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[angrysully]

Hi, I've been going at my current fortress for while now and I began to build a screw pump system that would carry it about 13 z levels.  I built a windmill at the top, with 2 vertical axles and only one of the machines is powering up.  My question is, do I have to build an axle and/gear assembly on every level to connect all the pumps? Also if anyone has advice, please feel free to respond.  Much appreciated, thank you.

[Urist McRas]

No, if you build a pump stack. Probably yes, if you have some other design.

[GhostDwemer]

Pumps will only transmit power to pumps above and below them if there is a hole. Since there must be a hole, the pumps must be supported, meaning there is something to connect to (another pump, a gear, a vertical axle) above or below them.

[vanatteveldt]

http://dwarffortresswiki.org/index.php/DF2012:Screw_pump#Pump_stack

Has good pictures and explanation

[Hurkyl]

Also, keep in mind that a windmill can only power 4 pumps at best. If you look at any of the machines, you'll see how much power you're producing and how much power you're consuming: IIRC, a pump takes 10 units, and a windmill typically produces 20 or 40 units.

[angrysully]

Just figured out when you listed the pump, forgot to channel under each of the pump stacks...opps

Thanks for the help, much appreciated.