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Re: Retainers
Author: SP5103
Date: 03-22-2012 - 22:21

> Some of the first models of triple valves had a selector cock for
> straight or train air, but those went away very early.

This was actually part of the change between straight air to automatic, allowing a car to be used with either system until eveything was changed over to automatic brakes. I'm not sure straight air was ever real common on freight except in a few isolated areas. I have read where train crews would acutally change back to straight air for heavy grades because they preferred it and weren't as concerned with break-in-two protection or the capability to make an emergency application from the train.

The filler piece used in the Westside system to allow the triple valve or straight air pipe to control the brake cylinder pressure is actually a WABCO catalog item.

It would have been real interesting had the Universal control valve been adopted as the freight standard and 25RL for locos.

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Subject Written By Date/Time (PST)
  Retainers Mike Stimpson 03-22-2012 - 09:14
  Re: Retainers SP5103 03-22-2012 - 10:08
  Re: Retainers ES 03-22-2012 - 11:52
  Re: Retainers SP5103 03-22-2012 - 12:12
  Re: Retainers Severe Duty 03-22-2012 - 12:19
  Re: Retainers SP5103 03-22-2012 - 12:31
  Re: Road Foremen Severe Duty 03-22-2012 - 12:39
  Re: Retainers Dr Zarkoff 03-22-2012 - 15:57
  Re: Retainers Severe Duty 03-22-2012 - 12:14
  Re: Retainers SP5103 03-22-2012 - 12:22
  Re: Retainers <\0/> 03-22-2012 - 13:14
  Re: Retainers Rich Hunn 03-22-2012 - 14:52
  Re: Retainers George Andrews 03-22-2012 - 18:52
  Re: Retainers Graham Buxton 03-22-2012 - 19:29
  Re: Retainers SP5103 03-22-2012 - 19:59
  Re: Retainers Dr Zarkoff 03-22-2012 - 21:42
  Re: Retainers SP5103 03-22-2012 - 22:21
  Re: Retainers Craig Tambo 03-22-2012 - 21:57
  Re: Retainers Shortline Sammie 03-23-2012 - 07:42
  Re: Retainers SP5103 03-23-2012 - 08:23
  Re: Retainers Dr Zarkoff 03-23-2012 - 10:57
  Re: Retainers OPRRMS 03-23-2012 - 13:36
  Re: Retainers J.B.Bane 03-23-2012 - 15:23
  Re: Retainers SP5103 03-23-2012 - 19:28
  Re: Retainers SP5103 03-23-2012 - 18:11


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