Altamont Press Discussion Board :: Discussion :: Re: Pacific Electric relief map

Re: Pacific Electric relief map

Author: Graham Buxton

Date: 04-20-2017 - 05:30

Nussel Snouts Wrote:
-------------------------------------------------------
> Continuous crossing at South Gate California

Thanks for posting that 'continuous crossing' photo with the rotating inserts. I don't believe that I have ever seen such a system before, and didn't realize that they ever existed.

An unusual continuous diamond style that is a relatively recent style is the "Flange Bearing Diamond" that has a high speed direction, with the other direction being a low speed. The high speed is continuous, but the low speed has a gap in the normal bearing surface where the wheel flange rides on the top surface of the continuous rail of the high speed direction. An example linked from RRPictureArchives.net:
[www.rrpicturearchives.net]

http://s3.amazonaws.com/rrpa_photos/28274/080416015.jpg

080416015 Illustration of "Flange Bearing Diamond" in action at BNSF Park Junction, Saint Paul MN
[www.rrpicturearchives.net]

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Subject	Written By	Date/Time (PST)
Pacific Electric relief map	Nussel Snouts	04-20-2017 - 00:28
Re: Pacific Electric relief map	Graham Buxton	04-20-2017 - 05:30
Re: Pacific Electric relief map	Nussel Snouts	04-20-2017 - 14:07
Re: Pacific Electric relief map	Joe Magruder	04-20-2017 - 06:51
Re: Pacific Electric relief map	Berg	04-20-2017 - 07:51
Re: Pacific Electric relief map	Berg	04-20-2017 - 08:00
Re: Pacific Electric relief map	New Felton	04-21-2017 - 13:33
Re: Pacific Electric relief map	mook	04-21-2017 - 17:27

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Graham Buxton Wrote:
-------------------------------------------------------
> Nussel Snouts Wrote:
> --------------------------------------------------
> -----
> > Continuous crossing at South Gate California
> 
> Thanks for posting that 'continuous crossing'
> photo with the rotating inserts. I don't believe
> that I have ever seen such a system before, and
> didn't realize that they ever existed.
> 
> 
> An unusual continuous diamond style that is a
> relatively recent style is the "Flange Bearing
> Diamond" that has a high speed direction, with the
> other direction being a low speed. The high speed
> is continuous, but the low speed has a gap in the
> normal bearing surface where the wheel flange
> rides on the  top surface of the continuous rail
> of the high speed direction. An example linked
> from RRPictureArchives.net: 
> http://www.rrpicturearchives.net/showPicture.aspx?
> id=1127531
>  
> http://s3.amazonaws.com/rrpa_photos/28274/08041601
> 5.jpg
> 080416015 Illustration of "Flange Bearing Diamond"
> in action at BNSF Park Junction, Saint Paul MN
> http://www.rrpicturearchives.net/showPicture.aspx?
> id=1127531

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