# MLW RSC-24 > Mediated Wiki article. Canonical URL: https://mediated.wiki/source/MLW_RSC-24 > Markdown URL: https://mediated.wiki/source/MLW_RSC-24.md > Source: https://en.wikipedia.org/wiki/MLW_RSC-24 > Source revision: 1337156515 > License: Creative Commons Attribution-ShareAlike 4.0 International (https://creativecommons.org/licenses/by-sa/4.0/) {{Infobox locomotive | name = MLW RSC-24 | powertype = [Diesel-electric](/source/Diesel-electric) | image = | caption = | builder = [Montreal Locomotive Works](/source/Montreal_Locomotive_Works) | ordernumber = | serialnumber = 82589–82592 | buildmodel = RSC-24, Specification DL-814 | builddate = March to April 1959 | totalproduction = 4 | rebuilder = | rebuilddate = | numberrebuilt = | aarwheels = A1A-A1A | uicclass = A1A'A1A' | gauge = {{track gauge|ussg|allk=on}} | trucks = | wheeldiameter = | trailingdiameter = | minimumcurve = | wheelbase = | length = | width = | height = | axleload = | weightondrivers = | locoweight = | fueltype = | fuelcap = | lubecap = | coolantcap = | watercap = | sandcap = | consumption = | watercons = | primemover = [ALCO](/source/American_Locomotive_Company) [12-244](/source/ALCO_244) | rpmrange = | enginetype = [V12](/source/V12_engine) [Four-stroke](/source/Four-stroke_engine) [diesel](/source/Diesel_engine) | aspiration = | displacement = {{Convert|8016|cuin|L|abbr=on}} | alternator = | cylindercount = 12 | cylindersize = {{Convert|9|x|10.5|in|mm|0|abbr=on}} | transmission = [Electric](/source/Diesel-electric_transmission) | generator = [DC](/source/Direct_current) generator | tractionmotors = DC traction motors | multipleworking = | maxspeed = | poweroutput = {{Convert|1400|hp|kW|-1|abbr=on}} | tractiveeffort = | factorofadhesion = | trainheating = | locobrakes = | locobrakeforce = | trainbrakes = | safety = | operator = [Canadian National Railway](/source/Canadian_National_Railway) | operatorclass = MR-14a | powerclass = | numinclass = | fleetnumbers = 1800–1803 | officialname = | nicknames = | axleloadclass = | locale = | deliverydate = | firstrundate = | lastrundate = | retiredate = Mid-1970s | preservedunits = | restoredate = | scrapdate = | currentowner = | disposition = All scrapped }} The '''MLW RSC-24''' was a type of [diesel-electric locomotive](/source/diesel-electric_locomotive) built by [Montreal Locomotive Works](/source/Montreal_Locomotive_Works) for use on the [Canadian National Railway](/source/Canadian_National_Railway) (CN). Only four RSC-24s were built – all in 1959. {{Cite magazine|last=Schmidt|first=Brian M.|title=Montreal RSC24 diesel locomotives|page=6|issue=Winter 2023|volume=24|work=[Classic Trains](/source/Classic_Trains)|publisher=[Kalmbach Media](/source/Kalmbach_Media)}} They were numbered 1800–1803 by CN. The locomotives were conceived by MLW as a way to use the 12-cylinder 244 diesel engines removed from [MLW FPA-2](/source/ALCO_FA)s that were receiving the more-capable [Alco](/source/Alco) 251 engine (making them similar to the [MLW FPA-4](/source/MLW_FPA-4) locomotive). CN used these unique units to replace [2-6-0](/source/2-6-0) or [4-6-0](/source/4-6-0) [steam locomotives](/source/steam_locomotives) on light-rail branch lines in eastern Canada. MLW designed the locomotives to use a switcher frame, resulting in the "squashed" appearance of a [road switcher](/source/road_switcher). This was largely the result of a very short rear hood housing the electrical cabinet, whereas they were located in the long hood on most road switcher designs. To make the locomotives suitable for weight-restricted light rail branch lines, MLW spread the weight over the rail surface using A1A-A1A trucks (3 axle trucks, with the center axle of each truck unpowered) that had been manufactured by [Dominion Foundries and Steel](/source/Dofasco) (DOFASCO); this same truck was also adopted for the [MLW RSC-13](/source/MLW_RSC-13). Less weight on the powered axles resulted in less traction, hence the need to de-rate the engine horsepower to {{Convert|1400|hp|kW|-1|abbr=on}} to preclude wheel slippage. In May 1969, 1802 was wrecked in a head-on collision at [Pointe-à-la-Garde, Quebec](/source/Pointe-%C3%A0-la-Garde%2C_Quebec). The remaining three units found their way to the [South Shore](/source/South_Shore_(Nova_Scotia)) of [Nova Scotia](/source/Nova_Scotia) toward the end of their career by the late 1960s, and their domain extended throughout CN's former [Halifax and Southwestern Railway](/source/Halifax_and_Southwestern_Railway) system. The troublesome model 244 diesel engine plagued the units throughout their lifespan, and they were retired in the mid-1970s when CN also scrapped its [MLW RSC-13](/source/MLW_RSC-13) fleet; the A1A trucks of the RSC-13 and RSC-24 fleets were used by CN to re-truck several dozen [MLW RS-18](/source/MLW_RS-18)s to become [MLW RSC-14](/source/MLW_RSC-14)s. == See also == * [List of MLW diesel locomotives](/source/List_of_MLW_diesel_locomotives) ==References== {{Reflist}} {{MLW diesels}} {{DEFAULTSORT:Mlw Rsc-24}} Category:A1A-A1A locomotives RS-24C Category:Canadian National Railway locomotives Category:Railway locomotives introduced in 1959 Category:Diesel–electric locomotives of Canada Category:Standard-gauge locomotives of Canada --- Adapted from the Wikipedia article [MLW RSC-24](https://en.wikipedia.org/wiki/MLW_RSC-24) by Wikipedia contributors ([contributor history](https://en.wikipedia.org/wiki/MLW_RSC-24?action=history)). Available under [Creative Commons Attribution-ShareAlike 4.0 International](https://creativecommons.org/licenses/by-sa/4.0/). Changes may have been made.