The EMD GP9 is a four-axle diesel-electric locomotive built by General Motors' Electro-Motive Division between 1954 and 1959. The GP9 succeeded the GP7 as the second model of EMD's General Purpose (GP) line, [1] incorporating a new sixteen-cylinder engine which generated 1,750 horsepower (1.30 MW). [2]

Sep 23, 2005 · Horn Installation on NYC GP-7 and GP-9. Does anybody know what was installed on these early geep locomotives delivered to the New York Central? Photos of GP-7s show a single horn on the engineer’s side (right side) of the long hood facing forward and a single horn on the fireman’s side (left side) of the cab facing back along the short hood.

All look to have the Nathan P3 chime horn in the center of the cab roof, although the misnumbered #3422 (ex T&NO #283) had a 5 chime horn in a photo on page 20 of the 1973 SP Motive Power Annual. Steam generator stacks changed over the years, but most SP units originally had a round tall stack, later a lower more standard looking stack.

Mar 31, 2017 · From photo evidence, the Leslie A125H & M dual horn was the standard Santa Fe replacement horn for the doodlebugs, sometime in the mid 1930’s. Musically, it sounded G#, and B below middle C. However, by the 1960’s some of …

Did the C&O use a slightly offset mounting position for the horns on its GP9 units? I ask because I recently got an Athearn Genesis GP9 and the horn seems to be in the right location on the short hood (engineer's side), but the bells of the five-chime horn are angled slightly toward the middle of the hood rather than firing straight ahead.

Jan 5, 2025 · Photos of UP's fleet of GP9s when they were new show that their air horns were originally located at the top of the cab roof, at the centerline of the locomotive. In the mid 1960s, UP began changing the horn location from the cab roof, to above the radiator fans.

All three horns above have the longest on the left. Obviously, photos from above are needed, and they are rare. The best I could find of either GP7 or GP9 is in Pennsy Power II, on p. 270, looking down on GP9 7145. The rear of the horn is visible, and …

Aug 8, 2022 · Cody answers this question about the Union Pacific GP9 in this video of Ask Trains. Do you have questions about details on diesel locomotives, or would you like to learn more about your model railroad? Send us an email at: [email protected] …………………………………

Jan 16, 2013 · Yes, the aftermarket Tsunami has the Nathan M3 horn. The factory installed version (in the D&RGW GP9's) does not, factory decoders usually come with a few less features. I purchased 5922 without sound and plan on adding aftermarket Tsunami so I can have the M3 horn. ... > options with these decoders. ...

GP7 to become the 1,750 horsepower GP9. Externally, the first GP9s wer. virtually unchanged from the last GP7s. Later versions would include different louver arrangements and the last on.