KADEE 563 HO Scale, ASF A-3 Ride Control 50-Ton Self Centering Trucks with 33" Ribbed Back Wheels - HGC

#563 A.S.F.® A-3 Ride Control® 50-Ton Self Centering Trucks with 33" Ribbed Back Wheels - HO ScaleHGC Two Piece Fully Equalized TrucksThe Self-Centering Action trucks self align themselves parallel with the car for easier placement on track.Mounts with a #2 or 2-56 screw.Introduced in the 1940’s - Used in interchange service through 1994.The A. S. F.® A-3 Ride Control® 50-ton freight truck was introduced in the 1940's and is one of the forerunners of modern freight trucks. Features embodied into this design include a longer spring travel, no spring planks and constant friction control using friction castings in the bolster to dampen excessive lateral roll of the car. These design features allowed for a higher train speed with less danger of derailment than previous designs. ASF® sold over 140,000 sets by 1949. This truck is excellent for modeling the transition era up to 1994 when friction bearings were no longer allowed in interchange service.HGC or High Gravity Compound, weighs nearl