A Class question

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----- Original Message ----- 
From: <nw-mailing-list at nwhs.org>
To: "N&W HS" <mailing-list at nwhs.org>
Sent: Friday, September 15, 2006 12:02 PM
Subject: A Class question



>I just recently read that the last order of A's had roller bearing side 

>rods. Had steam lasted longer would the older A's have been refitted with 

>roller bearing rods?

It's doubtful.

Did the roller bearing roads improve performance and/or reliability?

Reliability and ease of servicing, yes; performance only marginally, because 
of the difference in the frictional resistance of the main and side rods. 
The last five A's (1238-1242) were maintained at Shaffers Crossing where 
they were the preferred As for heavy passenger movements, circus and troop 
trains, etc.  When not in that service they were in the general pool with 
the other As.  A 1239 was used in the 1952 tests on the Scioto Division 
after the F7 diesel was tested there.  See Volume 3 of Louis Newton's RAILS 
REMEMBERED.

>

> Thanks

> --

> Jon Kelley


Ed King


> norfolknwestern1218 at adelphia.net

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