Discussion in 'International Heritage Railways/Tramways' started by athelney, Jul 23, 2013.
Definitely collar work, then.
It should be pointed out that the run took place with Roller Bearing equipped Rolling stock, and one of the big hurdles to overcome in operation was treating the rolling stock with sufficient respect until everything truly warmed up.
Another example is here as UP844 helps rescue a stalled freight.
When asked about "how much", they could hang off the drawbar of 4014, Ed Dickens looked over at a freight yard in Sacremento, and said, all of that!!!
Altitude has very little effect on the power output of a steam locomotive except in poorly designed boilers the mass of air available for combustion could be reduced enough to limit steam production and superheat temperature.
But on the other hand, reduced atmospheric pressure will mean a lower boiling point for water (93 degrees at 6,000 feet). Whether that would completely counter balance the above point I have no idea but in theory it should help.
No it won’t, because the boiler pressure controls the temperature of the water in the boiler.
The best clip to date...
Only when its in a free volume, not when its contained ... like in a boiler.
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