answer this

Discussion in 'Getting Started' started by caboosejumper, May 31, 2003.

  1. caboosejumper

    caboosejumper New Member

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    Which would win a pull off a SD90MAC or the DD40XA Centennial. would the new 90 with more AF and Tractive effort win . Or would the shear weight of the DD win. My guess the DD would start slipping the wheels with the lower AF and the 90 would walk away with it.:confused: :eek:
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  2. interurban

    interurban Active Member

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    NNNAAAAA the DD would drop a ton of sand and pull away with ease:D :D :D ;) :p
  3. Mike R

    Mike R Member

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    Two coupler failures = no winners.
    regards / Mike :) ;)
  4. shaygetz

    shaygetz Active Member

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    I'm sidin' with Mike R...be fun to watch, though.
  5. Greg Elems

    Greg Elems Member

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    Well, that is a tough question. They were designed for different uses. The DDA40X was used in fast freight and was geared for speed. The SD90AC was designed for lugging. The DDA40X has two more axles than the SD90AC. The DD has the old style slip control, aka an engineer. The SD90AC has computer slip control. Who would win, the DD would lose in the end to the SD90AC in the tug of war contest. Who would win the speed race? The DD would win hands down. Having run both in my short railroad career, the DD was more responsive in all ways. It would get up and run away in speed and might even win for a short while in a tug of war. The SD90AC with its AC traction motors, I think would eventually win. Now for a third type of contest, how about a tracker pull? With the right engineer, the DD would hold up pretty darn good.

    Greg Elems
  6. sumpter250

    sumpter250 multiscale modelbuilder

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    I think I'll put my money on the C&O class H8;) ;)