so much different? Well there are a few possible problem areas. The escapement may be the problem but the pallet and balance (complete) are NOS replacements from Omega. The escape wheel may be an issue- perhaps it's "slipping" and the pallet isn't locking consitantly. I haven't seen this on the timegrapher though nor have I seen it while watching the escapement under the microscope. Still, there are some obvious issues in the movement. Whoever disassembled it before I got it made a real mess of things. For example the Delrin wheel on the coupling clutch was vandalized terribly by a wayward screwdriver. It took quite a while to get the gear teeth back in order (the "before" picture is below). I secured a NOS replacement just in case the movement didn't accept the repaired coupling clutch. Despite this damage, I don't think the coupling clutch is the problem. The fourth wheel is positioned between the coupling clutch and the escape wheel. It's regulated by the escape wheel and the running seconds hand is attached to the fourth wheel. When I time how long it takes for the running seconds hand to make a full revolution using the stopwatch built into my iPhone, I come up with 58.02 seconds (give or take a few tenths). I'm thinking the problem lies with the fourth wheel. The Lemania 5012 chronograph movement (Tissot 2920) runs at a slower 21600 BPM. The replacement of the fourth wheel in this movement (a Lemania 5100, 28800 BPM derivative) with one manufactured for the 5012 movement would result in the watch running fast. It's questionable whether the gear teeth would mesh properly though. Right now it's just a guess. I may need to tear the movement back down to check the gear ratios for each of the wheels in the train to confirm they're the right wheels for the movement but before I do that I was hoping someone might have solved a mystery such as this before and have some good advice to offer! Thanks in advance for the comments as they are always helpful! Here's a few pics of the watch as it came together- just because posts with pictures are always more interesting. Before service begins... Why you should periodically replace your spring bars- Omega gaskets self destruct (turn into tar) if they aren't replaced for forty years... This movement is plastic fantastic but I love it. Other than not keeping time at all, it's the easiest chronograph movement I've worked on. Look at all those scratches- previous watchmaker's tool of choice- screwdriver or machete? It is a pretty beast though.
  3. RyMoeller

    Video Disassembly of 7750 Clone

    Thanks for sharing- I enjoyed that.
  4. RyMoeller

    “Replica” Rolex 3135 questions

    All of that goes under one bridge? Ugh. Generally that's called a three quarter plate movement since the plate covers 3/4 of the movement. You don't see that too often anymore except with older pocket watches and some chronographs. Getting it all lined up will be a real chore. Go slowly and don't force the issue. The fourth wheel and escape wheel pivots will bend or break in a heartbeat.
  5. RyMoeller

    8 day pocket watch

    Looks a lot like a Hebdomas pocket watch. I don't know much about them though other than the eight day claim.
  6. RyMoeller

    Speedy Auto movement removal...

    It looks like there are two or three dogs attached to the back of the DD module which secure the movement in the case (see the screws in the attached image at 1, 6, and 10 o'clock). Loosen the screws and you should be able to move the dogs to free the movement.
  7. RyMoeller

    My watch collection

    Wowzers. That's a lot of tickers!
  8. RyMoeller

    Omega 1045 / Lemania 5100 Part

    Thanks J- that's very helpful. As @rogart63 pointed out- I just discovered that ETA is producing a movement that's based on the 5100 again so I'll try that avenue as well.
  9. RyMoeller

    Omega 1045 / Lemania 5100 Part

    Thanks Stuart- I can't imagine why I didn't think to check Watchguy's listing. I've sent an inquiry to him today.
  10. I recently acquired an Omega Speedmaster automatic from the 1970's that has the Omega 1045 / Lemania 5100 movement inside. Long story short- the previous owner tried to service it and made a mess instead. I've managed to source all the parts I think I need except one for the automatic works- the Stop Spring (part no. 1414). This looks like a part I may be able to fabricate but if the original is available I would prefer that. Unfortunately I've come up empty with my usual suppliers. Cousins is the one one who may have it, but it's Restricted which I suppose means you need to be an Omega authorized technician (which I naturally am not) to purchase. If anyone has a lead to follow I would be most grateful for your assistance. This piece is a proper mess right now but I think I'm close to bringing it back from the dead.
  11. RyMoeller

    Polishing Gold Plated Case & Band

    I've heard Cape Cod cloths work well.
  12. Cool project. This is the second custom chronograph project to pop up here in the past couple of weeks. I hope you post pictures during the build because these are always interesting and fun to follow. You might want to try looking at some of the parts available for the Seagull ST1901 movement. I've been looking cases, hands, etc. online as I'm considering a build project using this movement. Both the Valjoux 7733 and Seagull ST1901 are derivatives of Venus chronograph movements- the 7733 traces it's lineage back to the Venus 188 and the ST1901 goes back to the Venus 175; both these Venus movements had much in common. You might find the cases available for the ST1901 will work with a 7733.
  13. Okay, I'm really excited to see how this plays out- I'll be checking back often. I will say it's a tall order to produce a watch in the end that looks better than that Aristo though! Good luck- and please keep posting!
  14. RyMoeller

    Help needed for some advice....

    This is a great project. I've heard that those old Seiko tubes couldn't be replaced but always figured there must be a way if you had the right tools and a bit of talent. I think someone else did the same job a while back and put together a document on it but I've long ago lost the links. I did a similar job to a chronograph cases a while back which had stripped out threads for the pushers. Like you I used stainless steel tubing and turned it down on a watchmakers lathe (Peerless 8mm). It wasn't too much work but it did take time- the RPMs need to be kept low and a carbide graver worked the best.