Trains

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DRBLN
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Trains

Post by DRBLN »

What are the benefits of trains?

Belts seem to be much more efficient.

Spider
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Re: Trains

Post by Spider »

Most people use them to get resources from far aways after all nearby ressource fields are depleted.

Psycho0124
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Re: Trains

Post by Psycho0124 »

Excellent. I get to abuse my calculator again. :twisted:

Say you had a big hungry factory; it requires 10,000 items per minute (copper, iron, coal, stone). Say those resources were 1000 tiles away.
At ~1800 items per minute per express belt, you'd need 6 Express belts side-by-side to get the throughput you need(!). At 31.5 Iron per tile, you're looking at 31,500 iron to get the job done (not to mention the mess at the factory to handle all those belts).
Or you could just spend 2,750 Iron and 500 stone on rail tracks, 335 iron on a train and 3 cargo wagons, and transport the same amount of material. Since cargo wagons can each carry 960 items (15 stacks technically but all resources stack to 64), a train with 3 cargo cars could handle the job with 4 trips per minute (with sufficient inserter stack size bonuses for loading/unloading).

Belts are many times more espensive and their capacity is limited. Once you lay a train track, you can always run more trains on it. I have one section of track in my game that regularly sees a 2-car train once every 5 seconds. Max throughput for that line is somewhere around 38,000 items per minute (same as 21 express belts side-by-side!!) if all trains were 100% full. No telling how high you could push it with more trains and tighter signaling.. :D

jeroon
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Re: Trains

Post by jeroon »

Why would anyone need an excuse to play with trains? ;)

Just trying to create a complicated rail network is a game in itself, although I hope 0.9 gives us a bit more ways to control the trains :)

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ssilk
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Re: Trains

Post by ssilk »

Some general terms: ( there is a wiki article, but that's written before roboports https://forums.factorio.com/wiki/inde ... ch_case%3F )

- belts are most useable for constant needs of very big amounts of items in an area up to 500 tiles (but can work much longer). Perfect for the furnaces, or for the basic items like wheels, elec. circuits...
Well... Basic belts are much cheaper than express and can't be beaten by tracks, when keeping also in mind, how complicated tracks are. And it's easy to put them in parallel. I made some time ago, where I had 5 belts in parallel from 1000 tiles away. This can transport about 2000 items/minute. Which is enough for nearly anything. But I can't recommend to play it like so, it's just no fun, until you are a transport-belt-engineer and like to optimize the capacity.

- logistic bots are suitable for more complex stuff. After you created the first bunch of blue potion to reach logistics, it's an option to rebuild all with logistics. They are perfect to bring the basic items to some assemblies, which produce the higher stuff. Or they are the perfect train station. I think, that they have limits, I cannot recommend networks with more than 500 bots. It's better to have some networks than one big.

- trains are perfect to transport many items over long distances. Long is 200 tiles (2 radar sizes). But keep in mind, that you can use the already laying tracks to make a longer track, this is much more difficult with belts and is the biggest advantage of railway. When keeping this in mind, the logic tells you to begin as soon as possible with trains. :)

But there are some more reasons, than just the pure numbers: trains are pure fun. :) I constructed currently a network, which needs about three minutes to drive once around. Without stops. And once you constructed a train station with logistic bots that feels like... Hm... If you ever have built on a model railway, than this is it! You just stand there and watch and watch. :)
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