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| First Siemens Charger locomotives (1399761) | |
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| (1399767) | |
Re: First Siemens Charger locomotives |
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Posted by chud1 on Thu Jun 23 09:44:56 2016, in response to First Siemens Charger locomotives, posted by Dave on Thu Jun 23 07:06:00 2016. 5 drooling stars out of 5 drooling stars for this.chud1. :)..... |
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Re: First Siemens Charger locomotives |
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Posted by Bill Newkirk on Thu Jun 23 10:10:59 2016, in response to Re: First Siemens Charger locomotives, posted by chud1 on Thu Jun 23 09:44:56 2016. 
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Re: First Siemens Charger locomotives |
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Posted by ChicagoMotorman on Thu Jun 23 10:24:57 2016, in response to First Siemens Charger locomotives, posted by Dave on Thu Jun 23 07:06:00 2016. nice |
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Re: First Siemens Charger locomotives |
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Posted by Olog-hai on Thu Jun 23 13:30:16 2016, in response to First Siemens Charger locomotives, posted by Dave on Thu Jun 23 07:06:00 2016. The 95-litre 16 cylinder engine is rated at 3.28MWIn American, that's 326 cubic inches per cylinder (compare EMD's 567/645/710), and 4,400 horsepower. Quad turbo is a bit much, though. More moving parts means more to go wrong. |
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Re: First Siemens Charger locomotives |
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Posted by Steamdriven on Thu Jun 23 14:59:38 2016, in response to Re: First Siemens Charger locomotives, posted by Olog-hai on Thu Jun 23 13:30:16 2016. How long would it take for 4400 hp to get a modest sized train up to 125mph? Sounds underpowered to actually reach that speed, unless they intend to double up on locomotives. It also doesn't look very aerodynamic, for that speed I'd think compound curves at the front are required. The original modern diesel locomotive (high, single-headlight nose, 2 smallish windows) has better aero, and also a more coherent design. |
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Re: First Siemens Charger locomotives |
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Posted by Lou from Brooklyn on Thu Jun 23 15:32:33 2016, in response to Re: First Siemens Charger locomotives, posted by Steamdriven on Thu Jun 23 14:59:38 2016. >>How long would it take for 4400 hp to get a modest sized train up to 125mph?Well they will soon find out OP said two were in Colorado at the test track. |
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| (1399811) | |
Re: First Siemens Charger locomotives |
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Posted by chud1 on Thu Jun 23 15:55:44 2016, in response to Re: First Siemens Charger locomotives, posted by Bill Newkirk on Thu Jun 23 10:10:59 2016. thats right, i have a mop and bucket always handy.LOL. chud1. :)..... |
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Re: First Siemens Charger locomotives |
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Posted by Olog-hai on Thu Jun 23 21:29:05 2016, in response to Re: First Siemens Charger locomotives, posted by Steamdriven on Thu Jun 23 14:59:38 2016. How many cars is a "modest-sized train", and what empty weight?The Alco DL-109 and earlier E-units were geared for 120 mph; three-unit combos had more than 4400 horses, and with under-car generators on older rolling stock, the locomotives didn't have to sacrifice any horses for HEP. Also, the AEM-7s ran at 125 mph for many years and are less aerodynamic than these Chargers. |
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| (1399848) | |
Re: First Siemens Charger locomotives |
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Posted by Steamdriven on Thu Jun 23 23:04:17 2016, in response to Re: First Siemens Charger locomotives, posted by Olog-hai on Thu Jun 23 21:29:05 2016. "How many cars is a "modest-sized train", and what empty weight?"Dunno, I've never tried pulling one, and it won't fit on my scale ;-) Let's take an average passenger train of the type that engine will most commonly be used to haul. As I understand it, long distance passenger trains are few (and huge money losers), so let's consider regionals and intercities. With 4000 hp, you can push a train-sized barn door through the air at 125 mph with thousands left over, but it's an ugly way to get the job done. Over the life of the loco, it also wastes a fair amount of fuel, considering that without a front-mounted radiator and thus no draggy openings a train's nose can be a near-perfect aerodynamic shape. |
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Re: First Siemens Charger locomotives |
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Posted by The silence on Thu Jun 23 23:21:49 2016, in response to Re: First Siemens Charger locomotives, posted by Steamdriven on Thu Jun 23 14:59:38 2016. Florida East Cost/All aboard Florida/Brightline/"whatever other name they can think of" plan to run them in train sets of two locomotives and four to five cars, so those speeds may be reasonable in that configuration. |
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Re: First Siemens Charger locomotives |
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Posted by Olog-hai on Fri Jun 24 01:58:12 2016, in response to Re: First Siemens Charger locomotives, posted by The silence on Thu Jun 23 23:21:49 2016. That's far more power than on a British InterCity 125. |
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Re: First Siemens Charger locomotives |
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Posted by merrick1 on Fri Jun 24 07:37:55 2016, in response to Re: First Siemens Charger locomotives, posted by Olog-hai on Thu Jun 23 21:29:05 2016. The under-car generators were powered by the car wheels so they increased drag on the locomotive. There's no free lunch.Of course car heating was provided by steam which did not draw any mechanical or electrical power from the locomotive. |
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Re: First Siemens Charger locomotives |
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Posted by Olog-hai on Fri Jun 24 08:51:15 2016, in response to Re: First Siemens Charger locomotives, posted by merrick1 on Fri Jun 24 07:37:55 2016. The under-car generators were powered by the car wheels so they increased drag on the locomotive. There's no free lunchThat's related to fuel consumption rather than speed capability. Then-new technology still demonstrated what it was able to do. Of course car heating was provided by steam which did not draw any mechanical or electrical power from the locomotive Yes, but it still consumed fuel to make the steam and required its own boiler. It also preserved continuity from steam power from steam locos. |
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Re: First Siemens Charger locomotives |
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Posted by pragmatist on Fri Jun 24 11:26:14 2016, in response to Re: First Siemens Charger locomotives, posted by Olog-hai on Fri Jun 24 08:51:15 2016. How far apart are the stations? Acceleration may be more important than top speed. What is the running speed of the track, is 125 even relevant? The 125 mph issue was explored when the award was protested by MPI after it was made for the Midwest-California consortium. Nothing came of that. |
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Re: First Siemens Charger locomotives |
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Posted by pragmatist on Fri Jun 24 13:56:46 2016, in response to Re: First Siemens Charger locomotives, posted by pragmatist on Fri Jun 24 11:26:14 2016. oops, I believe the protest came from emd |
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Re: First Siemens Charger locomotives |
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Posted by The Silence on Fri Jun 24 16:20:14 2016, in response to Re: First Siemens Charger locomotives, posted by Olog-hai on Fri Jun 24 01:58:12 2016. the Charger is just a better performer all around that the class 43 power cars the 125 uses. |
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Re: First Siemens Charger locomotives |
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Posted by Steamdriven on Fri Jun 24 17:24:15 2016, in response to Re: First Siemens Charger locomotives, posted by The silence on Thu Jun 23 23:21:49 2016. That's a lotta locomotives for a a count-on-one-hand train. Then again, if one quits, the px won't be stuck for hours mid-nowhere. |
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Re: First Siemens Charger locomotives |
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Posted by Olog-hai on Fri Jun 24 17:34:24 2016, in response to Re: First Siemens Charger locomotives, posted by The Silence on Fri Jun 24 16:20:14 2016. Maybe. An actual top speed of 143 mph is still not bad for 1970s diesel technology. |
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