ceejay Posted January 22, 2015 Report Share Posted January 22, 2015 When I started training in Horology 18 months ago this was the movement I aspired to conquer. The chronograph movement is considered a year 3 topic at my training centre and I am half way through year 2, so I am a bit ahead I have battled through the manual wind movements from pocket watch size down to ladies size, day/date complications including instant change movements. Then it was on to the automatics, Seiko's 7--- series, ETA's 28-- series and some other more obscure manufacturers. Quartz servicing was blown away rather quickly Along the way I have also learn't theory & history of the various developments (amazing how old some features are!) Correct cleaning and lubrication and more recently regulation. How to diagnose problems and how to go about rectifying them. We are just starting lathe work, screw making and polishing. This is real good work. Anyway, I thought I was ready for the 7750 and using the excellent Swisslab ETA flash animation I got to work. I bought a ETA 7750 of a member here some time ago that was described as "serviced within the last year" but it had a very low amplitude on arrival ~190-200 and wouldn't run for more than a minute or two. Time to go to work, I won't bore you with what has been written about and photographed many times before, but it all when absolutely great This was after it had been cleaned and the gear train was installed and put on the timer. I nice amplitude of 300+ was recorded. Installation and lubrication of the chronograph cam. Chronograph module almost complete, very precise lubrication is required on these parts, I think I done well for my first effort. The crooked reversing wheel stays like that until you put the bridge on as there is a click spring that rests against it. Once you locate the chrono bridge there is a viewing hole where you release pressure from the spring as the wheel pinion is located in its hole That's the hard bit done! Fast forward and the dial side with additional chrono functions, keyless, motion works and date is complete. Before regulation it had a 0.9 beat error and was running ~45 seconds slow with a 300+ amplitude. This was after regulation, a success I believe 1 Quote Link to comment Share on other sites More sharing options...
sgtguk Posted January 22, 2015 Report Share Posted January 22, 2015 Bravo ceejay, great work mate! I'd be lost just taking the thing apart never mind getting it together again Quote Link to comment Share on other sites More sharing options...
GenTLe Posted January 22, 2015 Report Share Posted January 22, 2015 Lovely Ceejay! I'm wondering... You wrote you are doing an horologist course... How old are you and how do you manage to fit it in your day, imagining you've a work too? I'd like to do something like this too, but struggling to get the time! Quote Link to comment Share on other sites More sharing options...
ceejay Posted January 22, 2015 Author Report Share Posted January 22, 2015 I'm a very young 46 I do a evening class once a week. 3hrs per week. Yes I work full time. I am very lucky there is a unique training centre around 45 minute drive from where I live. My tutor is a excellent watchmaker who teaches all the old watchmaking skills and encourages us to practice the technician skills (modern movement servicing) in out own time. There is a formal qualification available to us but I am in no rush to follow that path yet, I'm having far too much fun Quote Link to comment Share on other sites More sharing options...
GenTLe Posted January 22, 2015 Report Share Posted January 22, 2015 I'm a very young 46 I do a evening class once a week. 3hrs per week. Yes I work full time. I am very lucky there is a unique training centre around 45 minute drive from where I live. My tutor is a excellent watchmaker who teaches all the old watchmaking skills and encourages us to practice the technician skills (modern movement servicing) in out own time. There is a formal qualification available to us but I am in no rush to follow that path yet, I'm having far too much fun That's feasible! For me too! And I believe there's something similar here in Milan too (where I actually work) Need to search a bit Quote Link to comment Share on other sites More sharing options...
kbh Posted January 22, 2015 Report Share Posted January 22, 2015 Very impressive. wish you were CONUS. I'd have one for you to work on. Quote Link to comment Share on other sites More sharing options...
Rolexman Posted January 22, 2015 Report Share Posted January 22, 2015 Well done! Quote Link to comment Share on other sites More sharing options...
369 Posted January 22, 2015 Report Share Posted January 22, 2015 Great job!!! Quote Link to comment Share on other sites More sharing options...
ceejay Posted January 23, 2015 Author Report Share Posted January 23, 2015 Thanks guys, I have a Sea-gull St19-- column wheel chronograph movement on the way. That's the next project. After that I am right back to the beginning to repair a Fusee pocket watch movement I broke when I first started training Good luck with your training GenTle! Quote Link to comment Share on other sites More sharing options...
Rolexman Posted January 23, 2015 Report Share Posted January 23, 2015 ST19 is a walk in the park if you have mastered the 7750. 1 Quote Link to comment Share on other sites More sharing options...
chaw6125 Posted January 23, 2015 Report Share Posted January 23, 2015 I'm a very young 46 I do a evening class once a week. 3hrs per week. Yes I work full time. I am very lucky there is a unique training centre around 45 minute drive from where I live. My tutor is a excellent watchmaker who teaches all the old watchmaking skills and encourages us to practice the technician skills (modern movement servicing) in out own time. There is a formal qualification available to us but I am in no rush to follow that path yet, I'm having far too much fun Where exactly is the place you do the course? I was looking for something like this before. Just for fun rather than a career change. Quote Link to comment Share on other sites More sharing options...
ceejay Posted January 23, 2015 Author Report Share Posted January 23, 2015 Where exactly is the place you do the course? I was looking for something like this before. Just for fun rather than a career change. I train here http://www.efhc.org.uk/ very relaxed, sociable training atmosphere. The only thing that concerns me about the ST19 is going from Swiss quality to Chinese, albeit the slightly better quality end of the market (?) Quote Link to comment Share on other sites More sharing options...
chaw6125 Posted January 23, 2015 Report Share Posted January 23, 2015 I train here http://www.efhc.org.uk/ very relaxed, sociable training atmosphere. Thank you. It's a shame it's just a bit too far for me to get to in time after finishing work. Quote Link to comment Share on other sites More sharing options...
Sparkal Posted January 23, 2015 Report Share Posted January 23, 2015 Wow. Nice work Quote Link to comment Share on other sites More sharing options...
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