calculating belt speeds?

[Abomination]

so i get

belt speed (15items a sec) and divide that by number of lanes? (15*2) and the max number a belt can carry is 6 items? so (15*2) x (6) and then times that by furnace melt speed? so (15*2) x (6) x (1)?

is this currect?

[piccolo255]

What? No :) For a belt speed of 15 items/sec, if both lanes are moving at full speed, the throughput is 15 items per second. There are no calculations to do here. Except maybe per-lane speed, which is half the full-belt speed, so in this case 7.5 items per second on each lane.

If you need, for example, 30 iron plates per second, you need two yellow belts. Done.

[Abomination]

Originally posted by piccolo255:

What? No :) For a belt speed of 15 items/sec, if both lanes are moving at full speed, the throughput is 15 items per second. There are no calculations to do here. Except maybe per-lane speed, which is half the full-belt speed, so in this case 7.5 items per second on each lane.

If you need, for example, 30 iron plates per second, you need two yellow belts. Done.

so its 1 miner per 2 furnaces, 7.5 rounded (belt speed) to 8 furnaces is 4 miners?

and i use a splitter and calculate that by dividing it?

[fst911]

performance being ~2/3 without compression... (if belt view like full)

[Abomination]

so i mix coal and iron,

iron and coal on both sides of a lane, i want 7.5 iron and divide by 2 because of the splitter, so thats 4 furnaces and 2 miners, two on each side producing 8 iron a secand?

[fst911]

I think IRL ~4.5-5

#1) -round-down- (my fool, no need rounding)
2) without compression ~2/3 speed
3) yellow inserters without upgrades sometime make delays

[Abomination]

Originally posted by fst911:

I think IRL ~4.5-5

1) round-down
2) without compression ~2/3 speed
3) yellow inserters without upgrades sometime make delays

i tried this, but i got 5 miners and i cant quite seem to satisfy it, i have 8 furnaces and its chewing though a fair amount of ore still

[Abomination]

Originally posted by fst911:

I think IRL ~4.5-5

#1) -round-down- (my fool, no need rounding)
2) without compression ~2/3 speed
3) yellow inserters without upgrades sometime make delays

can you explain the 2/3 ratio

[piccolo255]

* One lane (half-belt) of a yellow belt of iron ore: 7.5 items/sec
* One electric miner produces 0.5 ore/sec.
=> 2 el. miners produce 1 ore per second.
=> 4 el. miners produce 2 ore per second.
=> Etc., for X ore per second we need 2X miners.
=> We need 2*7.5 = 15 electric miners to fill one lane of a yellow belt.

* One lane of a yellow belt of iron plates: 7.5 items/sec
* Stone furnace crafting speed: 1
* Time cost for one iron plate: 3.2
=> One stone furnace crafts 1 iron plate per 3.2 second
=> If we had 3.2 stone furnaces, we could make 1 iron plate per 1 second
=> If we had 6.4 stone furnaces, we could make 2 iron plates per 1 second
=> Etc., for X plates per second we need 3.2X stone furnaces.
=> We need 7.5 plates per 1 second
=> We need 3.2*7.5 = 24 stone furnaces

So, for one yellow belt which is has half ore and half coal, you need 15 el. miners for ore and 24 stone furnaces to smelt. Since steel furnaces are twice as fast, you only need half as many; you'd need 12 steel furnaces for one half of a yellow belt.

Rounding, belt compression, and inserter delays that fst911 may have mattered a long time ago, but current belt mechanics are very optimized and those are no longer relevant.

[Colonel Sanders Lite]

Originally posted by piccolo255:

for one yellow belt which is has half ore and half coal, you need 15 el. miners for ore and 24 stone furnaces to smelt. Since steel furnaces are twice as fast, you only need half as many; you'd need 12 steel furnaces for one half of a yellow belt.

Just to confirm - this is correct.

If you're running 0.16 the math on the smelting column is a bit different but still give the same result. The miner math is totally different in 0.16, but the math posted by piccolo is correct in the 0.17 experimental with one exception - If you have researched any mining productivity, your miners will be more productive.

edit - make that two exceptions. At some point in the future you may want to mine uranium which mines 0.25/sec.

[Abomination]

Originally posted by piccolo255:

* One lane (half-belt) of a yellow belt of iron ore: 7.5 items/sec
* One electric miner produces 0.5 ore/sec.
=> 2 el. miners produce 1 ore per second.
=> 4 el. miners produce 2 ore per second.
=> Etc., for X ore per second we need 2X miners.
=> We need 2*7.5 = 15 electric miners to fill one lane of a yellow belt.

* One lane of a yellow belt of iron plates: 7.5 items/sec
* Stone furnace crafting speed: 1
* Time cost for one iron plate: 3.2
=> One stone furnace crafts 1 iron plate per 3.2 second
=> If we had 3.2 stone furnaces, we could make 1 iron plate per 1 second
=> If we had 6.4 stone furnaces, we could make 2 iron plates per 1 second
=> Etc., for X plates per second we need 3.2X stone furnaces.
=> We need 7.5 plates per 1 second
=> We need 3.2*7.5 = 24 stone furnaces

So, for one yellow belt which is has half ore and half coal, you need 15 el. miners for ore and 24 stone furnaces to smelt. Since steel furnaces are twice as fast, you only need half as many; you'd need 12 steel furnaces for one half of a yellow belt.

Rounding, belt compression, and inserter delays that fst911 may have mattered a long time ago, but current belt mechanics are very optimized and those are no longer relevant.

mate, thank you so much, how did you find the time it takes to melt iron ore? where did the 3.2 come from?

[piccolo255]

Originally posted by A Hacking Player:

mate, thank you so much, how did you find the time it takes to melt iron ore? where did the 3.2 come from?

You're welcome :)

For smelting time, all items should be listed to the right of your inventory, in the crafting interface (even those you can't craft manually, like plates). Iron plates are in the "Intermediate products" tab, near the top (exact place will change as you research more).

The number next to the clock icon is how many seconds it takes to craft an item with crafting speed 1. With crafting speed 2 it will take half as long, with crafting speed 0.5 it will take twice as long.

[Xero Effect]

* is used for multiplication btw... should just do / for division or you look like a middle school educated math student lol...

[Abomination]

Originally posted by Xero Effect:

* is used for multiplication btw... should just do / for division or you look like a middle school educated math student lol...

sorry, i was so use to useing excel and couldnt remember what was for what

[Estelyen]

There are countless Factorio calculators out there, I prefer https://doomeer.com/factorio/index.html#s3732Pbbbbbbbbbbbbbbrgrgrrrrgrrr15grgrrrrrrrrrrrrrrrrrrgrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrr this one. Of course it's nice to understand the underlying mechanics, but once you get the hang of it, it becomes tedious to calculate every ratio yourself :P

[Abomination]

Originally posted by Estelyen:

There are countless Factorio calculators out there, I prefer https://doomeer.com/factorio/index.html#s3732Pbbbbbbbbbbbbbbrgrgrrrrgrrr15grgrrrrrrrrrrrrrrrrrrgrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrr this one. Of course it's nice to understand the underlying mechanics, but once you get the hang of it, it becomes tedious to calculate every ratio yourself :P

♥♥♥♥♥♥♥♥♥, thank you