vintage Nivada crono wrist watch dissasebly
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By Neverenoughwatches · Posted
It shouldn't be attached The pinions look independent of each other, not in alignment, but the clip is bothering me or have you just placed that on the pivot end? -
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By Neverenoughwatches · Posted
What this extra disk next to the pinion? Thats not part of the assembly -
It looks like the canon pinion function is part of this great wheel. The pinion nearest the clip runs the minute wheel on the dual side. The pinion nearest the wheel is driven by a small wheel from under the setting lever cover plate that engages in hand setting position. So when assembled the crown was driving the whole great train. Does this mean the pinions are too tight? Should I attempt to disassemble this great wheel and lubricants? -
Picking up this side-tracked post again as I just removed a balance staff of a 1920's Omega (35,5L-T1) I was impressed by the way @Delgetti had his setup when he had to change out a balance-staff (https://www.watchrepairtalk.com/topic/28854-new-balance-staff-not-riveting-to-balance/page/2/#comment-244054 Not only that, but also the idea of removing the seat first before punching the staff out from the seat-side, avoiding the whole discussion of the rivet yes/no enlarging the hole. I didn't have the fancy clamps & tools Delgetti has, so I used my screw-head polishing tool. Initially I used #1500 grit diamond paste on the steel wheel, which kinda worked, but very slow. I changed to #800 grit diamond paste, which worked better, but still slow. Then I glued #240 sanding paper to the steel disk; That worked and the disk was hand-driven. Once close to the balance wheel, I took the sanding paper off and continued with #800 diamond paste. One can only do this when the balance wheel sits true on the staff and has no "wobble". I went on grinding until I saw some diamond paste on the rim of the balance wheel. This was as far as I could grind and it seemed that there wasn't much left of the seat. Carefully, with my staking set, I knocked the staff from the seat-side out. Turns out that the thickness of the seat left, now a small ring, was only 0.1mm. The balance wheel hole is in perfect shape and no damage done to the wheel at all. Of course, if the wheel has a "wobble" or isn't seated true on the balance staff, you can't get as close and there will be more left of the seat. In my case, it worked perfect 🙂 I'm very happy how this method worked out ! 😊
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