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SW1200 with an unusual feature
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   SW1200 with an unusual feature
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CHESSIEMIKE
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SW1200 with an unusual feature
 
« on: May 1st, 2002, 11:29pm »
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At the Trains forums some one asked about the addition on the hood in front of the cab on this locomotive
http://gelwood.railfan.net/drgw/drgw133ags.jpg
Any ideas?
CHESSIEMIKE  
 


« Last Edit: Sep 27th, 2013, 9:21pm by CHESSIEMIKE » Logged


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sd50
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Re: SW1200 with an unusual feature
 
« Reply #1 on: May 6th, 2002, 12:51am »
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I work with SW1200s and I can't see anything strange about this one. I see a battery box between the steps and cab, a radio antena on the roof, exhaust stack extensions so you don't kill the crew.  If you could be more specific I could provide a better answer.

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CHESSIEMIKE
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Re: SW1200 with an unusual feature
 
« Reply #2 on: May 6th, 2002, 8:13pm »
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Look at the section of the hood where the Dynamic brakes would be if it had them and you will see what I am asking about.  Most all SW1200 that I have seen have the hood taper down to the cab.  If you look you can see this taper outline but there is something on top of it.
Hope this is good enough to get an answer.
CHESSIEMIKE


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sd50
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Re: SW1200 with an unusual feature
 
« Reply #3 on: May 6th, 2002, 10:25pm »
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Yeah I see it. I looked at one of our units and didn't notice this before. That is right above the generator. I don't  see any cooling fans or vents that would indicate dynamics. I would like to see inside the cab and generator compartment on this unit.

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CHESSIEMIKE
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Re: SW1200 with an unusual feature
 
« Reply #4 on: May 7th, 2002, 8:21am »
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Me too!  Ask around, someone knows what its for.
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CHESSIEMIKE
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Re: SW1200 with an unusual feature
 
« Reply #5 on: Dec 14th, 2002, 10:49pm »
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on May 1st, 2002, 11:29pm, CHESSIEMIKE wrote:       (Click here for original message)
At the Trains forums some one asked about the addition on the hood in front of the cab on this locomotive
http://gelwood.railfan.net/other/drgw/drgw133ags.jpg
Any ideas?
CHESSIEMIKE

I find it hard to believe, , that someone has not been able to let us know what is under the addition.
CHESSIEMIKE


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pontiac59
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Re: SW1200 with an unusual feature
 
« Reply #6 on: Dec 15th, 2002, 2:41am »
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All the engines in this series shown here have this addition (131-134).  It's likely for the addition of dynamic braking, as on Lehigh Valley SW8M's and Reading MP15's.  The link came up as bad, but here is a correct one:
 
http://gelwood.railfan.net/drgw/drgw131abn.jpg
 
The newest photo shows one in 1998 so these units likely still exist although UP has probably disposed of them by this point - X2200S or Diesel Era may shed some light on this.


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Chesapeake
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Re: SW1200 with an unusual feature
 
« Reply #7 on: Dec 15th, 2002, 4:29am »
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Might be a electrical Cabnet update, most dynamic equiped switchers utilized large boxes above that covering the 2 center cab windows facing the long hood.

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Matthew Mitchin
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CHESSIEMIKE
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Re: SW1200 with an unusual feature
 
« Reply #8 on: Dec 15th, 2002, 7:01am »
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on Dec 15th, 2002, 4:29am, Chessie_SD50_8563 wrote:       (Click here for original message)
Might be a electrical Cabnet update, most dynamic equiped switchers utilized large boxes above that covering the 2 center cab windows facing the long hood.

That was my first thought when the question was asked.  However, the two styles of DB on switchers that I can find are different from this.  Also I don't see any fan or vents.  Thanks for looking.  
CHESSIEMIKE


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NJ Railfan
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Re: SW1200 with an unusual feature
 
« Reply #9 on: Dec 15th, 2002, 1:17pm »
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Here's another view:
 

 


« Last Edit: Dec 15th, 2002, 1:20pm by NJ Railfan » Logged

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CHESSIEMIKE
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Re: SW1200 with an unusual feature
 
« Reply #10 on: Dec 15th, 2002, 3:52pm »
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Sorry, did not notice my link was dead.  Thanks NJ railfan for the help.
I also think an eastern road had this on some of their's, don't remember the one though.  
CHESSIEMIKE


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cn2220
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Re: SW1200 with an unusual feature
  302.jpg - 17238 Bytes
« Reply #11 on: Jan 5th, 2003, 6:05pm »
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Here's a Canadian Forest Products SW1200 with Dynamic Brakes. This is unit 302, a Cat-repowered SW1200 with DB. Gordon Hall photo.
 
Canadian Forest Products owns 4 of these units. 301-304. Unit 304 was bought second hand from the Coos Bay Lumber Co. 301-303 were purchased new from GM. Number 303 has been delcared surplus and could be up for sale soon.


http://Forums.Railfan.net/Images/DieselTypes/302.jpg
Click Image to Resize

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Tyler

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EMD_TRAIN_FAN
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Re: SW1200 with an unusual feature
 
« Reply #12 on: Jan 14th, 2003, 8:36am »
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It took me a while to get my hands on  it, but I have a copy of the EMD build order for the D&RGW 130-139.  
 
Aside from unseen operational extras, this order shows that they were built with an oversize 930 gallon fuel tank equipped with EMD direct reading gauges and Air Maze panel type oil bath engine air intake filters.  Could these filters have a special housing requirement?  
 
Other extras include things like metal awnings over the cab side windows and wind deflectors.  There doesn't seem to be anything else that different in their "as built" configuration.


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CHESSIEMIKE
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Re: SW1200 with an unusual feature
 
« Reply #13 on: Sep 27th, 2013, 9:30pm »
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Jumping around at this site: Fallen Flags and Other Railroad Photos shows this feature changed during the D&RGW days.
Look at the different photos for #130-#139 and see.
CHESSIEMIKE


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