{"product_id":"wheels-of-time-50188-n-scale-536-general-service-flatcar-southern-pacific-sp-10-pack","title":"Wheels of Time 50188 N Scale 53'6\" General Service Flatcar Southern Pacific SP 10 Pack","description":"\u003ch1\u003eWheels of Time 50188 N Scale 53'6\" General Service Flatcar Southern Pacific SP\u003c\/h1\u003e\n\u003ch2\u003e10 Pack\u003c\/h2\u003e\n\u003cp\u003eThese 53'-6\" flatcars were constructed with a welded fish belly steel frame in contrast to the cast steel GSI frame. The fish belly frame provided an optimal distribution of tension and compression forces from the center of the car to the bolsters. Think of it as a bridge. In addition, fabricating a welded frame was far less labor intensive than an equivalent riveted frame. The welded frame proved extremely durable holding up to rugged service. As these flat cars aged-out due to ARR interchange age limit, they found it's way into many years in maintenance-of-way service. A number of builders constructed these flat cars such as the Pacific Car \u0026amp; Foundry (P.C. \u0026amp; F.), Marine Industries (Canada), Pullman-Standard, Bethlehem Steel, and including railroad car shops such as the Western Pacific.\u003c\/p\u003e\n\u003cp\u003eThey were designated as FM by the AAR mechanical people. They carried anything bulky that can't be placed in a box car - from finished lumber to machinery equipment.\u003c\/p\u003e\n\u003cp\u003eIn 1977 - 1978, Southern Pacific shops rebuilt 66 (1963-64 built) SP Class F-70-12 flatcars with bulkheads like the originally built GBEC SP Class F-70-26 bulkhead flatcars. They were renumbered as SP 507733 - 507799 series and with an added “R” to it’s original class. They were 48’-6” between bulkheads.\u003c\/p\u003e\n\u003cp\u003eFEATURES:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eProperly weighed cars for smooth derailment-free running\u003c\/li\u003e\n\u003cli\u003eProper ride height\u003c\/li\u003e\n\u003cli\u003eBody-mounted knuckle couplers\u003c\/li\u003e\n\u003cli\u003e33\" metal wheels for smooth rolling\u003c\/li\u003e\n\u003cli\u003eInternal steel plate so loads can be attached with magnets\u003c\/li\u003e\n\u003cli\u003eExtra fine details\u003c\/li\u003e\n\u003cli\u003eSharp paint, lettering, car numbers to match the real thing\u003c\/li\u003e\n\u003cli\u003eMultiple car numbers for fleet owners for realistic train operations\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eNOTE: Road number may vary from picture shown.\u003c\/p\u003e","brand":"Wheels of Time","offers":[{"title":"Default Title","offer_id":51155946471637,"sku":"WOT50188","price":289.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0520\/1972\/4454\/files\/wheels-of-time-50188-n-scale-536-general-service-flatcar-southern-pacific-sp-10-pack.png?v=1740765331","url":"https:\/\/www.whiterosehobbies.com\/products\/wheels-of-time-50188-n-scale-536-general-service-flatcar-southern-pacific-sp-10-pack","provider":"White Rose Hobbies","version":"1.0","type":"link"}