HootinNHollerin@lemmy.world to Science Memes@mander.xyzEnglish · 18 hours agoEven better than a cart of appleslemmy.worldimagemessage-square33fedilinkarrow-up1701arrow-down111
arrow-up1690arrow-down1imageEven better than a cart of appleslemmy.worldHootinNHollerin@lemmy.world to Science Memes@mander.xyzEnglish · 18 hours agomessage-square33fedilink
minus-squareLegoBrickOnFire@lemmy.worldlinkfedilinkEnglisharrow-up45arrow-down1·edit-217 hours agoThose are things that regulate the tension in the overhead cables on train tracks. With the variation of temperature cables tend to contract/expand and this systems allows the cables to do so freely with a constant tension provided by the weights.
minus-squaredrosophila@lemmy.blahaj.zonelinkfedilinkEnglisharrow-up1·3 hours agoThere’s a video about this that explains it pretty in depth.
minus-squareverstra@programming.devlinkfedilinkEnglisharrow-up20·17 hours agoThese are so simple and yet so clever. When i noticed them the first time i started noticing them everywhere (on all rail infrastructure).
minus-squaresomeacnt_@lemmy.worldlinkfedilinkEnglisharrow-up1·7 hours agoIs it simple? It looks quite complicated, but maybe that’s just me forgetting how to compute forces.
minus-squareSwedneck@discuss.tchncs.delinkfedilinkEnglisharrow-up2·6 hours agosimple in that it’s just a clever series of wires and pulleys, not some sort of digital adjustment device, i suppose
minus-squareverstra@programming.devlinkfedilinkEnglisharrow-up1·4 hours agoAlso, you are looking at a few different wires at once here. Each separate wire is tensioned with a mechanism with a few moving parts.
minus-squareRubberElectrons@lemmy.worldlinkfedilinkEnglisharrow-up5·14 hours agoI as well. Seattle transit, NEC Amtrak and NJ transit live off of these. If these systems work for them, they’ll work for us all
What’s it pull?
Those are things that regulate the tension in the overhead cables on train tracks. With the variation of temperature cables tend to contract/expand and this systems allows the cables to do so freely with a constant tension provided by the weights.
There’s a video about this that explains it pretty in depth.
These are so simple and yet so clever. When i noticed them the first time i started noticing them everywhere (on all rail infrastructure).
Is it simple? It looks quite complicated, but maybe that’s just me forgetting how to compute forces.
simple in that it’s just a clever series of wires and pulleys, not some sort of digital adjustment device, i suppose
Also, you are looking at a few different wires at once here. Each separate wire is tensioned with a mechanism with a few moving parts.
I as well. Seattle transit, NEC Amtrak and NJ transit live off of these. If these systems work for them, they’ll work for us all
The train duh