by Manny Jacob, Mike McGrattan and Dan Garcia
These units came in three different orders and there are minor differences between each order. Modellers will find that the Rapido Trains Inc. locomotive includes many of the parts needed to accurately duplicate these variations.
Air conditioning was first added to the cab roof of 6415 on a trial basis in 1997-98 and was eventually installed on the rest of the fleet by 2002. This resulted in the relocation of radio antenna; consult photos.
Plexiglas bug shields were added to nose beginning in 1997.
New style screens over air intakes started to appear in 1997 and gradually fitted to entire fleet.
A second radio antenna was added to cab roof after the February 1997 elimination of conductors. This antenna allowed the front end to communicate with OBS crews inside the train on a different frequency..
Yellow rerail frogs eventually removed from all units between 1998 and 1999.
Pilots changed to plows on some Canada-scheme units such as 6420, 6444 and 6456 in the 2000s.
Original bell (located behind pilot on conductor's side of coupler) changed to e-bell in the early-mid-2000s.