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September 15, 2019, 10:33:38 AM
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Author Topic: Random steam pics thread  (Read 39047 times)
bbmiroku

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« Reply #1020 on: July 02, 2019, 08:34:53 PM »

reply #1008 (page 68)... is that one of those electric-steam engines? Tongue
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RAM

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« Reply #1021 on: July 03, 2019, 04:39:45 PM »

no.  1008 is just a steam locomotive under wire.  In 1007, it looks like 4 people working and 20 people watching.
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Trainman203

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« Reply #1022 on: July 08, 2019, 10:44:21 AM »

In 1007, nearly everyone (“not ‘working‘ “)  is a suit.  This might be some kind of experimental or test thing in progress that various superintendents and maybe vendor reps  are checking on.

The engine is Canadian as evidenced by the oval perforated step on the front end of the running board.
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Modeling the New Iberia and Northern 1945
WoundedBear
A Derailed Drag Racer


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« Reply #1023 on: August 04, 2019, 03:33:40 PM »

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Trainman203

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« Reply #1024 on: August 05, 2019, 08:37:31 AM »

In 1024, the cylinders are different sizes.  This means a “compound “ locomotive, using steam twice, once in the the small cylinder and then, spent, under lower pressure to the large one.  This idea proved to be maintenance heavy and was largely out of favor in North America by 1910 and the time that mikados were gaining popularity.
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Modeling the New Iberia and Northern 1945
ebtnut

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« Reply #1025 on: August 05, 2019, 10:58:48 AM »

I'm pretty sure that what is in the pic is a cylinder and valve casting, not two cylinders.  Casting technology had not yet gotten to where and entire cylinder block could be cast as one piece.  So this is one half of a cylinder/valve set.  By the 1930's/early '40's casting technology had advanced to the point where entire engine beds - frames and cylinders, could be cast as one piece.  \

There were a few cross-compound locos built around the turn of the 20th century.  They had a high-pressure cylinder on one side and a low pressure cylinder on the other.  There was also the Vauclain compound, designed by Sam Vauclain of Baldwin.  There, the high pressure, low pressure and valve were all cast together, which gave a distinctive appearance to the cylinder assembly.   
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Trainman203

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« Reply #1026 on: August 05, 2019, 01:40:56 PM »

Yes you are correct.  The casting is mounted sideways, that is what threw me
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Modeling the New Iberia and Northern 1945
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