Simple 3 to 2 belt merge

Circuit-free solutions of basic factory-design to achieve optimal item-throughput.
Involving: Belts (balancers, crossings), Inserters, Chests, Furnaces, Assembling Devices ...
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Circuit-free solutions of basic factory-design to achieve optimal item-throughput
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Koder
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Simple 3 to 2 belt merge

Post by Koder » Sun Sep 04, 2016 10:16 am

Hi everybody, it's very late here, and I happened to stumble across this while I was messing around with belts. It's a little 3 to 2 belt merge. Note: You will still want to balance your load if needed, this does not handle lane/belt balancing. It's compact enough to mirror and shove into a 4-belt belt (or even a lane) balancer to convert it to a 6-to-4 merge with balancing.

Image

Essentially I'm just taking each half of belt 3 and then merging it equally with belts 1 and 2. I haven't seen this layout anywhere, so I figured I'd post my findings. Let me know if you have feedback.

Edit: I decided to post a topic to the factorio subreddit. There is another design posted, and I decided to run some tests as well. I'm hopelessly addicted to this game, and have been for a long time :) https://www.reddit.com/r/factorio/comme ... elt_merge/

Edit 2: Here is my imgur album with a collection of my findings: http://imgur.com/a/1Li6W

Thank you!

Koder
Last edited by Koder on Sun Sep 04, 2016 11:47 pm, edited 3 times in total.

aober93
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Re: Simple 3 to 2 belt merge

Post by aober93 » Sun Sep 04, 2016 10:48 pm

uhhh im sure this is essentially the same:
a7.jpg
a7.jpg (37.55 KiB) Viewed 19289 times
ah i see where youre going

Koder
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Re: Simple 3 to 2 belt merge

Post by Koder » Sun Sep 04, 2016 11:49 pm

I created an album with a collection of my findings and explanation, and updated my post. I've been mainly testing belt priority when merging here.

mooklepticon
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Re: Simple 3 to 2 belt merge

Post by mooklepticon » Tue Sep 06, 2016 5:46 pm

I'd add one more balancer. See below.
balancer.png
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Deadly-Bagel
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Re: Simple 3 to 2 belt merge

Post by Deadly-Bagel » Wed Sep 07, 2016 10:28 am

This answer is so obvious now. The third belt is split into two, then merged with each of the two output belts separately, so the first output has 100% of the first belt and the second output has 100% of the second belt, and both have 50% of the third belt. Then the last splitter you've just added evenly distributes that, splitting the first and second input belts each to 50% of both output belts, and because the third input belt is already balanced it's unchanged.

It's much more efficient, both in space and processing time, than the other merger I found and was using (which involved a loop so it took quite some time for all the items to eventually filter through if the input dried up).
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Re: Simple 3 to 2 belt merge

Post by LoggerM » Thu Sep 08, 2016 11:24 am

Image
The problem with this design:
Both inputs of the 2. splitter needs already 2 full lines to create 2 full belts.
The combination of belt 1 and 2 losts his funktion in the bottle-neck to the 2. splitter, because it can only carry 1 full yello Belt with no extra to fill up the gaps at the 3rd belt.

But this setup will work fine with red splitters on yellow Belts btw.

So, Koders Sugestion is realy good.

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Re: Simple 3 to 2 belt merge

Post by LoggerM » Thu Sep 08, 2016 11:38 am

After a moment of thinking I found a nother way to do it.
Its a bit shorter but needs 1 tile to the side.
Aufteilung.png
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Shadewing
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Re: Simple 3 to 2 belt merge

Post by Shadewing » Tue Sep 13, 2016 5:10 am

That one doesn't work I'm afraid. If input is A, B, and C and output is 1 and 2. Nothing from A gets to 2 and nothing from C gets to 1.

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Re: Simple 3 to 2 belt merge

Post by Zeblote » Tue Sep 13, 2016 6:36 am

mooklepticon wrote:I'd add one more balancer. See below.
balancer.png
Seems like this will favor the 3rd belt?

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Re: Simple 3 to 2 belt merge

Post by PyroFire » Wed Sep 14, 2016 9:40 pm

Here you go

Image

i'll add more of these variations to my other thread.
viewtopic.php?f=8&t=31498

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Optera
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Re: Simple 3 to 2 belt merge

Post by Optera » Fri Sep 16, 2016 4:18 pm

3-2 merge builds depend on what you want.

count perfect output:
3-2 simple.jpg
3-2 simple.jpg (74.53 KiB) Viewed 18252 times
count perfect output & equal drain on all 3 inputs:
3-2 feedback.jpg
3-2 feedback.jpg (105.09 KiB) Viewed 18252 times

zebediah49
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Re: Simple 3 to 2 belt merge

Post by zebediah49 » Fri Sep 16, 2016 8:42 pm

LoggerM wrote:After a moment of thinking I found a nother way to do it.
Its a bit shorter but needs 1 tile to the side.
Aufteilung.png
This shares the issues that the original one had, but for a case without weird loads would work fine.

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Re: Simple 3 to 2 belt merge

Post by ssilk » Sat Sep 17, 2016 11:26 am

Cool suggestion: Eatable MOUSE-pointers.
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theDemolisher13
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Re: Simple 3 to 2 belt merge

Post by theDemolisher13 » Sat Nov 09, 2019 7:26 am

Optera wrote:
Fri Sep 16, 2016 4:18 pm
3-2 merge builds depend on what you want.

count perfect output:

3-2 simple.jpg

count perfect output & equal drain on all 3 inputs:

3-2 feedback.jpg
Do this work as a 2 to 3 as well? I need something to fit in a 4 wide and no longer than 10 long

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