CHOO CHOO INTENSIFIES

"TwinCharged - Is Now UK Opponaut" (twincharged) 06/30/2014 at 08:58 • Filed to: Japan, Trainlopnik

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JNR Class D51 locomotive preserved at Torokko Saga Station at Arishiyama in Kyoto. Magnificent beast.

Cherry_man1 > TwinCharged - Is Now UK Opponaut 06/30/2014 at 09:01

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I see the D51 and Raise you a Challenger

Where have all the lightweights gone? > Cherry_man1 06/30/2014 at 09:41

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I see your Challenger and raise you a Big Boy

/discussion

camaroboy68ss > Where have all the lightweights gone? 06/30/2014 at 09:44

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you beat me to it

Slave2anMG > Where have all the lightweights gone? 06/30/2014 at 10:04

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Virginian Class AE - 210,000 lbs of tractive effort will drag either of your UP engines off in the other directions, albeit at 15 mph :)

Where have all the lightweights gone? > Slave2anMG 06/30/2014 at 10:10

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That must make quite a noise getting trains over mountains!

Slave2anMG > Where have all the lightweights gone? 06/30/2014 at 11:01

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Built to drag coal trains over the Blue Ridge from Princeton to Victoria, VA. Unlike the Challenger and Big Boy, the AEs were Mallet compounds, using steam first in the rear cylinders then in the front then exhausting. The front cylinders were 48 inches in diameter...the 'second use' steam was at lower pressure so larger cylinders were needed; the AEs took this to extreme. Monster engines...rated for 2000 tons up the 2% grade to Clark's Gap, no mean feat with WW1 technology. Later boiler designs and concepts let boilers produce enough steam to allowe the Challengers and Big Boys to be simple articulateds - simple meaning the steam was used once by a cylinder then to exhaust. The AE's boiler simply could not have kept up steam production for that :)

The Big Boy is prodigious but it's not the 'most powerful' class (meaning more than one) of steam engine built. For tractive effort the AE was tops; for HP the PRR's class of Q2s was tops with just shy of 8000 hp on the dynometer at Altoona PA...from burning coal and boiling water.

And the Big Boy was not the heaviest, either...the C&O had the H-8 2-6-6-6 which were heavier than anything else on the rails. You probably know the UP is going to put the Big Boy #4014 back into steam...that will be spectacular to see.

Where have all the lightweights gone? > Slave2anMG 06/30/2014 at 11:03

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My mom was in California when UP was moving it back to Wyoming for restoration. She's seen the Challenger and other articulated locomotives before, and even she was taken back by how mammoth 4014 is.

Denver Is Stuck In The 90s > TwinCharged - Is Now UK Opponaut 06/30/2014 at 14:50

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Cherry_man1 > Where have all the lightweights gone? 06/30/2014 at 15:22

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I raise with the Triplex

Cherry_man1 > Slave2anMG 06/30/2014 at 15:23

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4014...all I can say is DAUM. Thats it and 611, 844, 3985, and the ATSF Loos that are out there.....Steam is making a comeback. Large steam that is.

Where have all the lightweights gone? > Cherry_man1 06/30/2014 at 15:57

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Nickel Plate 2-8-2 587 (lead locomotive) is also undergoing restoration just outside of Indianapolis. It's unique because it is a USRA Light Mikado locomotive with a larger Berkshire tender.

Cherry_man1 > Where have all the lightweights gone? 06/30/2014 at 21:20

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What about Pere Markquet 1225?

Where have all the lightweights gone? > Cherry_man1 06/30/2014 at 21:34

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It just went back into service after being out for 4 years. That locomotive's problem is there isn't very much track it can run on, and I think they're land-locked by surrounding railroads to offer it mainline steam excursions.

Drakkon- Most Glorious and Upright Person of Genius > Where have all the lightweights gone? 06/30/2014 at 23:25

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We have one in St Louis...

Where have all the lightweights gone? > Drakkon- Most Glorious and Upright Person of Genius 06/30/2014 at 23:27

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I've been in that caba few times before. I am a big fan of that place.