Driver on trailer showing hollow interior. This design promotes a favorable strength-to-weight ratio and allows the fine tuning necessary for high-speed operation. Unlike a typical spoked driver, a Boxpok driver is almost entirely hollow. A video of that historic moment can be seen below. On Februthe PRR T1 Trust reached a major milestone when it cast the first Boxpok (Box Spoke) driver the United States has seen in nearly 70 years. The first Boxpok driver fresh out of the mold. The entire pour took just less than two minutes, and history was made as the PRR T1 Trust cast the first Boxpok driver in nearly 70 years. The steel was heated to 2,800 degrees Fahrenheit and then poured into the mold from two sites simultaneously. Efforts such as this one, to create a powerful new machine, will become increasingly important if steam excursion service is to be present in another 60 years. Most US built steam locomotives operating today are over 60 years old. Perhaps more importantly, this locomotive will inject new life blood into an aging heritage fleet. The production of PRR T1 5550 will fill a large gap in historical locomotive preservation. The T1 Trust is a labor of love, and seeks to bring back to life the PRR T1 locomotive so she can be enjoyed for generations to come. The goal is simple: to provide mainline steam excursion service and set the World Speed Record for a steam locomotive. Slated to become the fifty-third locomotive of her class when complete, 5550 combines stunning art deco design with a unique wheel arrangement specifically engineered for high-speed operation. Through hard work, dedicated volunteers and the financial support of many generous donors, the T1 Trust is building PRR T1 5550. The T1 Trust is a non-profit organization that seeks to right this wrong. Sadly, not a single example of this magnificent machine escaped the scrapper’s torch. In all, 52 class T1 locomotives were produced, 25 at the PRR’s Altoona shops and 27 at the Baldwin Locomotive Works in Philadelphia. The 5550 Launch Painting by world-renowned Transport Artist Jonathan Clay gives a glimpse of what the finished T1 locomotive will look like. The T1 Trust intends to set the record straight by constructing PRR T1 5550 and allowing her to claim her rightful place as the thoroughbred champion of steam locomotives. Therefore, the current world record of 125.88 mph is held by a locomotive known as the Mallard in the UK. However, the day-to-day grind of railroading in the United States immediately following World War II did not allow for the luxury of a world record attempt. Evidence suggests that the T1 locomotives could attain speeds greater than 140 mph. The Pennsylvania Railroad (PRR) T1 Steam Locomotive Trust is using SOLIDWORKS to build the world’s fastest steam locomotive, the PRR T1 5550, which represents the pinnacle of steam locomotive design in the United States.
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