Kadee / A.S.F.® Ride Control® 50-Ton Self-Centering HGC Trucks for HO scale model trains. These trucks come with Code 110 (.110 wide) 33 Ribbed-Back RP-25 wheels and are mounted with a #2 or 2-56 screw. The A.S.F.® A-3 Ride Control® 50-ton freight truck, introduced in the 1940s, is a forerunner of modern freight trucks. It features longer spring travel, no spring planks, and constant friction control to dampen lateral roll, allowing for higher train speeds with less derailment risk. ASF® sold over 140,000 sets by 1949. Ideal for modeling the transition era up to 1994. Truck features include standard ribbed back wheels, high gravity compound weighing similar to metal trucks, self-centering, superior rolling ability, brake pads, accurate markings, incredible detail, non-magnetic metal wheels, highly flexible fully equalized design, smooth tracking with free rolling contoured insulated axles, and RP-25 free rolling wheels.

Using these trucks is easy. First, make sure you have a #2 or 2 - 56 screw handy to mount the trucks to your model train. Simply attach them securely to the appropriate part of your HO scale train. When using your model train, these trucks' self - centering feature will help it run smoothly on the tracks. Remember, since these trucks have brake pads, you can control the speed of your train more effectively. For maintenance, keep the axles clean. You can use a soft, dry cloth to wipe off any dust or debris. Also, check the markings regularly to ensure they stay accurate. Avoid exposing the trucks to extreme temperatures or moisture, as this could damage the high - gravity compound and other components. If you notice any issues with the rolling ability or the self - centering function, inspect the axles and the friction control parts for any signs of wear or damage.