Very interesting EMD?
Posted: Mon Nov 07, 2011 3:23 pm
Big footed SD45 w/ D-D trucks:
Even the AC4400CW gets the treatment:
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Very interesting EMD?
https://railworksamerica.com/forum/viewtopic.php?f=24&t=3929
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Posted: Mon Nov 07, 2011 3:23 pmRe: Very interesting EMD?
Posted: Mon Nov 07, 2011 3:32 pmEx. ATSF SD45-2. In service probably in Brazil. Since Brazil has a lot of narrow gauge, they mod their locomotives with BB+BB trucks.
Big footed SD45 w/ D-D trucks:
Even the AC4400CW gets the treatment:
Big footed SD45 w/ D-D trucks:
Even the AC4400CW gets the treatment:
Re: Very interesting EMD?
Posted: Mon Nov 07, 2011 4:19 pmDual gauge track to boot. They also do the BB + BB to reduce axle loadings on the track and bridges. I will bet that gives one rough ride.
Re: Very interesting EMD?
Posted: Mon Nov 07, 2011 5:15 pmHmm American locomotives with American looking freight cars. Would like to see a retired one of these get shipped to a shortline/museum in the US.
Re: Very interesting EMD?
Posted: Mon Nov 07, 2011 5:23 pmMakes me curious if we are missing out on what is inside a Brazilian railroad museum.
Re: Very interesting EMD?
Posted: Mon Nov 07, 2011 5:52 pmlooking closer at the ES44, those trucks are narrowguage trucks! wow, just wow
Re: Very interesting EMD?
Posted: Sat Feb 11, 2012 6:03 pmForgive me if this is thread is too old to dig up.
All of the units pictured should be narrow gauge. From what I've read elsewhere, the reason for the BB-BB configuration is because the narrow gauge traction motors in a C-C setup cannot fully utilize the full horsepower of the unit. Basically, if you just narrowed the gauge of the original trucks with narrow gauge axles and traction motors, the units would have to be de-rated in order to not burn themselves up. The extra two traction motors better balance the horsepower across all motors. I forget where I read this or I would have included the source. It is likely that dispersing the load across two more axles is a contributing factor as well. Either way, these are pretty wild modifications!
Tyler
All of the units pictured should be narrow gauge. From what I've read elsewhere, the reason for the BB-BB configuration is because the narrow gauge traction motors in a C-C setup cannot fully utilize the full horsepower of the unit. Basically, if you just narrowed the gauge of the original trucks with narrow gauge axles and traction motors, the units would have to be de-rated in order to not burn themselves up. The extra two traction motors better balance the horsepower across all motors. I forget where I read this or I would have included the source. It is likely that dispersing the load across two more axles is a contributing factor as well. Either way, these are pretty wild modifications!
Tyler