Q fans on SD40-2greenspun.com : LUSENET : Southern Railway : One Thread
Did any of Southern's SD40-2's have the "Q" fan?
-- Marty Flick (Golddenim@insight.rr.com), November 09, 2002
Not likely, I believe the Q fans were introduced on the GP50 series of locomotives. They were designed to reduce noise and this was accomplished in part with their blade arrangement.
-- JD Santucci (email@example.com), May 08, 2003.
None of Southern's were delivered with them, but NS(N&W) 6189-6207 have Q-fans
-- Robb Fisher (firstname.lastname@example.org), January 07, 2004.
Yes! Some of the final orders i believe (after 1975) had Q-fans. And more correctley the N&W units were phase one SD40-2's with Three brake cylenders per truck instead of two,and "chickenwire" grilles(instead of the later "Corrugated"ones)
-- Gabe Scotto (email@example.com), October 17, 2004.