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(...) Not disputing that. Just not sure that a 30K RPM graphite in an evacuated can with magnetic bearings is, at this moment, "perfectly" practical. Not just yet. But the notion of powering up at stops (think regular electric bus poles that instead (...) (23 years ago, 1-Aug-01, to lugnet.trains)
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| | Re: what is the use of a caboose?
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(...) On similar lines London Underground has a proposal for (and is testing) a scheme using flywheels mounted trackside. The principle is that current generated by braking trains (back EMF?) drive the flywheels and accelerating trains use the (...) (23 years ago, 2-Aug-01, to lugnet.trains)
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| | Flywheels in LU (was Re: what is the use of a caboose?
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(...) Why flywheels? Why not just put the power back into the mains? (regenerative braking) US electric locos do this, I believe... In this case the flywheels seem to add a layer of complexity (and a source of loss) that isn't needed unless I am (...) (23 years ago, 2-Aug-01, to lugnet.trains)
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| | Re: Flywheels in LU (was Re: what is the use of a caboose?
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"Larry Pieniazek" <lpieniazek@mercator.com> wrote in message news:GHGAxL.FyL@lugnet.com... (...) (regenerative (...) It's very common in the rapid transit / metro industry. I'm not aware of any full-scale trains (ie, any systems other than rt or (...) (23 years ago, 3-Aug-01, to lugnet.trains)
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| | Re: Flywheels in LU (was Re: what is the use of a caboose?
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(...) I thought they were using flywheels in diesels, but I couldn't find too much. Most of the braking power though is supplied not by charging a battery, but by dissipating the energy through resistors (some portion of those cooling fans are (...) (23 years ago, 3-Aug-01, to lugnet.trains)
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| | Re: Flywheels in LU (was Re: what is the use of a caboose?
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(...) I hadn't heard of ANYONE doing this for any serious energy storage (most reciprocating engines use flywheels to smooth out the motion generated, of course, but this would be different). Do you have any info on where you heard this? (...) Some (...) (23 years ago, 3-Aug-01, to lugnet.trains)
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| | Re: Flywheels in LU (was Re: what is the use of a caboose?
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(...) other fallen flag railroads' reference site: (URL) halfway down this page, you find operator manuals for the S-1, S-2, RS-1,C420, E-8, F-7, GP-7, GP-35 and several U-series locomotives. Neat stuff. -chris (23 years ago, 3-Aug-01, to lugnet.trains)
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