The definitive date that a part or type of car was banned in interchange would be found in the AAR Field Manual of Interchange Rules was issued annually with all interchange rules and updates. My memory is that rules 95 or 99 was the one that specified equipment outlawing.
A typical passage would be similar to the following. As of 1/1/1959 Allied Full Cushion trucks are banned from interchange. The ruling would also state the AAR designated part number,etc.
The discussion about the early PRR banning would have been issued through the AAR in what were called maintenance advisories and/or early warning letters. These pieces of paper would have been sent to each AAR subscriber. The commonly used word was an embargo.
This from someone who spent part of each working day for 16 years “discussing” the Field Manual rules with repair shops, railroads,AAR and FRA inspectors. Leo Phillipp On Mar 31, 2022, at 12:45 PM, HOL WAGNER <holpennywagner@msn.com> wrote:
And just because they're related to the Allied trucks questions, here are three photos, the first showing waycar 13554 on Allied trucks in 1962, and the second showing it back on its original trucks in 1964 so it could be used in interhange (pool) service.
The Allied trucks were then placed under waycar 14151 when it got its side door and was assigned to the Sterling, Colo.-Cheyenne, Wyo. branch.
Hol
From: CBQ@groups.io <CBQ@groups.io> on behalf of HOL WAGNER <holpennywagner@msn.com>
Sent: Thursday, March 31, 2022 11:38 AM
To: CBQ@groups.io <CBQ@groups.io>
Subject: Re: [CBQ] Allied trucks in freight service
Everybody be patient, as I've got a copy of a Bill Schultz Jeep article for proofreading, and it will answer the Allied trucks questions.
Hol
From: CBQ@groups.io <CBQ@groups.io> on behalf of Charlie Vlk <cvlk@comcast.net>
Sent: Thursday, March 31, 2022 11:32 AM
To: CBQ@groups.io <CBQ@groups.io>
Subject: Re: [CBQ] Allied trucks in freight service
All-
The question of interest that started all this has not, I believe, been answered.
At some point in time the Allied Full Cushion trucks were removed from boxcars and Jeeps alike….the question is When?
I imagine a perusal of the equipment diagram books would provide as definitive answer short of detailed shop or accounting records. The change in trucks would certainly
eventually be recorded there.
I don’t recall seeing an Allied Full Cushion truck in service but 1955 is a little early for ten year old me to have known enough to recognize one if I saw it. By the late
1950s I think I would have noticed something other than a freight car truck under a box car or ex-troop kitchen car.
Without starting a deep research project I have seen a couple of Model Railroad and railroad history sites stating that the Allied Full Cushions were banned in 1955 or 1959,1960.
None of them has proof and it would be nice to be able to see the source document that supports that they were banned for interchange. It sounds like the PRR was satisfied that if the truck was upgraded it made them suitable for use even in passenger trains.
The CB&Q did eventually retrofit all their interchange equipment but, being cheap, tried reuse of them on waycars but gave up probably because they rode worse than the No.7 woodbeam trucks and ride control (??) trucks on the cars in the trial.
Charlie Vlk
From: CBQ@groups.io <CBQ@groups.io> On Behalf Of
Bob Chaparro via groups.io
Sent: Thursday, March 31, 2022 11:40 AM
To: CBQ@groups.io
Subject: Re: [CBQ] Allied trucks in freight service
1959 - Allied Full-Cushion truck banned due to derailments.
"Banned" means "will not be accepted in interchange" or "prohibited in interchange". This was by the authority of the railroads as represented by the AAR and subsequent ARA.
Bob Chaparro
Hemet, CA
<CB&Q Waycar 13554, Denver,Colo., 8-1962, Allied Trucks, Hol Wagner photo.jpg> <CB&Q Waycar 13554, Denver, Colo., 7-1964, Allied Trucks Replaced, Hol Wagner photo.jpg> <CB&Q Waycar 14151, Cheyenne, Wyo., 5-1964, Hol Wagner photo.jpg>
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