How do I split output unevenly using belts?

[jztemple]

I'm producing 420 of one item, of which 180 need to go one way and 240 another. How do I do that with belts and splitters? And I have the same issue with an output of 150, of which 60 go one way and 90 another. I'm thinking it ought to be simpler than using several layers of splitters, which is what I'm using now. Any help would be appreciated!

[Dreadlow]

Sometimes I use a smart splitter with priority given to the item that needs the most. If the flow is adequate the priority belt will fill and the overflow will feed the second production line with lesser need.

[Suzaku]

Either you manifold everything and let it sort itself out, or use belts/splitters to math it out yourself. I think there might also be mods that can do it, but I've not messed with that stuff at all.

As for this specific situation:
Split your 420/min mk4 belt into two mk 3 belts, then split one of those mk3 belts into either three mk1 belts and merge them, or a mk2 and mk1 belt and merge those onto a mk3 belt. The final outcome will result in the splitter with slower connected belts reducing the throughput to the final belt at 180/min, and the other belt you left alone receiving the remaining 240/min.

And for the other setup:
Split a mk3 belt into a mk1 and mk2 belt. Mk1 belt moves 60/min, the mk2 belt receives the remaining 90/min.

[jztemple]

Originally posted by Dreadlow:

Sometimes I use a smart splitter with priority given to the item that needs the most. If the flow is adequate the priority belt will fill and the overflow will feed the second production line with lesser need.

Yes, but I was trying to get a specific ratio of the items down each leg. It's odd that even after all these updates we don't have a splitter that will allow a ratio, in other words something like "the first three go left, the next two go right, the next three go left, the next three go right..." etc.

[jztemple]

Originally posted by Suzaku:

Either you manifold everything and let it sort itself out, or use belts/splitters to math it out yourself. I think there might also be mods that can do it, but I've not messed with that stuff at all.

As for this specific situation:
Split your 420/min mk4 belt into two mk 3 belts, then split one of those mk3 belts into either three mk1 belts and merge them, or a mk2 and mk1 belt and merge those onto a mk3 belt. The final outcome will result in the splitter with slower connected belts reducing the throughput to the final belt at 180/min, and the other belt you left alone receiving the remaining 240/min.

And for the other setup:
Split a mk3 belt into a mk1 and mk2 belt. Mk1 belt moves 60/min, the mk2 belt receives the remaining 90/min.

I never considered using specific belt types to effect the ratio. You have given me some great ideas there, thanks!

[Suzaku]

Glad I could help.

There's also the option of using manifold and just letting the machines do the sorting for you.

For example, if you're splitting ore 180/min in one direction and 240/min in another, then all you need to do is have 3 smelters in one direction and 4 in another. Even if all belts are at max speed and the distribution isn't what you want initially (being 210/min in two directions), once the resources hit and fill the smelters, they become limited by how much work the machines can do. So eventually you get the 180/240 split you were looking for.

[kLuns]

You can tell machines how much to produce and merge the amounts you need in the next process.

[F'lar]

The 180 split off of the 420 can be made even simpler using one splitter and one merger. 420 into the splitter, one Mk I belt one way, a Mk II the other, let the rest of the 420 run on. Merge the Mk I & II split off earlier which would be 120+60=180.