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Locomotives in mid train

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Posted by Rambo2 on Saturday, March 14, 2020 7:14 PM

Thankyou very much 

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Posted by BaltACD on Saturday, March 14, 2020 7:14 PM

Rambo2
How does it work?

If Jeff Hergert will access this thread he can explain it all in detail - he is a Engineer on the UP and operates DPU trains on many of his trips.

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Posted by tree68 on Saturday, March 14, 2020 7:13 PM

Rambo2

How does it work?

It's all radio control.  The engineer has the choice of tying the head end and the DPU together (electronically) or running them separately, where the lead loco would be run by traditional means, the DPU via the control box.  If they are tied together, whatever the lead loco does, so does the DPU.

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Posted by Rambo2 on Saturday, March 14, 2020 7:04 PM

How does it work?

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Posted by Falcon48 on Saturday, March 14, 2020 6:57 PM

Rambo2

How are locomotives controlled if they are in the middle from the lead loco ?I know airbrakes are connected but what about mu hoses?

 

 

They are not hard wired MUed with the head end.  They are "distributed power units" (DPU) controlled by telemetry from the head end.  The same is usually true with locomotives at the rear.  DPU is pretty commmon in today's railroading. 

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Locomotives in mid train
Posted by Rambo2 on Saturday, March 14, 2020 6:54 PM

How are locomotives controlled if they are in the middle from the lead loco ?I know airbrakes are connected but what about mu hoses?

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