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| Re: Question about original R-46 air-brake release (618162) | |||
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Re: Question about original R-46 air-brake release |
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Posted by randyo on Sat May 17 16:14:22 2008, in response to Re: Question about original R-46 air-brake release, posted by trainsarefun on Sat May 17 11:57:19 2008. The R-44s had a WABCO RT-5 brake package similar to most of the MTA's commuter equipment. The exception is the New Haven division's M-2s which like the R-46s have a Westcode RT-5 (or whatever Westcode calls it) brake package. Both systems utilize electronic P wire control of braking although 1 train each of R-44s and 46s received an experimental WABCO RT-2 brake package with cineston cotrollers, ultimately, the R-44s received a similar Westcode package and the R-46s receved NYAB's equivalent which is called Newtran. The R-44 brake release sounds like the train had a bit too many baked beans for lunch while the R-46 package sort of moans when it releases. Except for the single handle controller on the R-46s, the brake package is almost identical to the brake packages on the Phase II GOH R-32s and the CI GOH R-42s as well as the R-62As and R-68s despite the slight difference in the sound of the release. The SIRTOA R-44s received the WABCO RT-2 brake package with the more common cineston controller. The Westcode brake package that found its way to the R-44s was tried on a single train of R-42s prior to its installation on the R-44s with the single handle controller placed in only one car of each married pair. I remember seeing the specs for the GOH of the R-46s and the specs called for the installation of a WABCO RT-2 brake package with a cineston controller or its equivalent. I don't believe any such requirement was specified for the R-44s since they actually received the Westcode brake package prior to GOH. One train of R-44s actually had the Westcode P wire brake package as an experiment which may have been the reason that the Westcode brake package rather than WABCO's was installed on the R-46s as delivered. |
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