@Big Jim posted:HW,
You are off base again. Read the following: "Compound Articulated Locomotives".Engineers that I have worked noted that it wasn't necessary to "simple" an engine to start a train. This would be especially true when doing light switching.
The "simpling valve" I referred to is NOT in the cab, nor under control by the Engineer (the N&W Y6 Class locomotives had an additional valve arrangement for the Engineer), it is built into the steam input supply to the rear, high pressure cylinders. Thus, when starting, a small amount of live steam is sent to the front, low pressure cylinders in order to provide some "starting steam", since the rear high pressure cylinders have not yet exhausted any steam forward to the low pressure cylinders.
As for the 1309 in the video, it seems to me that in the second video the train is drifting more so than pulling. My question is, why so much smoke?
They are still learning how to properly fire the 1309, especially since there hasn't been a steam locomotive on the WMSR for some 3 or more years. Also not, that the over-fire jet/canisters have not yet been re-installed.
Even when the train stops, there is a significant amount of smoke.
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