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Old 11-06-2023, 12:20 PM   #1 (permalink)
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'railroads to borrow from cars......finally!'

I talked with a physics guy and his high-schooler son yesterday at the laundromat.
They'd seen SPIRIT and wanted to talk about it for his son's class project.
The father's a railroad guy, and using his physics background to drag locomotive technology up to 1998 automotive hybrid levels.
Rather than lose all the train's braking energy to the locomotive's rooftop resistor heat, they're finally going to install Li-ion batteries to capture it all.
I'd mentioned the 670-hp worth of power that 12% photovoltaic array could capture atop a 1-mile train, and he seemed to get the light bulb moment.
Anyway, it's good news, to hear that our diesel-hybrid-electric trains will finally be diesel-hybrid-electric in the way we experience automobiles.

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Old 11-06-2023, 02:25 PM   #2 (permalink)
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A quick search suggests 3,200-6,000HP (18,000 max). Boxcars are fungible, and would require retrofit.

No idea what the rolling friction losses are for a mile long train, but 670HP in aerodynamics losses may be achievable.
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Old 12-08-2023, 03:52 AM   #3 (permalink)
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Old 12-08-2023, 02:09 PM   #4 (permalink)
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I must have missed something.
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Old 12-09-2023, 10:19 AM   #5 (permalink)
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The railroads don't own the railcars, except indirectly, just like containers. Unless there's a federal mandate for uniformity solar on rooftops aint gonna happen. Reefer's maybe if you point out significant cost savings over the install costs
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Old 12-09-2023, 03:45 PM   #6 (permalink)
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Quote:
Originally Posted by Piotrsko View Post
The railroads don't own the railcars, except indirectly, just like containers. Unless there's a federal mandate for uniformity solar on rooftops aint gonna happen. Reefer's maybe if you point out significant cost savings over the install costs
Or... Railroads start charging proportionally to the cost of hauling a specific car.
It would take into account the weight of the car + cargo, its rolling resistance, possibly some measure of aero drag. Though I doubt the latter.

This scheme would favor lighter cars, with better serviced wheels and bearings.

Additional incentives for PV on the roof, to reduce the load on the engine.
Or with its own powered axles and batteries, regen and assist controlled from the loco.
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Old 12-09-2023, 06:47 PM   #7 (permalink)
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https://66.media.tumblr.com/cd270042...gmuo1_1280.jpg

Extra points if it looks like it's coming at you straight out of Clownworld. Like the original Talgo.

And with magnetic wheel bearings with tetrataenite.

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