Athearn 18789 HO Scale PS 4740 Covered Hopper Missouri Kansas Texas MKT 3 Pack Sonicwake The stock inner bearings are

The stock inner bearings are a mere 20x27x4mm while the oversized bearings we use are gigantic 20x32x7mm bearings

CHASSIS MOUNTED SERVO SYSTEM WITH PANHARD BAR

fiber-composite monocoque chassis

Note: This is not a direct replacement to the Mamba XLX

and centerline telescopic driveshafts that can’t be lost during heavy impacts

Athearn 18789 HO Scale PS 4740 Covered Hopper Missouri Kansas Texas MKT 3 Pack Sonicwake The stock inner bearings areAthearn 18789 HO Scale PS 4740 Covered Hopper Missouri Kansas Texas MKT 3 Pack Pullman Standard dominated the covered hopper car market beginning in the 1950s, thanks to the design success of their PS 2 series of covered hoppers. In 1967 the 4740 cubic foot capacity covered hoppers were the successor to the earlier 4427 cubic foot design. PS responded to increasing demand for efficiency by the railroads and shippers alike, carrying more per trip then