Thread: Big Boy Runs
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Old 7th May 2019, 00:26
  #18 (permalink)  
Kiwithrottlejockey
 
Join Date: Nov 2010
Location: Masterton, NZ
Age: 65
Posts: 179
Quote: " But about that diesel hanging off the back .......? "

It's called "Contingency assistance".


It's also about providing dynamic braking on the train. Something steam locomotives don't have.
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