Big Boy Tender

The tenders of Union Pacific "Big Boy" locomotives had 7 axles. Seven axles were need to provide support for the 28 tons of coal and 24,000 gallons of water the tender could contain to feed the Big Boy.
  rear of BigBoy tender  
  Click here to see the shots of this tender at Steamtown NHS in 2006  

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©2006 John Simakauskas Railroad Photo Albums