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Reply to "Big Boy #4014 moves under power for the first time in over 50 years • The UP is bringing out the 4014, see schedule 🚂"

Dominic Mazoch posted:

The DDA40X seems to be a very loud locomotive.

Yes, since it was the highest HP locomotive with high capacity 16-645F series engines, WITHOUT any exhaust silencer on the turbo exhaust. The "Dash 2" series of units, which came out in 1972, all had exhaust silencers.

But to me it would be nice to have it around for 2019.  They were nicknamed the CENTENNIALS?

Yes, being delivered in time for the 100th anniversary of the Gold Spike event (May 10, 1969), the UP numbered them in the 6900 series, and referred to as "Centennials".

 

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