Hey there. Are there any decent sources for pre-made open heart or skeleton gear animations?
Not that I know of, but if you can make an image of a gear, you only need to put the rotational code in to make it spin. Then you just have to add various designs of gears, and spin speeds etc.
Google gear generator. There’s a website that lets you configure size and tooth ratios for properly meshed gears then output to a vector or png. They are just monochromatic outlines, but can be used as templates to create your own graphics. Then as Raptor says it’s just a case of applying some rotation in creator.
You can also look for gifs, they can be used in Sequence now.
If you’re interested in making an accurate gear train, there are a couple of free books that are useful references. They’re in the library of congress and free to download from there. One is Practical Course in Horology and the other is Modern Methods in Horology. Both were written in the first half of the 20th century and they’re a bit on the dry side. But they do explain gear ratios and have lots of other info. I also second @kvansant on googling gear generator. There are a few good ones out there. One that I initially thought was great, and ended up not being so useful, was geargenerator.com. Although it allows you to attach many gears together (as opposed to the usual two that many of the gear generator sites do), it’s not specifically geared towards watches, and so you can’t put the wheels (big gears) and pinion (small gears) together in the way that you would in a real watch. So, it’s good to learn the theory behind the ratios that make the gears move at the speeds that they do.