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| Re: GG1 Sadly going back to Nature (1526778) | |||
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Re: GG1 Sadly going back to Nature |
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Posted by Bill West on Sat Oct 12 20:52:22 2019, in response to Re: GG1 Sadly going back to Nature, posted by kp5308 on Sat Oct 12 17:52:26 2019. According to Fred Westing the two pilot pairs were built as 3998 and 3999 but renumbered to 3996-3997 and 3998-3999. The production units were given individual numbers as built but they then received the locally convenient 2 digit electric zone number per pair even though the number conflicted with steamers. Westinghouse demonstrator no. 10003 was a single unit and the DD1 halves were interchangeable so that may have set the pace. Very few 2 unit locomotives of any type existed at this time so the best numbering method would not have been well learned. 3936 & 3937, serial 2244-2 and 2244-1 were #36 in the NYP electric zone.As two halves of a locomotive they were nearly identical. The only differences I've found are that the power circuit runs in series between the motor in each half during starting and then runs separately when the speed reaches parallel notch. If one half is cutout the other can still run however, it will just accelerate differently. At the shop you could exchange halves fairly quickly, after the obvious drawbar, hoses and cables there a few power jumpers to move on the contactors and some wires to swap in the motor cutout box because they determine whose motor is at the line end and whose is at the ground end in series mode. I don't recollect the halves ever being exchanged however. Even the brakes were not MU'd, each half had its own distributing valve and the independent brake handle was only connected to its own half. The main reservoir hose did run between halves and could MU to the next loco. Bill |
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