How do I work out ratios?

[Mike]

I really, really have no idea how to do it, I can't understand how people come up with the ratios.

I'd like to work with a system of 1 Science Pack per second (that goes for red, green, the works).

[Estelyen]

I use the handy Factorio planner for things like this: https://doomeer.com/factorio/index.html#s1132bbbbbbbbbbbbbbrrrrrrrrrrrrrrrrrrrrrrrrr1r1r1r1r1r1r1rrrgrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrr

[Ramond]

Do take note of the crafting speed of your production buildings though. An Assembly Machine 1 has 0.5 crafting speed, meaning it takes double the time to craft items. AM2 needs 1.33x the time, while AM3 only 0.8x the time.

[Kinder Lijk]

Estelyen の投稿を引用：

I use the handy Factorio planner for things like this: https://doomeer.com/factorio/index.html#s1132bbbbbbbbbbbbbbrrrrrrrrrrrrrrrrrrrrrrrrr1r1r1r1r1r1r1rrrgrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrr

This website is a great tool :)

[BitterSwede]

The math may seem imposing, but if you divide everything up into sections, you'll see that it's really something a 5th grader can handle with ease. It's less scary than it looks :) Start with the finished product and work your way backwards.

Science Pack 1 takes 5 seconds (base speed) to produce and requires a copper plate and an iron gear. One per second is the same as 5 every 5 seconds, so we know we can do it with 5 assembly 1's without any bonuses.

Ok, so now we need to feed 5 machines once every 5 seconds. That means we need 5 gears every 5 seconds. A gear takes half a second to make, so we know we get 2 gears per second in a tier 1 assembler. This means we'll get 10 gears in 5 seconds from a single tier 1 assembler. That gives a surplus, but that is fine, we can use that later in case we want to expand. That gives us enough gears to double production.

To feed the iron gear assembler, we need to make sure it has 2 iron plates every half a second. The only thing we have at that early stage that can do that would be a fast inserter, though you could use two normal inserters too. You need to extract at the same speed, since it gives one product per operation, so mirror the number of inserters on the output side as well.

Now all you need to do is add a copper plate. We know that a yellow belt can handle 13.33 items per second, that means we have just over 6 items per side per second. Since we need 1 item per side every second, a yellow belt is more than enough to fill both, so put the copper on the side opposite the gears.

So we will need 10 iron plates and 5 copper plates per 5 seconds, or 2 iron plates and 1 copper plate per second. Smelting both requires one ore every 3.5 seconds and 1 coal every 44 seconds in a stone furnace. To get the 2 iron you need per second, you therefore need 7 stone furnaces with 7 ore coming in (3.5 * 2). For the copper, you'll need 4 furnaces and will get 1 plate surplus per operation.

There you go, full walkthrough of how to do the maths for ratios and how to figure them out from raw resource to finished product. Adjust all timings accordingly when going to faster belts, higher tier assemblers or adding modules.

Hope it helps.

[ShutEye_DK]

BitterSwede の投稿を引用：

...
Science Pack 1 takes 5 seconds (base speed) to produce and requires a copper plate and an iron gear. One per second is the same as 5 every 5 seconds, so we know we can do it with 5 assembly 1's without any bonuses.
...

AM1 takes 10 seconds for a SP1. It has a crafting speed of 0.5.
So you would need 10 of them :)

[BitterSwede]

ShutEye_DK の投稿を引用：

BitterSwede の投稿を引用：

...
Science Pack 1 takes 5 seconds (base speed) to produce and requires a copper plate and an iron gear. One per second is the same as 5 every 5 seconds, so we know we can do it with 5 assembly 1's without any bonuses.
...

AM1 takes 10 seconds for a SP1. It has a crafting speed of 0.5.
So you would need 10 of them :)

Wait, how does that work? One assembler of gears still take half a second, doesn't it? Or have I completely lost my sense of Tier 1 stuff?

[ShutEye_DK]

BitterSwede の投稿を引用：

ShutEye_DK の投稿を引用：

AM1 takes 10 seconds for a SP1. It has a crafting speed of 0.5.
So you would need 10 of them :)

Wait, how does that work? One assembler of gears still take half a second, doesn't it? Or have I completely lost my sense of Tier 1 stuff?

Forget about "Tiers". Look at the reported crafting speed.
AM1 0.5, AM2 0.75, AM3 1.25 and your pocket 1.0.

Those are the base number, meaning no speed modules.
With 4 SM3 in an AM3 the number rises to 3.75. Meaning a SP1 can be made every 5 / 3.75 =
1.33 sec. And then there are beacons... :)

Your explained materials ratios still match (as your numbers relative to each others don't change) but would only result in 0.5 SP1/sec.

Edit: And no. An iron gear wheel takes 1 second in an AM1.

Edit2: Just for the fun of it: An AM3 surrounded by 9 beacons (unlikely scenario) all stuffed with speed modules 3, gives a crafting speed of 8.75. 5 / 8.75 = 0.57 second for a SP1 lol :)

[BitterSwede]

ShutEye_DK の投稿を引用：

BitterSwede の投稿を引用：

Wait, how does that work? One assembler of gears still take half a second, doesn't it? Or have I completely lost my sense of Tier 1 stuff?

Forget about "Tiers". Look at the reported crafting speed.
AM1 0.5, AM2 0.75, AM3 1.25 and your pocket 1.0.

Those are the base number, meaning no speed modules.
With 4 SM3 in an AM3 the number rises to 3.75. Meaning a SP1 can be made every 5 / 3.75 =
1.33 sec. And then there are beacons... :)

Your explained materials ratios still match (as your numbers relative to each others don't change) but would only result in 0.5 SP1/sec.

Edit: And no. An iron gear wheel takes 1 second in an AM1.

I've gotten that completely backwards then... I mean, I know in everything else, the speed is relative to base speed, but I've always stocked my AM1's with blue inserters for 0.5 base speed operations... No wonder my production early game seem to take twice as long... xD

Thank you!

[ShutEye_DK]

BitterSwede の投稿を引用：

ShutEye_DK の投稿を引用：

Forget about "Tiers". Look at the reported crafting speed.
AM1 0.5, AM2 0.75, AM3 1.25 and your pocket 1.0.

Those are the base number, meaning no speed modules.
With 4 SM3 in an AM3 the number rises to 3.75. Meaning a SP1 can be made every 5 / 3.75 =
1.33 sec. And then there are beacons... :)

Your explained materials ratios still match (as your numbers relative to each others don't change) but would only result in 0.5 SP1/sec.

Edit: And no. An iron gear wheel takes 1 second in an AM1.

I've gotten that completely backwards then... I mean, I know in everything else, the speed is relative to base speed, but I've always stocked my AM1's with blue inserters for 0.5 base speed operations... No wonder my production early game seem to take twice as long... xD

Thank you!

Twice as long is spot on hehe :)
And you're welcome!