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Here is a PoC:



It's based on the observation that the hub unloads from its top-left corner, and tanks can have arbitrarily large inventory size. So I set up a tank belt where only the two leftmost tanks have roboport coverage, and gave all tanks a big logic request for all sciences. The bots flies 2 tank's worth of distance at most, and the line is barely visible on the screenshot.

In the PoC I'm able to unload all the science for my 98 biolabs (fully beaconed with speed-efficiency pairs, mostly-legendary labs) with most my near-hub roboports staying idle. If I removed the leftover chests I should be able to fit two legendary inserters per belt and restore my previous 100k eSPM.

I remember car belts as weird massive throughput solution before.

But that tops it. Well done.

Excellent. Question, though. I don't know how to grow tanks' inventory arbitrarily. Of course adding utility belts makes a pretty large inventory but the gear grid is finite.

solublefish wrote: Sat Jul 05, 2025 8:37 pm Excellent. Question, though. I don't know how to grow tanks' inventory arbitrarily. Of course adding utility belts makes a pretty large inventory but the gear grid is finite.

A legendary tank full of legendary toolbelts has an inventory capacity of ~1055 slots

computeraddict wrote: Sun Jul 06, 2025 5:13 pm A legendary tank full of legendary toolbelts has an inventory capacity of ~1055 slots

Roger that. Certainly it's plenty I just thought you were saying it could keep growing, which would be a second awesome (cursed) trick.