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| Re: Technical Discussion About Axle Journal Bearings (693549) | |||
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Re: Technical Discussion About Axle Journal Bearings |
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Posted by randyo on Sun Oct 12 21:22:49 2008, in response to Re: Technical Discussion About Axle Journal Bearings, posted by SelkirkTMO on Sat Oct 11 23:00:40 2008. Nobody knows whether or not the Pioneer III trucks on the R-32s or the General 70 trucks on the R-29s were a dosaster or not since there were insufficient numbers of them ordered to make a viable test of their performance. Only 4 cars iwth each type of truck were specified and there were no orders given either on the BMT or IRT to even keep those cars together. As a result, when these cars did run, they ran in trains with other cars with standard heavyweight trucks and could not give an accurate accounting of their actuale performance capabilities. The TA should have ordered 10 cars of each type and required that they be kept together in one train and monitered for performance. Then an accurate assessment could have been made. As for the R-32s spending time in the shop, sources have told me that they were in the shop for problems totally unrelated to the trucks and in the typical TA paranoia of the day, when the upper TA management discovered that they had spent so much time out of service, they jumped to the conclusion that it was because of the trucks and declined to consider any future orders of inside bearing trucks for a long time. As for the earlier use of inside bearing trucks, when the PCC streetcars and the later PCC rapid transit cars were being developed, I have heard that some R-9s received PCC trucks as an experiment and the B of T engineers who rode the cars were afraid of the extra sway associated with this type of truck and declined to consider their application in NY. |
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