#555 A.S.F.® 100-ton Roller Bearing Self Centering Trucks with 36" Smooth Back Wheels - HO ScaleMetal Fully Sprung Equalized Trucks Mounts with Kadee Self Centering bushing on a flat surface with a #2 or 2-56 screw or without the Kadee Self Centering bushing on a 0.140" or smaller molded on truck post secured with the original screw. The A.S.F.® 100-ton Roller Bearing Truck is from the modern diesel era. It has standard 36 inch wheels and a longer wheel base than the 50 or 70 ton roller bearing trucks. Our model is a faithful reproduction of the American Steel Foundries® Ride Control® truck. This truck is currently in use under a variety of rolling stock in North America. The Bettendorf Double Truss Truck was introduced in the 1930's by U.S. railroads and was allowed to be used in interchange service through 1993. The Kadee® #500, #502 & #550 represent 50- ton trucks for 100,000 pound cars. HO-Scale Metal Fully Sprung Trucks Features: Self Centering Action - Trucks self align themselves parallel with the car for easier placement on track. Code 110 (.110) #523 36" Smooth Back Wheels #442 Brake Pads - Wide Bolster Accurate Markings Incredible Detail True to Prototype Non-Magnetic Metal Wheels Highly Flexible Sprung Trucks Metal Sideframes & Fully Sprung Self Centering Bolster Smooth tracking Free Rolling Contoured Insulated Plastic Axles RP-25 Free Rolling Wheels #638 HO Scale Truck Springs Patent number 5,768,999 Package Includes: (2) Each #555 A.S.F.® 100-ton Roller Bearing Self Centering Trucks (assembled) (2) #442 Brake Pads - Wide Bolster (2) Each Self Centering Bushing (2) Each #2 Screw The term Code 110 and Code 88 relates to the width of the wheels and has no relationship to track code. Code 110 wheels are .110" wide and Code 88 are .088" wide. Code 110 wheels are the common (or "Standard") width wheels and Code 88 are what is called "Semi-Scale" and are used when the modeler wants a more prototypical looking wheel width. Actual HO-Scale prototypical wheel width would be around .067" wide and although they will run OK on the average track they will not go through common turnouts and crossings. Code 88 (.088") is just about the minimum width of wheel that will run on most standard or common track if gauged correctly. It really is a matter of appearances because there's very little operational differences between running Code 110 or Code 88 wheels. Code 88 wheels look really good and are most noticeable on open frame cars like hoppers and tank cars. However, they also look great on boxcars, gondolas, and reefers but not quite as noticeable. As mentioned above track code and wheel code have no relationship meaning Code 110 and Code 88 will run on most any code of track. Track code is simply the measured height of the rail, code 100 is .100" tall, code 83 is .083" tall, code 70 is .070" tall, and so on.
