NYCRRson wrote: ↑Wed Feb 22, 2023 9:11 pm To all the pseudo electrical engineers posting here about "Let's just add power over Ethernet and microprocessors on every rail car... " "It will only be $20 per axle...."I don't recall ever discussing the price per axle. And I'm not a pseudo electrical engineer; I am a real one.
You have no idea of the complexity of converting the current USA rail car fleet from pneumatic braking to electro-pneumatic braking....I'm not sure how you can read my mind from so far away. I've never said it would be an easy conversion. But how long did the conversion to required roller bearings take? Seat belts/airbags in autos? [I can recall all the howls from Detroit...) TPMS?
I'd start with HHFT cars and locomotives for same. They'd need to be at the head of the consist, with following cars using existing system, or require all HHFT cars be in all-ECP trains. (I can hear the PSR screams already.)
I will never be convinced that applying all the brakes instantaneously (ECP) after a bearing/axle burns off near the front of the train will reduce the damages from a derailment very much,,,I've not said that it would. What would is temp sensors on each wheel, linked to the ECP. on each car. When it overheats, it reports the alarm, and maybe directly instigates a controlled immediate stop.
But PSR brings up many limitations of the "old way" of doing things. I've been reading https://www.railwayage.com/wp-content/u ... er-3.0.pdf
Management of In-Train Forces:
Challenges and Directions
and find it enlightening.