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Re: [BRHSlist] Roller Bearing/friction Bearing

To: <BRHSlist@yahoogroups.com>
Subject: Re: [BRHSlist] Roller Bearing/friction Bearing
From: "Jan Kohl" <jkohl@n...>
Date: Sun, 16 Feb 2003 11:53:16 -0500
References: <23.2be72280.2b7efcdd@a...>
Leo, thanks, that was very helpful in my attempts to do my "Q" model RR! :)

Cheers!

Jan
----- Original Message ----- 
From: qutlx1@a... 
To: brhslist@Y... 
Sent: Friday, February 14, 2003 9:15 PM
Subject: [BRHSlist] Roller Bearing/friction Bearing


Roller bearing trucks have been on passenger and engines for many many 
decades. Starting in the late 50s roller bearings appeared on new 70 and then 
in the 60s 100 ton equipment(but not all by any means). I know from first 
hand experience that UTLX was still equipping some new cars w/friction 
bearings in 1969 and 1970. I dont have the field manual for the correct year 
handy but I do believe friction bearings were banned on new equip about 1972 
or so.
I can say w/absolute certainty that friction bearings were banned on all 
interchange equip in either 1992 or 1993. I was chasing cars in 1994 that 
were still equipped w/friction bearings. We had to make special arrangements 
w/CR to move the last block of 20 of them to scrap. Converted sideframe cars 
were banned in 1994 or so.Whats a converted sideframe you ask? Well it was 
the industry rage for several years.Take a friction beraring sideframe and 
modify the journal boxes, and put roller bearing equipped axles under the 
side frames. It was a cost saving measure.UTC did manage to get all those off 
the rails and/or converted to std roller bearings by 1994.
Leo



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