Introduction

ScaleTrains HO Scale 31984 Rivet GATC 4180 Airslide Covered Hopper Illinois Central IC 59237

In 1963, GATC introduced the 4180 Cubic Foot Airslide covered hopper to their product line. Designed for shippers of such commodities as flour, starch, and sugar, these two-bay cars featured ten round loading hatches and four outlets. As with their other Airslide designs, it featured their patented Airslide unloading system which uses pressurized air to aerate the special fabric lining of the bays, effectively fluidizing the commodity and allowing it to flow more easily during unloading.

As with most any locomotive or rolling stock, the 4180cf Airslides underwent production changes over their production span. These changes were typically the result of improvements in fabrication, changes in railroad regulations, and/or changes in vendor components. This evolution is unofficially termed as phases by railroad enthusiasts. Per noted freight car historian Eric Neubauers definitive work on Airslide covered hoppers, 4180cf Airslide production broke down as follows:

• Phase HAT These Airslides featured full-height ladders at the side corners, hat-section side posts, high handbrakes, and Z section horizontal end braces, and wire-loop roping eyes. Built from 2/63 5/64.
• Phase TZH This evolution to the 4180cf design was similar to the previous HAT cars, but with a change to the truck centers, and a change to bolster jacking plates with integral roping eyes, in place of the wire loops. Built from 6/65 3/66.
• Phase TZL Outwardly identical to Phase TZH cars, these Airslides featured low-mounted handbrakes and half-height ladder grabs at the side corners, to comply with changes to freight car appliance regulations. Built from 9/66 1/69.
• Phase TZC This phase introduced notable changes to the 4180cf design, mainly the change of the side posts (except those at the bolsters) to a fabricated square-column style. The posts at the bolsters remained hat-section, as on previous production. This phase was produced during the first half of 1966.
• Phase HZ This phase progression from Phase TZC saw the posts at the bolsters change from hat-section posts, to I beam style posts. Produced for a brief period from 8/69 to 1/70.
• Phase HC The final 4180cf Airslide variant, this version featured square tube-style horizontal end braces, in place of the Z style of previous versions. They were produced from 10/70 until 10/80.

Production of the 4180cf Airslide would continue until 1980 when it was superseded by the larger 4566cf Airslide design (also available from ScaleTrains.com). Most continued in service into the 2000s. Age and obsolescence thanks to larger Airslides and newer Pressure-Differential designs have slowly thinned their ranks. BNSF has repurposed several 4180cf Airslide Covered Hoppers for buffer car service so they continue in operation today.

Additional Features

• Correct phase details
• Phase TZL
• Hat-section side posts
• Half-height ladder grab irons at the side corners
• Z-section horizontal end braces
• Low-mounted hand brake
• Body mounted brakes
• Roping eyes integral to the bolster plates
• Phase TZC
• 4 square column style side posts except at the bolsters
• Hat-section posts at the bolsters
• Half-height ladder grab irons at the side corners
• Z-section horizontal end braces
• Low-mounted hand brake
• Body mounted brakes
• Roping eyes integral to the bolster plates
• Phase HZ
• 4 square column style side posts
• Half-height ladder grab irons at the side corners
• Z-section horizontal end braces
• Low-mounted hand brake
• Body mounted brakes
• Roping eyes integral to the bolster plates
• Phase HC
• 4 square column style side posts
• Half-height ladder grab irons at the side corners
• Square tube-style horizontal end braces
• Low-mounted hand brake
• Body mounted brakes
• Roping eyes integral to the bolster plates
• Apex (slotted) or Morton (round-hole) walkway and end crossover platforms
• Photo-etched stainless-steel see-through walkway with metal grab irons
• Gravity or gravity-pneumatic outlet gates
• Complete underbody brake systems including wireform brake plumbing and brake rods with separately applied air reservoir, control valve, retainer valve details and brake levers
• Durable die-cast metal semi-scale standard Type E couplers
• Highly-detailed Barber S-2 100-ton trucks with finely rendered raised foundry data, rotating bearing caps, side bearing detail, and truck-mounted brake beams
• 36 machined metal wheels
• Minimum radius: 18
• Recommended radius: 22

All Rivet Counter Freight Cars Feature

• Fully assembled
• Multiple road numbers
• Factory-applied metal grab irons, coupler cut levers, and trainline hoses
• Intricate brake plumbing
• Photo-etched stainless-steel see-through end crossover platforms
• Printing and lettering legible even under magnification
• Color matched to existing Tru-Color Paint colors whenever possible
• Accurately profiled .110 wheels
• Weighted to Industry standards for reliable operation
• Operates on Code 70, 83 and 100 rail
• Packaging safely stores model

NOTE: Image shown my vary from road number offered.