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Reply to "Sharknose have diaphragms?"

On page 27:

DIAPHRAGMS

All indications are that at least some of the PRR BF-16 units were delivered with diaphragms between the units as were all the other cab units, including the passenger sharks, but I do not have either direct documentation or photographs to prove this is true or which units did or did not get them. In early December 1951, the PRR was asking EMD to stop equipping their cab-units with diaphragms, so it would seem logical that a similar situation occurred with Baldwin, but this is just a guess. Since the units without the coupler doors, 2000-2009 were all delivered by October 1951, it is likely they were delivered with diaphragms. It is possible that some or all of the 2010-2027 units delivered in 1952 were delivered without diaphragms. In December the PRR initiated Betterment 1102 "Cab, Rear Door and Buffer Arrangement – Modification of Walkway between Units" for BF-15a and BF-16 classes which is worded very closely to the tracing showing removal of the diaphragms on the EMD cab units. Thus removal may have begun on the early BF-16 before the final units were even de-livered. Regardless, since BLI has chosen to model the units with added body side grilles, added c1952-54, if diaphragms had been factory installed, they likely were removed in the same period anyway.

 

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