Stereo

Giving it a bit more thought and an actual "64t" gear to test on, the one I come up with is 1.5, 4.77, 5, though with the way I built a 1.5 edge does mean the middle axle is part of the planet carrier and it needs a 12T clutch gear for the sun. I only have 12t straight gears so I can't test how smooth this spins. The planets don't really have anywhere to go though, their rotation's synchronized, so maybe just building a 9.5L beam between them that skips over the centre would be good enough. Or you could use 10288 triple connector with 3L axles, and 32013 #1, and a 1.8 stud spacer (1L beam + 2 rings, should tighten down to slightly less than 1.8). 3 planets do barely work with this setup... I'm not sure they work in reality because 140 isn't divisible by 3 so the phase might not match closely enough.

They don't show the set limits anymore, so it's not really fair to say "the cap shouldn't change". if it's available you can buy it, that's all they intend to let you know. It's not like it gets cheaper at the end of the availability window. I suppose for people who intend to be resellers, it's good data on which set's got more demand than availability, but if you actually want the sets, you have lots of time.

If you're building it planetary anyway, you can make the planet carrier smaller with triangles. Eg. this 3-6-6 liftarm triangle has 4.9 studs width instead of 5 (0.8mm less), and then if you want to continue using 16N+8 gears (8, 24, 40, 64) you can just use beams to make another triangle of whole numbers (marked 4.9-5-5) that would work (I'm using 40t gears as a demo cause studio has them) I think 140 is in the 8N+4 set so it might just directly go 20-64-140 or something as well.

The Friends 42703 coaster is underwater themed so probably a bit too much overlap. Though I guess Atlantis colour scheme (red/black) is not much like the purple/tan.

The new Mewtwo set has LBG wheel arch extensions, I expect it's 71689 but it might be the smaller ones.

I imagine the axle hole has a stop, but can you put a bar through into the beam?

On the real one the tires are a bit short of half the height, so probably something about 7 studs tall and 2 wide would be ideal. I think that's like the Monster Jam tires but narrower.

I mean, it's also easy to calculate that a 1:8 semi truck would be ~8 feet long, 40 studs wide, and probably into the $3000 range

I think that wheel has a larger diameter? Probably the same functionality though. So combination stud & city bar axle hole, then pinhole with 6 spokes that can be an antistud. I tried to scale the pictures the same, which puts it at ~11.5mm to the one on the London Bus being 14mm diameter.

https://rebrickable.com/parts/5809/tyre-14-x-11-slick/ Looks like these tires, with a new technic pinhole wheel? Wider than https://rebrickable.com/parts/42610/wheel-11-x-8-with-center-groove/

Really depends how much friction it has, and how far it has to turn to ratchet to the next step, but a one-way clutch is the central component of a clock so it might allow more compact pendulum clock designs. As long as the spokes are a whole number length it'd probably be fine to rebuild it with thick beams if you want more strength, and use fullsize pins at the hub. They're using the new spoke piece and thin pulley to match aesthetics.

The box logo's in the top left, so diagonally that way works better a lot of the time, though that's another way of saying the same thing, why do we write left to right?

I'm pretty sure it's half pins, with the spoke and wheel parts both being half-thickness pinholes. They mount alternating sides. I can't tell if the wheel piece is symmetrical or if it's also offset to one side so that the two together create a 1 stud thick "beam" shape centered on the wheel.

~30 stud wheel/tire is enormous, might have some interesting GBC applications depending what it looks like under the tire. I like how it uses 12 spokes so it can just go onto a pair of the classic pulleys turned so their holes are 30° different.

The latest ones I have that it does catch on something are the Koenigsegg and Lamborghini. The Bronco and Jeeps of course nothing is that low (it only sticks up 2 studs) That new Mustang's 17 wide so it might just not fit... lower deck's also exactly 17 wide.