HO Scale: Thrall 4727 Carbon Black Covered Hopper - DeGussa


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ScaleTrains HO Scale: Thrall 4727 Carbon Black Covered Hopper - DCBX

ScaleTrains.com is excited to be the first manufacturer to offer HO scale plastic models of contemporary Thrall 5750 cubic foot and Thrall 4727 cubic foot carbon black covered hoppers.  Two distinctly different versions of the 5750cf represent the 1970s to present and 1980s to present while the 4727cf is appropriate for the 1990s to today.

Found throughout North America, these unique freight cars are commonly found in large groups near major carbon black producers or users.  They can also be seen singularly or in small blocks of cars in mixed freight trains.  All three models were painstakingly researched from field documentation, photographs, reference books, and builder drawings. 

In 1992, Thrall introduced the 4727 cubic foot carbon black covered hopper.  In contrast with the boxy 5750 cubic foot design, this newer design more closely resembles traditional covered hoppers.  Similar in appearance to “high-hip” grain hoppers, these cars featured three bays, external posts, and “open” ends with visible slope sheets.   Common with their larger 5750cf cousins, these 70-ton cars feature “butterfly” outlets, multiple round loading hatches on the car roof (22 or 28 depending upon customer specifications), and sampling spigots mounted into small indents in the car sides.


A byproduct of the petrochemical refining industry, carbon black is a fine, powdery substance with a consistency sometimes described as being akin to soot.  Deep black in color, one of its major consumers is the automotive industry, where it’s used as filler in tires, belts, and other rubber products.  It also sees usage as a pigment in inks, paints, and plastic products, all of which make it a popular commodity with a variety of industries.  Hauling it, however, can be challenging thanks to its physical properties.  Covered hoppers are typically used to handle carbon black, with unique designs dating back to the 1920s. 

Road Number Specific ScaleTrains
  • From series DCBX 2001-2100, Thrall Car Job 903, built June-July 1996
  • 28 roof hatches
  • With added FRA-224 reflective stripes
Additional Features
  • All-new model
  • Four (4) different road numbers
  • Separately-applied sampling spigot
  • Separate rooftop vent “snorkel” pipe
  • Per prototype: 22 or 28 roof hatches
  • Finely detailed end posts and bracing
  • Photoetched stainless steel running boards and end platforms
  • Separately-applied end ladders
  • Finely-detailed underbody brake detail
  • Durable die-cast metal semi-scale Type E knuckle couplers
  • All-new Barber S-2 70-ton Trucks with rotating bearing caps, separate brake beams, and side bearing detail
  • 33” machined metal wheels
  • Minimum radius: 18”
  • Recommended radius: 22" 
All Rivet Counter Freight Cars Feature
  • Fully assembled
  • Color matched to Tru-Color Paint colors whenever possible
  • Printing and lettering legible even under magnification
  • Accurately profiled .110" wide wheel tread
  • Separately-applied metal grab irons
  • Coupler cut levers
  • Trainline hoses
  • Intricate brake plumbing
  • Weighted to Industry standards
  • Operates on Code 70, 83 and 100 rail
  • Packaging safely stores model 
Check out the Features Video:


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