Okay, over 5 minutes... it was the contact offset. It’s basically solved now. The pendulum/rocker was off by like 3 mm along its axle. We’re in continuous ticking now. Need to fine tune a bit but the leveling is not that sensitive. With the proper contact it goes long.
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Dammit. Stopped at 4.5h. And now cat is rubbing aggressively against table it’s on. Not out of the woods yet.
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I'm going to have to resist the temptation to fight this endlessly. I mean this is laser-cut wood, push-fit assembled. Still, getting it to run a full spring-wind-down seems like not too much to ask. I don't need perfection. Just outlast the unwind.
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Rube Goldberg Chindogu idea... attach an arduino meta-control loop that notices if it stops via optical sensor interrupted by the pendulum, and gives the rocker a li'l kick if it does
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Anyone who gets this kit built and ticking smoothly on first attempt is some sort of mechanical genius. I’ve gone: 10s, 30s, 55s, 5 minutes, 25 minutes, 55 minutes, 4.5 hours, and now back to 20-30 min range. I suspect it’s the spring force wind-down.
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Yup. Rewound to full tightness and it’s going steadily again. I may be down in the noise zone of friction. It’s not a specific sticking point. To test this, I’d have to note all gear positions at each stall. Should be uniform random?
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I’ll measure this, but after first stall at 4:30, with each gentle impulse on rocker it went for a shorter interval each time. By the time it was ~1 minute, strength of initial impulse was determining the duration so pendulum was driving, not spring.
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I’m sciencing the shit out of this problem that Huygens cracked in 1658
Bringing up the rear of the scientific revolution like a boss.pic.twitter.com/njIIgjGPrP
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Looks like the spring is maybe not actually designed for 24h
Well let’s see how long I can get it to run, and how much energy is left in the spring when it runs out.
I’m guessing 5-6h with my slightly shoddy assembly, maybe 10-12 if perfectly assembled.https://twitter.com/Knipps/status/1306438464175403008 …Show this thread -
New record: 4:59....



Damn thing couldn’t scrape through to 5 huh
I’m gonna call this done. Looks like this is actually close to the spring limit. Probably only has another hour of juice left tops, if I keep rejogging the rockerShow this thread -
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