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Reply to "Would like to upgrade Atlas SD35 to cruise--need clarification on ERR upgrade needed"

Tom Densel posted:

I finally had a chance to open up my SD35 and refresh my memory.  The board width is not the problem.  It is the orientation of the connectors that caused my problems.

Here is the OP's photo of the original DCDR.  Notice how the connector at the top of the board is orientated horizontally.  Also note the location of the screw hole in the frame of the locomotive.

DSC04173

This is my upgraded SD35.  Note how the connector is oriented vertically and its position directly over the screw hole.  This is where I ran into trouble.  The connector interferes with the mounting post on the shell of the locomotive.  If I try to bypass the connector by moving the shell forward or backward there is interference in other areas.  I found it easiest to slide the shell forward and pry the sides out slightly.  It still takes plenty of patience and a few choice words, but it will eventually go down.  I don't know if the connector can be eliminated and the serial data wire soldered directly to the pin as that is the only wire running to this connector.  What do you think, John?  That would definitely free things up.

DSC04176

You can see how the paint is rubbed off the mounting post where I had to force it past the connector.

Other than this issue, it was a pretty straight forward conversion.  Definitely well worth the cost and effort.

Tom

Tom—thanks for opening back up your SD35 and giving me a heads up on the potential of the 10 pin connector on the CC-M interfering with the mounting post on the engine shell.  

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