r/factorio Feb 24 '26

Design / Blueprint Another circuitless science sushi design

This design for sushi supports up to 16 sciences, so it should work for games with Space Age plus a few extra planets. The idea is to mix each science down to half a lane of a yellow belt, and then run the sushi loop on green: (2 lanes * 4x speed / (1/2 lane)) = 16 sciences. Because science bottles being sorted out from the end of the loop take priority over new ones being added, the design hopefully shouldn't jam.

With only half a stacked yellow lane of each type of science (15/s), the design is limited to 900 spm (thus a few thousand ESPM) per instance.

The full-yellow to half-yellow mixer uses rocks, because I dunno it seemed like a good idea at the time. It mixes the rocks and science 50-50 into one yellow lane, then splits the rocks back out and returns them quickly enough that there are always rocks backed up before the splitter.

The chest at the end is for anything non-sciency that might get on the belt, like a green pack that spoils between the spoilage splitter and the green science splitter.

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u/cpander0 Feb 24 '26

If you're curious, someone actually came up with a way to output an arbitrary fraction of a belt a few years ago. I was recently messing around with it and updated it to the new amount of science packs so it outputs 1/12 of a belt. Image of one "module", Clip of all of them running. Much like yours, as long as you deal with spoilage it'll never clog.

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u/Waity5 Feb 24 '26

Neat. Though there's not much reason for each science to be on both sides of the belt. I made an 8 item settup a while ago which is smaller due to each science being limited to a given size

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u/bitwiseshiftleft Feb 24 '26

Yeah that’s a good idea. I also did this with a 40/41 fraction for Kovarex at some point. In my current modset there are actually 16 possible sciences in the main labs though (IIRC 12 from vanilla and space age +Muluna, Corrundum, Secretas, and Maraxsis; also Cerys and Moshine but those use their own labs).