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SD35 Radiator Section Door Arrangement vs. Atlas/ROCO SD35

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  • Member since
    August 2022
  • 3 posts
SD35 Radiator Section Door Arrangement vs. Atlas/ROCO SD35
Posted by MWheeler74 on Monday, February 27, 2023 7:48 PM

Hi All,

I am planning a build of one of the EMD SD40x test bed units, which became Union Pacific 3046.  I have an Atlas/Roco Yellowbox SD35.  My issue is with the door arrangement in the radiator section.

As far as I can tell, the doors on all prototype photos of SD35s seem to show 6 doors arranged in a 1-2-2-1 pattern.  This is the same for the last 2 SD40x units, UP 3046 and 3047.

http://www.rrpicturearchives.net/showPicture.aspx?id=5399210

However, my Atlas SD35 has 7 doors in the radiator section, in a 1-2-2-2 pattern (from front to rear).  Is this a glitch?  A quirk of the old Atlas/Roco tooling?  Is there any prototype reference to this?

https://tycotrain.tripod.com/atlashoscaletrainscollectorsresource/id4.html

I've accepted that I am going to rearrange the doors on my model using Cannon parts to match UP 3046.  I am just more curious about the link between prototype and model.  Any guidance is appreciated.

Mike

  • Member since
    May 2010
  • From: SE. WI.
  • 8,253 posts
Posted by mbinsewi on Monday, March 13, 2023 2:28 PM

Not sure I understand your question, but the SD40x was built on an SD35 frame.  Maybe the door arrangement was changed at that time, for the experiment, while the stock SD35 maintained the current hood/door arangement.  ?

The Atlas model would be the stock SD35.

Mike.

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