Roller Bearings and the Y6-b

NW Mailing List nw-mailing-list at
Wed Oct 9 18:17:38 EDT 2019


      If you’re a Trainorders member (I am not)you can go back and read Wes Camp’s writing on this subject recently . Very interesting  There were

a lot of reasons why probably it never happened . 


Larry Evans


From: NW-Mailing-List [mailto:nw-mailing-list-bounces at] On Behalf Of NW Mailing List via NW-Mailing-List
Sent: Wednesday, October 09, 2019 12:48 PM
To: nw-mailing-list at
Cc: NW Mailing List <nw-mailing-list at>
Subject: Roller Bearings and the Y6-b


There's an old saying that goes "there are no dumb questions, only dumb answers."  But I'm afraid I am about to ask a really dumb question. 


We all know that the last five Class A locomotives had roller bearings on their main and side rods.  But the Y6-b continued to be built long after the last Class A.  Yet the Y6-b never had roller bearings on the side and main rods.  I assume the reason was because the Class A was a high speed locomotive while the Y6-b, being compound, was a low speed puller.


I'd be interested if any one knows the reason the Y6-b never got the roller bearing treatment.


Bill King

Arlington, Virginia

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <>

More information about the NW-Mailing-List mailing list