{"product_id":"athearn-rtr-71753-ho-scale-emd-sd40t-2-rio-grande-d-rgw-5407-dc","title":"Athearn RTR 71753 HO Scale EMD SD40T-2 Rio Grande D\u0026RGW 5407 DC","description":"\u003ch1\u003eAthearn RTR 71753 HO Scale EMD SD40T-2 Rio Grande D\u0026amp;RGW 5407 DC\u003c\/h1\u003e\n\u003cp\u003eThe SD40T-2 is a 6-axle diesel-electric locomotive built by General Motors Electro-Motive Division having a 16-cylinder EMD 645E3 diesel engine producing 3,000 horsepower (2,240 kW). 312 SD40T-2s were built for North American railroads between April 1974 and July 1980. This locomotive and the SD45T-2 are popularly called tunnel motors, but EMD’s term is SD40-2s with “cooling system modifications” because they were designed for better engine cooling in tunnels. The difference between this locomotive and its non-tunnel motor cousin, the SD40-2, are the radiator intakes and radiator fan grills located at the rear of the locomotive. The radiator air intakes in this model were along the deck to allow more fresh, cooler air to enter and less hot exhaust fumes lingering around the tunnel’s ceiling.\u003c\/p\u003e\n\u003cp\u003eDuring the late 1960’s and early 1970’s the Southern Pacific was looking for ways to solve the problem of their diesels overheating in their many tunnels and snow sheds. They determined that problem was caused by the locomotive’s taking in their own hot exhaust gases while in the confines of the tunnels. The solution came from EMD’s development team which relocated the radiator cooling intakes to the lower portion of the rear of the car body, creating what railfans dubbed the “Tunnel Motor.” This modification allowed the locomotives to take in cooler air that was nearer to the tunnel floor and thus reducing overheating. The Rio Grande was experiencing the same issues and decided to get some Tunnel Motors of their own, ordering some 73 SD40T-2’s in total in 5 separate orders. The last order, #5398-5413 were built in 1980. Features included a 4000 gal fuel tank, nose gyralights, and extended range dynamic brakes with exhaust silencer. The company wanted to order more of them but EMD convinced them to get their new SD50’s instead.\u003c\/p\u003e\n\u003cp\u003eFEATURES:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e88” nose with class lights (non-operational) and gyralight (Effect in DCC)\u003c\/li\u003e\n\u003cli\u003eStandard cab\u003c\/li\u003e\n\u003cli\u003eSmall EMD front plow\u003c\/li\u003e\n\u003cli\u003eExtended range dynamic brakes\u003c\/li\u003e\n\u003cli\u003e4,000 gallon fuel tank\u003c\/li\u003e\n\u003cli\u003eCab-mounted Leslie 3-chime horn\u003c\/li\u003e\n\u003cli\u003eFront small anticlimber\u003c\/li\u003e\n\u003cli\u003eExhaust silencer\u003c\/li\u003e\n\u003cli\u003eFine scale handrails\u003c\/li\u003e\n\u003cli\u003ePhoto-etched windshield wipers\u003c\/li\u003e\n\u003cli\u003eSeparately applied air tanks\u003c\/li\u003e\n\u003cli\u003eLED Lighting\u003c\/li\u003e\n\u003cli\u003eHTC truck sideframes\u003c\/li\u003e\n\u003cli\u003eSee-through cab windows\u003c\/li\u003e\n\u003cli\u003eWelded electrical cabinet air filter box\u003c\/li\u003e\n\u003cli\u003eAll-wheel electrical pickup\u003c\/li\u003e\n\u003cli\u003eSee-through dynamic brake fans\u003c\/li\u003e\n\u003cli\u003e“Mushroom” nose vent on right side\u003c\/li\u003e\n\u003cli\u003eSeparately applied wire grab irons\u003c\/li\u003e\n\u003cli\u003eRubber trainline and MU hoses with silver ends\u003c\/li\u003e\n\u003cli\u003eLate Dash-2 cab, front window arrangement per prototype\u003c\/li\u003e\n\u003cli\u003eSee-through radiator grilles with new rear truck gearbox specific for the tunnel motor\u003c\/li\u003e\n\u003cli\u003eSpeed recorder attached to appropriate axle per prototype\u003c\/li\u003e\n\u003cli\u003eMcHenry® operating scale knuckle couplers\u003c\/li\u003e\n\u003cli\u003eAll-wheel drive with precision gears for smooth and quiet operation\u003c\/li\u003e\n\u003cli\u003e5-pole motor with flywheels and multi-link drivetrain for trouble-free operation\u003c\/li\u003e\n\u003cli\u003eChassis accepts Genesis motor retro fit kit for an even higher performance motor\u003c\/li\u003e\n\u003cli\u003eDCC Ready 21-pin NEM Quick Plug™ technology\u003c\/li\u003e\n\u003cli\u003eNickel plated, blackened machined wheels\u003c\/li\u003e\n\u003cli\u003eWheels with RP25 contours operate on all popular brands of track\u003c\/li\u003e\n\u003cli\u003eHighly-detailed, injection molded body\u003c\/li\u003e\n\u003cli\u003eMinimum radius: 18” — Recommended radius: 22”\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eSPECIFICATIONS:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eMinimum Radius: 18\" (457 mm)\u003c\/li\u003e\n\u003cli\u003eReporting Mark: DRGW\u003c\/li\u003e\n\u003cli\u003eFull Road Name: Rio Grande\u003c\/li\u003e\n\u003cli\u003eScale: HO\u003c\/li\u003e\n\u003cli\u003eLighted: LED\u003c\/li\u003e\n\u003cli\u003eSub Brand: ATHEARN\u003c\/li\u003e\n\u003cli\u003eAxles: 6\u003c\/li\u003e\n\u003cli\u003eEra: 1971-1990\u003c\/li\u003e\n\u003cli\u003ePrototype Manufacturer: EMD\u003c\/li\u003e\n\u003cli\u003eDCC: Ready\u003c\/li\u003e\n\u003cli\u003eSound: Ready\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Athearn","offers":[{"title":"Default Title","offer_id":44097134788821,"sku":"ATH71753","price":139.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0520\/1972\/4454\/products\/athearn-rtr-71753-ho-scale-emd-sd40t-2-rio-grande-d-rgw-5407-dc.jpg?v=1680288433","url":"https:\/\/www.whiterosehobbies.com\/products\/athearn-rtr-71753-ho-scale-emd-sd40t-2-rio-grande-d-rgw-5407-dc","provider":"White Rose Hobbies","version":"1.0","type":"link"}