Greetings All,
Locomotive Spotlight #5-2026
A White Knight Arrives
Welcome to another installment in the ongoing Locomotive Spotlight Series. Today the spotlight will shine on Kansas City Southern snoot nose SD40-2 #686 in the "white knight" paint scheme. Pay no attention to the label the locomotive is powered.
The ongoing search for a pair of Walthers Trainline Southern Railway Alco FA-FB locomotives continued to deliver notifications for the Southern, Southern Pacific and Kansas City Southern railroads from ebay. Being a fallen flag this locomotive piqued my interest and I made the move to add it to the roster.
Also complicit in the purchase was Trains & Railroads of the Past Issue #31, 3rd Quarter 2022 magazine that featured an excellent article by photographer and author Carl Graves looking back at the KCS White Knights of forty and fifty years ago. I just happened to be looking at this article when I saw the KCS snoot nose offering.
Prototype Information
The EMD SD40-2 is a 3,000-horsepower C-C diesel–electric locomotive built by EMD from 1972 to 1984. The KCS locomotives were delivered in white paint with a large red KCS on the long hood which gave them the nickname of "White Knights".
The SD40-2 was introduced in January 1972 as part of EMD's Dash 2 series, competing against the GE U30C. Although higher-horsepower locomotives were available, including EMD's own SD45-2, the reliability and versatility of the 3,000-horsepower SD40-2 made it one of the best-selling models in EMD's history, edged out only by the GP9, and was the standard of the industry for several decades after its introduction. The SD40-2 was an improvement over the SD40, with modular electronic control systems similar to those of the experimental DDA40X.
"4/24/77, KCS SD40-2 644" by OHFalcon72 is licensed under CC BY-NC-ND 2.0.Peak production of the SD40-2 was in the mid-1970s. Sales of the SD40-2 began to diminish after 1981 due to the oil crisis, increased competition from GE's Dash-7 series and the introduction of the EMD SD50, which was available concurrently to late SD40-2 production. The last SD40-2 delivered to a United States railroad was built in July 1984.
"More of Roger Puta's KCS Photos at Pittsburg, Kansas" by railfan 44 is marked with Public Domain Mark 1.0.Kanas City Southern SD40-2 #637 was the very first SD40-2 constructed in January 1972. KCS SD40-2s #677-690 were built with extended "snoot" noses. Many are now in service with Canadian Pacific Kansas City. In total the KCS purchased forty six EMD SD40-2s
"Kansas City Southern KCS 676 (SD40-2) (10568689756)" by Gary Todd from Xinzheng, China is marked with CC0 1.0."6-22-21, KCS SD40-3 646" by OHFalcon72 is licensed under CC BY-NC-ND 2.0.The KCS SD40-2 Snoot Nose
The KCS purchased fourteen "snoot nose variants" of the EMD SD40-2. The question is what was a snoot nose used for? Lets take a look at the reason for this modification. A crew benefit was that the longer noses included a separate room for the onboard chemical toilet, and an enclosed space for better ventilation. According to Craig Hensley via Wikipedia the 123-Inch Nose was utilized by railroads like Santa Fe (ATSF) and Kansas City Southern (KCS) for extensive Locotrol remote-consist equipment. That's a Jimmy Durante nose for sure!!
"NS i70 Irondale, AL 3-1-15" by JEFFG205 is licensed under CC BY-SA 2.0.
More Kansas City Southern Snoot Nose Info
In the Trains & Railroads of the Past 3rd Quarter 2022 magazine article Kansas City Southern White Knights author Carl Graves reported on his encounters with the KCS White Knights during the 1970s and 1980s. The new White Knights started to arrive in 1966 adding a new paint scheme to the KCS which had relied on red locomotives.
"More of Roger Puta's KCS Photos at Pittsburg, Kansas" by railfan 44 is marked with Public Domain Mark 1.0.
Mr. Graves reports that the KCS under Deramus management had adopted the business practice that railroad revenue was to be expended in non railroad operations only which led to the inevitable suffering of the railroad infrastructure. Sounds familiar.
Another management policy was to run much longer trains using Locotrol much like the Southern Railway that had been running such trains with some success. Also sounds familiar with today's distributed power locomotives.
The Locotrol system worked liked this... in Shreveport, LA or Kansas City, MO KCS would assemble a train of 200 or more cars, the maximum length and tonnage that couplers and air brakes would allow. Two to four SD40-2s would be placed on the headend, the first of which would be equipped as a master. One or two crewless "slave" units would be placed two thirds of the way back in the enormous consist.
