u/Synethos

Hi all, I was wondering if anyone could tell me how feasible it would be to replace a 59tooth moon dial with a 55 tooth one. Id also be interested in changing the print on the disk, but the gear teeth would be the main question.

Is this at all possible? Im not an expert, so it feels like a small mod, but maybe it is not.

Hi, im a solar physicist looking for some amateur partners during this eclipse. For anyone who is in the path (totally or not) awho has a solex or a RGB camera or a dual/triband telescope, id love to get a specific time series during the eclipse, which should be usable for an academic publication if not clouded out.

Please shoot me a message if you are interested. :)

I started on biologics two months ago after a horrible 2-year torture trial with moisturising creams, UV treatment, and MTX, which led to everything getting worse and me developing arthritis and bone spikes in my toes. Now i might have to move to the UK for 5 years for a new job, and I am starting to get really worried about how this will go with medicine.

I can get about 3 months' worth of injections before the move, and after that I would be in the UK in the hands of the NHS, where the internet estimates waiting times of 1 year plus. How would that go? Can a GP write out a bridge prescription? I can't just stop and deteriorate while I wait.

It's awful how my life is finally normalizing and moving might not be possible due to this.

I would like to modify a mechanical moonphase watch so that the disc displays the rotation of the Sun rather than the phases of the Moon.

The Sun’s synodic rotation period is tracked using Carrington rotations and lasts approximately 27.28 days. A standard moonphase complication is based on a cycle of roughly 29.5 days. As I understand it, these mechanisms commonly use a 59-tooth wheel because the disc contains two lunar cycles.

To get closer to 27.28 days, a similar wheel would need approximately 55 teeth.

My questions are:

Would it be realistic to have a new 55-tooth wheel manufactured?

Could an existing wheel be modified, perhaps by removing several teeth so that the mechanism occasionally skips a day?

Would it be possible to reprint the existing moonphase disc, or manufacture a new disc with a solar design?

Are there other complications within the movement that make this less straightforward than simply changing the gearing?

I am considering using an affordable Seagull moonphase watch as the base, possibly one from the Ocean Star range. The aim is to create a unique but still reasonably affordable mechanical complication.

Does anyone have experience with this kind of custom modification, or recommendations for a watchmaker capable of producing small gears and custom-printed discs?

I would like to modify a mechanical moonphase watch so that the disc displays the rotation of the Sun rather than the phases of the Moon.

The Sun’s synodic rotation period is tracked using Carrington rotations and lasts approximately 27.28 days. A standard moonphase complication is based on a cycle of roughly 29.5 days. As I understand it, these mechanisms commonly use a 59-tooth wheel because the disc contains two lunar cycles.

To get closer to 27.28 days, a similar wheel would need approximately 55 teeth.

My questions are:

Would it be realistic to have a new 55-tooth wheel manufactured?

Could an existing wheel be modified, perhaps by removing several teeth so that the mechanism occasionally skips a day?

Would it be possible to reprint the existing moonphase disc, or manufacture a new disc with a solar design?

Are there other complications within the movement that make this less straightforward than simply changing the gearing?

I am considering using an affordable Seagull moonphase watch as the base, possibly one from the Ocean Star range. The aim is to create a unique but still reasonably affordable mechanical complication.

Does anyone have experience with this kind of custom modification, or recommendations for a watchmaker capable of producing small gears and custom-printed discs?