EMD SD50 series official thread (covers all variations)

Discussion of Electro-Motive locomotive products and technology, past and present. Official web site can be found here: http://www.emdiesels.com/.

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Re: EMD SD50 series official thread (covers all variations)

Postby Engineer Spike » Wed May 28, 2014 9:22 pm

OK that was a bad example, but Santa Fe seemed to be pleased with the FP45.
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Re: EMD SD50 series official thread (covers all variations)

Postby Allen Hazen » Wed May 28, 2014 10:47 pm

Engineer Spike--
Re: "but Santa Fe seemed to be pleased with the FP45"

Then again, the Santa Fe was one of the railroads that DIDN'T impose a speed restriction on Amtrak's SDP40F units after their derailments. I think the Santa Fe, at least on their main line, had SUPER-good track: maybe they felt that because of this they could tolerate locomotives that other railroads thought might damage either themselves or the track if operated at high speeds. (I'm guessing, though.)
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Re: EMD SD50 series official thread (covers all variations)

Postby Engineer Spike » Wed Apr 01, 2015 9:38 pm

Alan, there have been other 6 axle passenger units which have been successful, such as EL/NJT U34, and the P30CH. Between my example of the FP45, and SDP40F, it still begs a few questions. One would be the wheelbase of the Flexicoil, vs. HT-C truck. Was the hollow bolster an issue? How about the above board water tanks? One theory was that sloshing water made them unstable.

I forgot to mention the SDP35, 40, and 45. I haven't heard of Seaboard, Southern Pacific, Union Pacific, nor GN/BN having any issue with them.
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