by MACTRAXX
Everyone - This discussion about friction and roller bearings is very interesting - especially some history
of the transition between the two used on most types of rail equipment.
I noticed mention of the September 6, 1943 PRR "Congressional" wreck at Frankford Junction, Philadelphia, PA.
(Note spelling: Frankford is a nearby neighborhood in the City of Philadelphia-and not the capital of Kentucky.)
A common misconception (that I also had) was that excess speed on the 50 MPH curve just east of SHORE Tower
was the prime reason - until reading that an overheated friction journal box was the actual cause...
The posted Wikipedia page for the 9/6/1943 Frankford Junction wreck has two informative external links:
"September 6, 1943 - The wreck off the Congressional Limited at Philadelphia, PA" which leads to an issue
of the Lancaster (PA) Chapter-NRHS "Dispatcher" September 2009 issue (Volume 40-#9) that has a three
page article about the wreck along with 18 pictures - The Wikipedia page looks to be directly copied from
this writing that interestingly does not have an author mentioned. The second is a 9 page PDF of an ICC
report - Investigation #2726 PRR Accident Shore (Tower) PA 9/6/1943 giving more insight on this subject.
A more recent derailment that some may be more familiar with was the November 10, 1979 CP wreck
in Mississauga, Ontario just west of Toronto involving hazmat - the cause was an overheated friction
journal box - which were being gradually phased out at that time...
https://en.wikipedia.org/wiki/1979_Miss ... derailment
Something I was not fully aware of was the actual time period when friction bearing trucks were banned -
From Ed Kaminski of ACF Industries: (research finding)
Interchange service of hazmat materials: January 1, 1991
Non-hazardous materials: January 1, 1994
Conversion friction roller bearing side frames: January 1, 1995
Reason for ban: Hot Bearing Detectors could not "see" them...
This is the type of historical research that I like to contribute to - Thanks All...MACTRAXX
of the transition between the two used on most types of rail equipment.
I noticed mention of the September 6, 1943 PRR "Congressional" wreck at Frankford Junction, Philadelphia, PA.
(Note spelling: Frankford is a nearby neighborhood in the City of Philadelphia-and not the capital of Kentucky.)
A common misconception (that I also had) was that excess speed on the 50 MPH curve just east of SHORE Tower
was the prime reason - until reading that an overheated friction journal box was the actual cause...
The posted Wikipedia page for the 9/6/1943 Frankford Junction wreck has two informative external links:
"September 6, 1943 - The wreck off the Congressional Limited at Philadelphia, PA" which leads to an issue
of the Lancaster (PA) Chapter-NRHS "Dispatcher" September 2009 issue (Volume 40-#9) that has a three
page article about the wreck along with 18 pictures - The Wikipedia page looks to be directly copied from
this writing that interestingly does not have an author mentioned. The second is a 9 page PDF of an ICC
report - Investigation #2726 PRR Accident Shore (Tower) PA 9/6/1943 giving more insight on this subject.
A more recent derailment that some may be more familiar with was the November 10, 1979 CP wreck
in Mississauga, Ontario just west of Toronto involving hazmat - the cause was an overheated friction
journal box - which were being gradually phased out at that time...
https://en.wikipedia.org/wiki/1979_Miss ... derailment
Something I was not fully aware of was the actual time period when friction bearing trucks were banned -
From Ed Kaminski of ACF Industries: (research finding)
Interchange service of hazmat materials: January 1, 1991
Non-hazardous materials: January 1, 1994
Conversion friction roller bearing side frames: January 1, 1995
Reason for ban: Hot Bearing Detectors could not "see" them...
This is the type of historical research that I like to contribute to - Thanks All...MACTRAXX
Last edited by MACTRAXX on Thu Mar 02, 2023 9:41 pm, edited 1 time in total.
EXPRESS TRAIN TO NEW YORK PENN STATION-NO JAMAICA ON THIS TRAIN-PLEASE STAND CLEAR OF THE CLOSING TRAIN DOORS