Machines that sound awesome!

[uvarvu]

Here are two of my favourites:

BHC SRN4 Hovercraft

BREL HST Class 43

What are yours?

 

[uvarvu]

Phalanx CIWS gun

 

[uvarvu]

Fail - it's not even a Valenta.

Yes it is! The clue is in the title of the video.
The high pitched sound is the Valenta turbocharger and the lower pitched sound is the Marston cooler fan revving up Man I loved those trains before the TOCs started putting MTU engines in them