by Allen Hazen
This is an OLD topic: I asked about it several years ago, but I've been thinking about it again.
Short answer is: the GT-590 was the main generator GE produced for Baldwin locomotives when Westinghouse dropped out of the heavy traction (= locomotive (W'house continued to make electrical gear for transit and commuter cars, and even for about half of the original "Metroliner" cars)) business. Many sources agree (but how many ORIGINAL sources I don't know) that GE built 20 sets of locomotive electrical gear for Baldwin, two of which were used in AS-416 for the Norfolk Southern. The rest were "sold".
QUESTION #1: Sold to who? "Acme Copper Recyclers"? or, more interestingly, back to GE?
What particularly bugs me about this is that the U25C was theoretically equipped (like some 6-axle Alco models: RSD-12, RSD-15, C-628) with the GT-586 generator.
((QUESTION #2: I've long **assumed** that the GT-586 was a modified version of the GT-566 used on the first Alco PA locomotives, much as the GT-581 was a modification ("productionized version") of the GT-564 used on the FA-1. Does anyone here know the details of what the various GE locomotive main generators were like? (Bit of evidence suggesting that the GT-586 was similar to the GT-566: Kirkland's Alco book says the RSD-5 had a GT-566 generator, replaced with the GT-586 in its 251-engined analogue the RSD-12.) ))
***BUT*** there is a Pennsylvania Railroad mechanical department diagram of the U25C available on the WWWeb at
http://prr.railfan.net/diagrams/PRRdiag ... &sz=sm&fr=
which lists the main generator as ... a GT-590!
QUESTION #3: How similar were the GT-586 and GT-590? Were they similar enough that-- assuming GE repurchased the unused GT-590 from Baldwin and still had them lying around a warehouse in Erie ten years later-- they could have been altered fairly cheaply to be functional equivalents of a GT-586? (PRR seems to have had 20 U25C, built in two batches of ten each. Even if 18 of them had recycled ex-Baldwin generators, did two of them get new GT-586?)
((Question #4: How does the GT-567 -- introduced on the Erie-built and applied to other Fairbanks-Morse locomotives after Westinghouse abandoned the locomotive market-- compare to any of the above? Given the similarities between an Erie-built and a PA in specs, I would assume that it was a generator whose output was similar to that of the GT-566 but which was optimized to accept input from a diesel engine of lower rpm.))
Short answer is: the GT-590 was the main generator GE produced for Baldwin locomotives when Westinghouse dropped out of the heavy traction (= locomotive (W'house continued to make electrical gear for transit and commuter cars, and even for about half of the original "Metroliner" cars)) business. Many sources agree (but how many ORIGINAL sources I don't know) that GE built 20 sets of locomotive electrical gear for Baldwin, two of which were used in AS-416 for the Norfolk Southern. The rest were "sold".
QUESTION #1: Sold to who? "Acme Copper Recyclers"? or, more interestingly, back to GE?
What particularly bugs me about this is that the U25C was theoretically equipped (like some 6-axle Alco models: RSD-12, RSD-15, C-628) with the GT-586 generator.
((QUESTION #2: I've long **assumed** that the GT-586 was a modified version of the GT-566 used on the first Alco PA locomotives, much as the GT-581 was a modification ("productionized version") of the GT-564 used on the FA-1. Does anyone here know the details of what the various GE locomotive main generators were like? (Bit of evidence suggesting that the GT-586 was similar to the GT-566: Kirkland's Alco book says the RSD-5 had a GT-566 generator, replaced with the GT-586 in its 251-engined analogue the RSD-12.) ))
***BUT*** there is a Pennsylvania Railroad mechanical department diagram of the U25C available on the WWWeb at
http://prr.railfan.net/diagrams/PRRdiag ... &sz=sm&fr=
which lists the main generator as ... a GT-590!
QUESTION #3: How similar were the GT-586 and GT-590? Were they similar enough that-- assuming GE repurchased the unused GT-590 from Baldwin and still had them lying around a warehouse in Erie ten years later-- they could have been altered fairly cheaply to be functional equivalents of a GT-586? (PRR seems to have had 20 U25C, built in two batches of ten each. Even if 18 of them had recycled ex-Baldwin generators, did two of them get new GT-586?)
((Question #4: How does the GT-567 -- introduced on the Erie-built and applied to other Fairbanks-Morse locomotives after Westinghouse abandoned the locomotive market-- compare to any of the above? Given the similarities between an Erie-built and a PA in specs, I would assume that it was a generator whose output was similar to that of the GT-566 but which was optimized to accept input from a diesel engine of lower rpm.))