#504 HO Standard A.S.F.® Ride Control® Truck 1 Pair

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.

Truck Features
? Code .110 33" smooth back wheels
? Accurate markings
? Incredible detail True to prototype
? Non-magnetic Metal wheels
? Highly Flexable sprung trucks
? Metal SideFrames & Fully Sprung Bolster
? Smooth tracking Free rolling Contoured Insulated Axles
? RP-25 Free rolling wheels
? Patent numbers 5,832,837 & 5,768,99