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Reading Topic #3938
I was wondering if there are any physical differences (appearance) between the GP38, GP38-2 and GP38AC and between the GP40, GP40-2? Or are the differences only related to the engines and traction motors? Also, has someone made an eng file for a GP38AC or does a GP38 eng file work as far as MSTS is concerned at this stage?
Thanks for your time and good day!Michael
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The GP38 and GP38-2 are mostly the same in major spotting features as are the GP40's. Not sure about the AC's though. Quite often any body work differences are railroad specific like locations for bells and lights. US built and Canadian built GP38's are different in the step wells where the Canadian locos have a vertical step well and the US built are stair step style. You'll also see differences within the same railroad for the same locomotive type. Pictures of a particular prototype are the only real way to be certain.Stew
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The GP38 and the GP38AC are exactly the same for spotting, the only difference is that the AC unit had AR10 altenator in place of the D32 DC generator. The easiest way to spot a -2 is the dampening strut on oppisite journal boxes and each truck. Also the battery boxes are bolt on verses hinged, water sight glass on the loong hood near the rear on the engineers side and the roof on the top of the cab extends out a couple of inches,Kevin Arceneaux
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Not necessarily so.....each locomotive may have the same internal features, but externally, there were many options.The Blomberg-B (no dampening strut on axle) Blomberg-M dampening strut, were an option, depending on railroads preferencesAs well GP38's started with oil-bath filters, these later changed to paper air filters. In that case there are 2 common styles one which forms a basic box infront of the dynamic blister (or where it would be). While others had chose another option which used an angled air filter box at the top.As for the step option, the Canadians were not the only ones to order the vertical step wells. Southern originally had them as well on a few orders of GP38'sJon
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LAST EDITED ON Jun-30-02 AT 00:06 AM (EDT)
GP40's have three radiator fans on the back, where GP38's have only two. The "Dash 2" features are the same.EDIT: Of course, you might want to enlighten UP's patch department about the differences between an SD40T-2 and a GP40-2.. I saw a pic(unaltered) on trainorders.com once... It was a Cotton Belt GP40-2 masquerading (patched) as a UP SD40T-2......................Had to take a moment to laugh my head off.... Oh well...
Bradley Linda
Waco, Texas
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WOW! Thanks for the replies everyone!!! Prior to MSTS I never really gave it that much thought but now that I am trying to do some reskins, it is really helpful to know these things. And now when I see a train pass here at school on the Willamette and Pacific, maybe I can figure out what kind of GP's they are. Thanks again and good day!Michael
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