Mr. Graves further reports that from the start these mega-trains had troubles, some not related to Locotrol. Two hundred car trains did not fit into the forty-fifty car length sidings commonly found on the route.
The other problem was when the Locotrol lost signal and the slave units continued powering the train in the last signal it received like Run 8. Derailments and train breaks occurred, with some of them in excess of sixty cars on the ground with the "slave units" laying on their sides still in notch 8.

"Figure 1 Accident Site-Rev 1" by NTSBgov is marked with Public Domain Mark 1.0.
In 1984 KCS completely abandoned crewless mid train helpers for manned rear end helpers due to the cost to update the Locotrol system as well as the need to run more and heavier southbound trains.
In 1984 KCS completely abandoned crewless mid train helpers for manned rear end helpers due to the cost to update the Locotrol system as well as the need to run more and heavier southbound trains.
Model Information
The newest locomotive in the fleet is this Athearn BB KCS SD40-2 "snoot nose" in the White Knight or Ghost paint scheme. The locomotive was a used purchase at a nice price since it was missing some detail parts which I believed I have on hand.
The locomotive came with the motor and trucks hardwired but with no headlight. The motor connects to the tower gears via the newer Athearn hex driveshafts. This is technology I can embrace!!! Out of the box the engine did not run. A removal of the shell revealed the motor had come loose from its mounting during transit even though it was well packaged. An easy fix and the engine ran well after the motor was reseated.
A large #3 was on the box and fuel tank. Not sure what it meant. Where I live the number 3 is for late NASCAR driver Dale Earnhardt. That will be painted out
Original testing of the KCS 686 was between two Athearn BB BN SD40-2s where they ran well in consist.
The 686 featured rear numbers in the number boards but no rear handrails.
After running the engine I took the shell off and did some of the cosmetic repairs like adding rear metal handrails from a GP38-GP40 handrail set that has been in the parts room for almost a decade. The new handrails were brush painted with acrylic red spice.
Numbers were added to the front number boards.
A scrap box headlight was soldered to the front truck power pickup and attached to the headlight mounting bracket with a 2-56 nut and bolt.
In the KCS white knight article the author noted that both the KCS and BN units were usually clean even as they hauled coal tonnage past his vantage points. I added a little black weathering to the vents, louvers and fans as seen in several photos.
The 686 is now ready for prime time. KCS modelers will note that the 686 had black handrails. If the engine had the old Athearn metal handrails it would have them now.
KCS 686 teams up with BN and ex BN SD40-2s to haul tonnage to and from Terminal Yard.
Original testing of the KCS 686 was between two Athearn BB BN SD40-2s where they ran well in consist.
The 686 featured rear numbers in the number boards but no rear handrails.
After running the engine I took the shell off and did some of the cosmetic repairs like adding rear metal handrails from a GP38-GP40 handrail set that has been in the parts room for almost a decade. The new handrails were brush painted with acrylic red spice.
Numbers were added to the front number boards.
A scrap box headlight was soldered to the front truck power pickup and attached to the headlight mounting bracket with a 2-56 nut and bolt.
In the KCS white knight article the author noted that both the KCS and BN units were usually clean even as they hauled coal tonnage past his vantage points. I added a little black weathering to the vents, louvers and fans as seen in several photos.
The 686 is now ready for prime time. KCS modelers will note that the 686 had black handrails. If the engine had the old Athearn metal handrails it would have them now.
KCS 686 teams up with BN and ex BN SD40-2s to haul tonnage to and from Terminal Yard.
Final Thoughts and Comments
The ongoing search for the Walthers Trainline Alco Southern FA-FB continues to be a big drain on my wallet!!! The KCS SD40-2 was reasonably priced but I never would have saw it if not for the "you may like this" notifications that come with the Southern Railway locomotive search!!! And I would have cruised right past it if not for the TRP article that I was reading at the time of the notification.
That said the KCS 686 is a nice looking, good running locomotive that can be run in multiple with the various BN or HLCX SD40-2s on the combined family roster.
Additional Links and Info
KCS 686 at Pittsburg, KS 1984
KCS 686 at Kansas City, MO 1989.
KCS 686 at Wylie, TX 2006
EMD SD40-2 Wikipedia
Utah Rails Snoot Nose Report
Trains and Railroads of the Past 3rd Quarter, 2022.
Thanks for reading and watching!!
See you soon!!!



_(10568689756).jpg)






