Clock/chrono Second Hand Stem Diameter
#91
Thanks for the reply…..looks bowed to me. I guess the three times the car has been in the sun for a few hours,…
I REALLY don’t want to go after the thing twice, but like all good things some take practice…..I’ll order a hand asap. Finally my watchmaking skills will be put to use alongside my mechanic skills, not helped whatsoever by my eyes these days.
I REALLY don’t want to go after the thing twice, but like all good things some take practice…..I’ll order a hand asap. Finally my watchmaking skills will be put to use alongside my mechanic skills, not helped whatsoever by my eyes these days.
- Glue could work (especially if coupled with snipping), but I don’t have the heart to glue something in a watch movement
- snipping enough off the tip to prevent interference and reduce bowing should work
- installing a non-bowing replacement hand (as here) should work
#93
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Demon: Is your micrometer like mine where it tends to deviate 2-3/100ths after each use unless Re-zeroed? I’m sure you’re going to print something cool but in case you wanted to try a metal hand for now: With a quick snip to length, this 1.30mm hour hand may https://www.esslinger.com/watch-hand...e-size-1-30mm/
You may also want to order one of the 1.35 options just in case:
https://www.esslinger.com/watch-hands-to-fit-minute-hand-hole-sizes-80mm-85mm-and-hour-hand-hole-size-1-35mm/
https://www.esslinger.com/watch-hands-to-fit-minute-hand-hole-size-75mm-and-hour-hand-hole-size-1-35mm/
If you go with the sweep (stick) style rather than the pointy (Dauphine) style, I have a matching second (in your case minute) hand leftover that I can mail you. Just PM me your address & it’s on the way.
Demon: Is your micrometer like mine where it tends to deviate 2-3/100ths after each use unless Re-zeroed? I’m sure you’re going to print something cool but in case you wanted to try a metal hand for now: With a quick snip to length, this 1.30mm hour hand may https://www.esslinger.com/watch-hand...e-size-1-30mm/
You may also want to order one of the 1.35 options just in case:
https://www.esslinger.com/watch-hands-to-fit-minute-hand-hole-sizes-80mm-85mm-and-hour-hand-hole-size-1-35mm/
https://www.esslinger.com/watch-hands-to-fit-minute-hand-hole-size-75mm-and-hour-hand-hole-size-1-35mm/
If you go with the sweep (stick) style rather than the pointy (Dauphine) style, I have a matching second (in your case minute) hand leftover that I can mail you. Just PM me your address & it’s on the way.
Apologies I haven't got any updates at the moment. Work and home life have been busy so not had a chance to further refine the design or even print yet, but hoping to have a test print done this week and report back!
Thanks all for the support.
The following users liked this post:
FormerRotor (08-08-2023)
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oz968 (08-08-2023)
#96
Just realized that my 970.2’s minute hand is loose, and hanging down at 6 O’clock position and is being knocked every time the second hand goes by. Here for the tips on the source for the minute hand.
#97
#98
Thanks for the reply! I see that you linked the hour hands of 1.3mm and 1.35mm options. But I guess I’m not sure whether the length of the hands would be compatible. The second hand you linked above has the length of 7mm, but the hour hand options have longer options only if I were to match the dauphine style.
#99
Thanks for the reply! I see that you linked the hour hands of 1.3mm and 1.35mm options. But I guess I’m not sure whether the length of the hands would be compatible. The second hand you linked above has the length of 7mm, but the hour hand options have longer options only if I were to match the dauphine style.
#100
Those results do look slick - I like the hand design/red detail. Do you know which seller it was? even if he doesn't share the size I might want to use him (couldn't find him searching on ebay).
That, @TMC. , is a deal. Given the prevalence of the issue I was amazed I couldn’t find the post diameter on forums anywhere but we’ll figure it out if no one else chimes in.
I found an eBay seller doing pretty slick rebuilds (below) and asked them for the info and/or if they’d be willing to sell second hands only. I completely understand why they wouldn’t send this info, but it’s worth a shot.
I like your approach, @twodollardoug . I took a similar (albeit slightly riskier) one for a temporary fix (sans superglue): heated the factory plastic hand and added a slight twist to relieve the stress/swelling when hot (below). So far so good, but I’d love to swap it out to a more rigid (possibly metal, although this will reduce the backlit feature at night) needle and give others the option to select their own style in the future as they please (finally putting the issue to an open-source end if no one else has already done so). Attractive small chrono sweeps are fairly easy to source and would be a cakewalk to install as long as we get the post dimension right.
I found an eBay seller doing pretty slick rebuilds (below) and asked them for the info and/or if they’d be willing to sell second hands only. I completely understand why they wouldn’t send this info, but it’s worth a shot.
I like your approach, @twodollardoug . I took a similar (albeit slightly riskier) one for a temporary fix (sans superglue): heated the factory plastic hand and added a slight twist to relieve the stress/swelling when hot (below). So far so good, but I’d love to swap it out to a more rigid (possibly metal, although this will reduce the backlit feature at night) needle and give others the option to select their own style in the future as they please (finally putting the issue to an open-source end if no one else has already done so). Attractive small chrono sweeps are fairly easy to source and would be a cakewalk to install as long as we get the post dimension right.
#102
@DemonBG did you ever settle on a source or part numbers for the 991 sport chrono? My needles just fell off and looking to replace them. My measurements are similar to yours for the hole -
0.37mm minute hand - 10mm
1.31mm hour hand - 8.5mm
Help with sourcing parts would be appreciated from anyone!
0.37mm minute hand - 10mm
1.31mm hour hand - 8.5mm
Help with sourcing parts would be appreciated from anyone!
#103
Ha, the other day I look over and what do I see? well, nothing, the second hand's fallen off. Nice to have a solution to work with. Esslinger away! ...now to track down some phosphorescent white paint.