on Tue Jun 11 14:13:58 2019, in response to Re: Tuscarora Train of the Week No. 17, posted by gbs on Mon Jun 10 23:07:49 2019.
As built, the 44s and 46s had the same brake pipe pressure. When the R-44s received the Westcode version of RT-2 (SMEE) which actually happened pre GOH, the brake pipe pressure remained the same. When the R-46s were GOHed, 2 experimental trains were outfitted, one with WABCO RT-2 and the other with the NYAB version called Newtran. After the tests, NYAB won the contract and the GOHed 46s received the Newtran brake package with the standard SMEE brake pipe pressure.