I need to move some magma near to the surface. I have only 8 dwarfs, and no power. I can't get power because there is a total lack of subterranean water, and I dare not open holes to the surface for windmills because millions of zombies. (Actually it's not millions, I'm down to only 144 of them before my corpse crusher was broken by an oversized zombie.) I'm pretty bad at controlled cave-ins, so a magma piston isn't really viable. I'm thinking minecarts may be my best solution.
I need to know,
- Can impulse ramps provide enough force to raise an iron minecart full of magma?
- How many impulse ramps would I need per z-level of elevation?
- Is a dwarf's Push sufficient to make the first derail happen, on level ground?
- Do the impulse ramps need adjacent walls, like the climbing ramps do?
First of all impulse ramps are insanely powerfull and cannot be switched off, therefore they're very dangerous, moreso with magma.
5 or so of them would probably send carts flying and make them tumble and shoot magma on contact with an obstacle. Now to the topic:
1. yes, most likely it'll raise the cart several levels. You know, DF doesn't really honor energy conservation, so the energy acquired by going a z-level down if sufficient to climb several levels up.
2. I suppose it would be in the range between 0.2-0.4, though more testing is required.
3. Yes, that's how you start the things
4. Yes they do and the wall needs to be put in place before the ramp iirc.
EDIT: ugh, having reread your post I think now that you're better just making your dwarves haul some minecarts of magma to the surface. Assuming you want to power workshops, you only need two of them per workshop. Dwarves will haul the minecarts manually between two stops if they're not connected by tracks. Minecart helix with impulse ramps would be a far too long project for 8 dwarves to build.