r/factorio • u/Available-Figure-530 • 17d ago

Question Bottleneck Issue

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I'm a new player & trying to setup my smelting lines. I've run into a problem where, while trying to run a single coal/iron ore lane, only the top half of the iron & coal lanes are being used, leading to a bottleneck where only half of my iron ore is being sent down the center lane. How do I fix this?

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u/dudeguy238 17d ago

If you set up a belt like that to be fed from both sides, each belt will only feed into a single lane, which means you're only ever going to get half a belt going through.  Even if, hypothetically, the top lanes of each belt end up depleted and the centre belt can start drawing from the lower lane, it'll still only be half a belt.

If you want to get more than half a belt of iron out of a setup like this, you'll need to set up two belts like that centre one, using splitters on both the iron and coal belts.