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[Nex Anima]

What I'm trying to do is move magma long distances to the front of my fort. The distance is at least 100+ and 4 wide. The mote is about 50x30. Playing .40d

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Now my issue, my magma pipe seems to drain faster then the spread. I had a smaller trench but it seem to get choked up where the pump transfers to, so I figured I could increase the flow by widening it. Which leaves me to my current issue.

Currently I'm in the process of testing multiple pumps along the trench line to to help push the flow along. Progress has been slow due to leaving a backdoor open causing the slaughter of 10 dwarfs resulting in the PTSD over over 70 friends. I could make a new trench 1 wide and try the relief pump method but at this rate, the ETC is about 10 years. I'm also worried about the FPS drop with all my hydropower plants and windmills. Is there a way to coax the pipe to refill faster or to increase the flow so I can at least get enough magma in my moat to keep it from evaporating till the pipe refills?

[Zaranthan]

The pipe fills as it will. If it's not filling fast enough, you'll have to institute a canal-lock system to avoid evaporation. Dam off the trench into blocks of X tiles, where X is approximately the area of the top layer of magma (preferably a few less, just to be safe). Fill the first lock, wait for the pipe to refill, then open the next lock.

Filling that lake at the end, though, is going to be a real engineering challenge. You can either hope you've got enough magma in the trench to get a 2/7 coating before the last pipe layer runs out, or you can do the math to figure out how to be sure.

[ThtblovesDF]

Let your dwarfs bucket-carry it over the map (jk)

[Nex Anima]

Ok, I think I have a plan. Now I just need to stabilize the population to get started.

edit: one question, can magma be dammed just like water by causing a natural stone cave in?

[o_O[WTFace]]

one pump can only move stuff as fast as the liquid flows into its input tile, which is pretty slow.  This is the limiting factor in your situation.  Try setting up a system where a bunch of pumps all pull from different sides of the pipe and output into a 1 wide channel leading to an area next to the moat.  You might want to make this part a bunch of z levels down, to ensure you will be able to pull enough magma to fill your thing up to 2/7.  Then pull it up and into the moat using a 1 wide pump stack.  Your pipe should have enough magma to fill the whole thing up fast enough to minimize evaporation, assuming you have enough pumps at the magma pipe end to ensure a pretty fast flow. 

Alternatively, set up not magma safe drawbridges in the moat in such a way as to make some barriers.  Fill up a section using your current system then wait for the pipe to recharge, then lower one section of bridges.  The pump will push magma on top of the lowered bridges, filling up the next section and disposing of the bridges at the same time.  Be sure the bridges don't atom smash your magma when they are lowered...

[Reese]

If you are using a pump, the magma will flow the same speed through a 1 tile wise corridor as through a 4 tile wide corridor- which is four times faster because there's only 1/4 as much corridor to fill.

If you have five pumps feeding a 1 tile wide corridor, it will flow at the combined rate of all five pumps pumping

as for filling- pretty much, what they said, or make a reservoir to hold more magma. (say a 10x10x10 room, pump it full of magma, wait for the pipe to refill, then pump from that and from your pipe simultaneously.)

[Nex Anima]

plan: First it to dig larger pits to hold the magma in, it will consist of 3 pits all about 20x60. Most likely decreasing in size to make up for the 1 level left over that won't be pumped.

2.) dig around the top fill lever of the magma pipe increasing its surface size by x2, this should trick it to fill much more then it normally would have thus allow me to pump more magma at time.

3.) dam up current trenches. need to do last due to risk of losing further workers due to magma mist.

4.) construct dwarven hydro plant to power pumps rough est power needed 185

5.) construct new pumps at the edge of each pit linking them up to levers in the dining hall

6.)pump till pit is full then pump into next pit and so on and so on.

[Zaranthan]

plan: First it to dig larger pits to hold the magma in, it will consist of 3 pits all about 20x60. Most likely decreasing in size to make up for the 1 level left over that won't be pumped.

Good plan. Only one heads-up:

2.) dig around the top fill lever of the magma pipe increasing its surface size by x2, this should trick it to fill much more then it normally would have thus allow me to pump more magma at time.

Be VERY careful with this! It's all too easy to make the top layer wide enough to evaporate on its own, and such situations are incredibly difficult to reverse (very fun, though).

Other than that,

3.) dam up current trenches. need to do last due to risk of losing further workers due to magma mist.

4.) construct dwarven hydro plant to power pumps rough est power needed 185

5.) construct new pumps at the edge of each pit linking them up to levers in the dining hall

6.)pump till pit is full then pump into next pit and so on and so on.[/quote]
All solid! Happy dwarfing!

[Nex Anima]

Seems to simple at the moment, Need to calculate the use of a kitten somewhere in the plan.

edit: Well I couldn't think of a way to use a cat in the process, so i just threw a kitten in the magma...

[dogstile]

why don't you build a couple of magma towers, then release them at the same time? Just keep anything you want alive away from the trench.

[Dave Mongoose]

one question, can magma be dammed just like water by causing a natural stone cave in?

A safer method is just carefully adding water - the magma will turn to obsidian and you're unlikely to get magma mist.

[Nex Anima]

Too late 

Luckly I only lost one planter I converted into a miner.

[Nex Anima]

why don't you build a couple of magma towers, then release them at the same time? Just keep anything you want alive away from the trench.

Lack of bauxite keeps me from doing it the easy way. Plus I need to save any bauxite I get to finish construction of the magma fall curtain elf greeter.

[Reese]

why don't you build a couple of magma towers, then release them at the same time? Just keep anything you want alive away from the trench.

Lack of bauxite keeps me from doing it the easy way. Plus I need to save any bauxite I get to finish construction of the magma fall curtain elf greeter.

if you set everything up right, you only need them to work once, so they don't need to be magma safe