SP GS4

[mdtell]

Does anyone know where the steam whistle on the prototype is located?

[jimrice4449]

On top of the boiler (inside the Skyline Casing) lining up w/ the space between the 3d and 4th driver sets.

[cnwfan51]

   Darn got bet to the punch but according to a couple of books that looks about right   Larry

[mdtell]

Thanks guys.

[mdtell]

I notice a few pictures of the GS4 wih the whistle up front on the engineer's side of the smoke stack.  Some of the pictures also show the area inside the skyline casing where the whistle should be with a thin vertical object centered at the back of the well but it appears too thin to be the steamboat whistle.  The well appears to contain two safety valves, one on each side of the well and the verticle object centered to the rear.  What is that vertical object and was the whistle moved from the well to the front and if so when?

[spikejones52002]

I have a question about steam whistles.

Did they have a pressure regulator?  With the different use of the steam pressure to run the engine and equiptment. The tone of the whistle would change.