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− | + | {{Quality|Exceptional|11:29, 18 May 2015 (UTC)}} | |
− | {{Quality| | ||
{{av}} | {{av}} | ||
− | [[Power]] is used to drive devices, typically replacing or improving tasks normally done by dwarves, such as pumping [[water]] using a [[screw pump]], [[milling]] certain types of [[food]] at a [[millstone]], or moving [[minecart]]s. Power is produced by [[windmill]]s and [[water wheel]]s. | + | [[Power]] is used to drive devices, typically replacing or improving tasks normally done by dwarves, such as pumping [[water]] using a [[screw pump]], or [[milling]] certain types of [[food]] at a [[millstone]], or moving [[minecart]]s. Power is produced by [[windmill]]s and [[water wheel]]s. |
==Power requirements== | ==Power requirements== | ||
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* [[Gear assembly]]: (5) | * [[Gear assembly]]: (5) | ||
* [[Millstone]]: (10) | * [[Millstone]]: (10) | ||
− | * [[ | + | * [[screw pump]]: (10) |
− | * [[Roller]]: (2) per roller | + | * [[Minecart#Roller|Roller]]: (2) per roller |
* [[Water wheel]]: (10); produces 100 if active | * [[Water wheel]]: (10); produces 100 if active | ||
− | |||
==Power transfer== | ==Power transfer== | ||
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Single-tile rollers transfer power in all four cardinal directions. Rollers transfer power perpendicular to their direction and ''may'' transfer along their direction (it's unreliable). | Single-tile rollers transfer power in all four cardinal directions. Rollers transfer power perpendicular to their direction and ''may'' transfer along their direction (it's unreliable). | ||
− | Rollers need 1 rope and | + | Rollers need 1 rope and exactly as many mechanisms as an axle would need wood; they also may be built individually up to 10 tiles long, but have only the horizontal variant. Rollers consume 2x more power per tile than axles and need more materials. But they aren't used to connect along their direction anyway, and axles don't transfer perpendicularly on their own. When compared to axles ''combined with gear assemblies'', rollers are more efficient—the lower per-tile cost of an axle is offset by the gears on its ends eating power (10 total). |
{| | {| | ||
|'''Gear assembly''' | |'''Gear assembly''' | ||
+ | | | ||
|'''Roller (1x1)''' | |'''Roller (1x1)''' | ||
− | |||
|- | |- | ||
| | | | ||
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! Axle+Gears<br/>Power | ! Axle+Gears<br/>Power | ||
! Axle+Gears<br/>Materials | ! Axle+Gears<br/>Materials | ||
− | ! | + | ! one Roller<br/>Power |
− | ! | + | ! one Roller<br/>Materials |
|- | |- | ||
| 2 | | 2 | ||
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! Axles+Gears<br/>Power | ! Axles+Gears<br/>Power | ||
! Axles+Gears<br/>Materials | ! Axles+Gears<br/>Materials | ||
− | ! | + | ! one Roller<br/>Power |
− | ! | + | ! one Roller<br/>Materials<br/> |
|- | |- | ||
| 2 | | 2 | ||
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| human = zotho | | human = zotho | ||
}} | }} | ||
− |