SD45 cab sound question

[katyusha454]

The high hood SD45s have this awful screaming noise in the cab that starts when you get up to around 10 miles per hour, and it makes them miserable to drive. I don't own the other SD45 packs but the videos I've seen seem to show that this sound is also present in the UP unit but not the SP one. Does anyone know why this sound is present in all the other units but not the SP one? And can someone who owns the SP pack confirm that the cab sounds are indeed different from the others and the screaming sound is not present?

[ErikGorbiHamilton]

The high hood SD45s have this awful screaming noise in the cab that starts when you get up to around 10 miles per hour, and it makes them miserable to drive. I don't own the other SD45 packs but the videos I've seen seem to show that this sound is also present in the UP unit but not the SP one. Does anyone know why this sound is present in all the other units but not the SP one? And can someone who owns the SP pack confirm that the cab sounds are indeed different from the others and the screaming sound is not present?

For some odd reason the sounds on the UP SD45 are much louder then the other packs. The screaming MIGHT be the traction motor sounds, but I am not certain.

[Brickrail782]

The high hood SD45s have this awful screaming noise in the cab that starts when you get up to around 10 miles per hour, and it makes them miserable to drive. I don't own the other SD45 packs but the videos I've seen seem to show that this sound is also present in the UP unit but not the SP one. Does anyone know why this sound is present in all the other units but not the SP one? And can someone who owns the SP pack confirm that the cab sounds are indeed different from the others and the screaming sound is not present?

For some odd reason the sounds on the UP SD45 are much louder then the other packs. The screaming MIGHT be the traction motor sounds, but I am not certain.

You're correct, the noise is the traction motors. The same sound is prevalent on the UP SD45 too.

[GenesisFan99]

The real SD45s were very noisy as well. I couldn't imagine having to listen to the roar of a 20-645E3 and those traction motors for hours on end.