Frisco Hancock 3 Chime Whistle Pressure?

Discussion in '1500 Class Mountains' started by Frisco152251, Oct 23, 2016.

  1. Frisco152251

    Frisco152251 Member

    Out of curiosity, would anyone happen to know what the steam pressure going into the whistle was on a 1500 locomotive?

  2. Steamnut

    Steamnut cinder sniffer

    I believe 1500s ran 210psi in the boiler.
  3. 3-cylinder-12

    3-cylinder-12 Member

    Figuring in pressure drop while running, 190-205 wouldn't be out of the question. Rarely would crews fire right on the mark of popping, ussually the fireman would try to keep it 5-10 psi under the pops.

    The tone of the whistle wouldn't hardly be affected by the normal variations in pressure while the engine was running.
  4. Frisco152251

    Frisco152251 Member

    Would you or anyone also happen to know the Gallons Per Minute (GPM) rating of steam required by the whistle under operating conditions?


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