by dieselsmoke
Hi there
take a look at this video.
http://www.youtube.com/watch?v=bNR8dYzeCkc
Sorry it's a bit long, and the start of the engine is in the second half of the video.
It's a roots blown 567
when the engine is starting there is a slow deep banging sound, which seems to follow the engine even as it goes into idle speed but it gets softer.
You can hear it after the guy yells "hot start".
It is a very deep bass pounding.
Anyone have any idea what this sound is?
Also, one thing I never understood is why these engines sound so "chopped" and rythmic, even though they have so many cylinders.
Why is it that EMD engines follow that wam wam wam wam rythm when
their cylinders are actually fyring 12/16 times more frequent than this
sound
take a look at this video.
http://www.youtube.com/watch?v=bNR8dYzeCkc
Sorry it's a bit long, and the start of the engine is in the second half of the video.
It's a roots blown 567
when the engine is starting there is a slow deep banging sound, which seems to follow the engine even as it goes into idle speed but it gets softer.
You can hear it after the guy yells "hot start".
It is a very deep bass pounding.
Anyone have any idea what this sound is?
Also, one thing I never understood is why these engines sound so "chopped" and rythmic, even though they have so many cylinders.
Why is it that EMD engines follow that wam wam wam wam rythm when
their cylinders are actually fyring 12/16 times more frequent than this
sound