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Eric
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8 minutes ago, Borg warner said:

Trains don't lean over very much when going around corners.

 

train.JPG

The railhead isn’t flat, it’s crowned, 

the wheels aren’t flat, the are inverted cone shaped. That why the flange is very important. It keeps the wheels on the rail , but let’s them “float” on a contact patch about the size of a dime. This take into account for curves and various rail geometry spread.

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Edited by Dric902
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1 hour ago, railfancwb said:

Seems a lot of hump yards are being removed or converted to flat switching. 

Unfortunately they are.

a two man crew can hump 800 plus cars on an easy day, two crews at a shift, three shifts. A whole class yard can be worked easily.

the companies decided to go with a remote controlled hump engine and a man with a box on his chest. Car counts dropped dramatically, rail damage increased, engine maintenance increased, accidents increased. Rather than going back to a hump crew, it was decided that humps are now inefficient and can be replaced by hours of road crews block swapping and yard crews flat switching (without kicking cars of course)

delays are huge

 

.

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