by Ericmopar » Fri Feb 07, 2014 1:47 am
Hmmmmm... Well....
Just one problem with some of those videos.
1. Engines sound different when under load than when stopped and in neutral. When a loco is in run 8 under load, like climbing a pass, there is lots of current being drawn from the alternator/generator assembly, which results in the assembly being much harder to turn at the specified RPM, per notch setting.
The engine gets more fuel delivered by whatever governor assembly and gets throatier. As the load on the engine increases, the exhaust gets hotter and the turbo spools up accordingly as well.
I've never really thought about it before, but I wonder if that's why some of the sounds are off. Because the recordings weren't done under load. It would explain why the GE engines sound kinda right, but no bark in the exhaust note.
It would be like trying to get a recording for a sim of NASCAR, with the car in neutral.
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