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Re: tractive effort discussion on T.O.
Author: Robby Peartree
Date: 05-16-2010 - 22:05

Tom,

Do you have any info on the % of boiler pressure factor I have seen it referred to a couple of things in modern writings but it seems to me that it refers to the pressure gradient you find in a locomotive to the cylinders and energy losses due to back pressure? The only time I saw GCR4960 steam chest pressure match its boiler pressure we were stationary. When going around MP 48 at 8 mph we got 180 psi of steam chest at 12 psi of back pressure. While I realize 4960 will not put out the same numbers with its new nozzles but I have not seen it operate with the new exhaust.

Robby Peartree

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Subject Written By Date/Time (PST)
  tractive effort discussion on T.O. Tom Moungovan 05-16-2010 - 19:00
  Re: tractive effort discussion on T.O. Robby Peartree 05-16-2010 - 22:05
  Re: tractive effort discussion on T.O. Tom Moungovan 05-17-2010 - 07:28


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